merge with upstream and resolve conflicts

67 files changed, 1607 insertions, 1194 deletions

diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index e9adcf34c7..5b836fefc3 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -41,6 +41,7 @@
 #include "src/core/support/string.h"
 #include "src/core/transport/chttp2_transport.h"
 
+#include <grpc/support/alloc.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/thd.h>
 
@@ -89,6 +90,8 @@ void grpc_run_bad_client_test(grpc_bad_client_server_side_validator validator,
   /* Add a debug log */
   gpr_log(GPR_INFO, "TEST: %s", hex);
 
+  gpr_free(hex);
+
   /* Init grpc */
   grpc_init();
 
diff --git a/test/core/bad_client/gen_build_json.py b/test/core/bad_client/gen_build_json.py
index a6fa266bec..33bf65ac04 100755
--- a/test/core/bad_client/gen_build_json.py
+++ b/test/core/bad_client/gen_build_json.py
@@ -54,6 +54,15 @@ def main():
             'language': 'c',
             'src': [
               'test/core/bad_client/bad_client.c'
+            ],
+            'headers': [
+              'test/core/bad_client/bad_client.h'
+            ],
+            'deps': [
+              'grpc_test_util_unsecure',
+              'grpc_unsecure',
+              'gpr_test_util',
+              'gpr'
             ]
           }],
       'targets': [
diff --git a/test/core/end2end/cq_verifier.c b/test/core/end2end/cq_verifier.c
index 8a30e012e9..33f7c02b61 100644
--- a/test/core/end2end/cq_verifier.c
+++ b/test/core/end2end/cq_verifier.c
@@ -167,6 +167,9 @@ static void verify_matches(expectation *e, grpc_event *ev) {
 static void expectation_to_strvec(gpr_strvec *buf, expectation *e) {
   char *tmp;
 
+  gpr_asprintf(&tmp, "%p ", e->tag);
+  gpr_strvec_add(buf, tmp);
+
   switch (e->type) {
     case GRPC_OP_COMPLETE:
       gpr_asprintf(&tmp, "GRPC_OP_COMPLETE result=%d", e->success);
diff --git a/test/core/end2end/dualstack_socket_test.c b/test/core/end2end/dualstack_socket_test.c
index 06cbba295e..7d3568c22e 100644
--- a/test/core/end2end/dualstack_socket_test.c
+++ b/test/core/end2end/dualstack_socket_test.c
@@ -62,12 +62,10 @@ void test_connect(const char *server_host, const char *client_host, int port,
   char *server_hostport;
   grpc_channel *client;
   grpc_server *server;
-  grpc_completion_queue *client_cq;
-  grpc_completion_queue *server_cq;
+  grpc_completion_queue *cq;
   grpc_call *c;
   grpc_call *s;
-  cq_verifier *v_client;
-  cq_verifier *v_server;
+  cq_verifier *cqv;
   gpr_timespec deadline;
   int got_port;
   grpc_op ops[6];
@@ -93,9 +91,9 @@ void test_connect(const char *server_host, const char *client_host, int port,
   grpc_call_details_init(&call_details);
 
   /* Create server. */
-  server_cq = grpc_completion_queue_create();
+  cq = grpc_completion_queue_create();
   server = grpc_server_create(NULL);
-  grpc_server_register_completion_queue(server, server_cq);
+  grpc_server_register_completion_queue(server, cq);
   GPR_ASSERT((got_port = grpc_server_add_http2_port(server, server_hostport)) >
              0);
   if (port == 0) {
@@ -104,13 +102,11 @@ void test_connect(const char *server_host, const char *client_host, int port,
     GPR_ASSERT(port == got_port);
   }
   grpc_server_start(server);
-  v_server = cq_verifier_create(server_cq);
+  cqv = cq_verifier_create(cq);
 
   /* Create client. */
   gpr_join_host_port(&client_hostport, client_host, port);
-  client_cq = grpc_completion_queue_create();
   client = grpc_channel_create(client_hostport, NULL);
-  v_client = cq_verifier_create(client_cq);
 
   gpr_log(GPR_INFO, "Testing with server=%s client=%s (expecting %s)",
           server_hostport, client_hostport, expect_ok ? "success" : "failure");
@@ -128,7 +124,7 @@ void test_connect(const char *server_host, const char *client_host, int port,
   }
 
   /* Send a trivial request. */
-  c = grpc_channel_create_call(client, client_cq, "/foo", "foo.test.google.fr",
+  c = grpc_channel_create_call(client, cq, "/foo", "foo.test.google.fr",
                                deadline);
   GPR_ASSERT(c);
 
@@ -155,12 +151,11 @@ void test_connect(const char *server_host, const char *client_host, int port,
 
   if (expect_ok) {
     /* Check for a successful request. */
-    GPR_ASSERT(GRPC_CALL_OK ==
-               grpc_server_request_call(server, &s, &call_details,
-                                        &request_metadata_recv, server_cq,
-                                        server_cq, tag(101)));
-    cq_expect_completion(v_server, tag(101), 1);
-    cq_verify(v_server);
+    GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                   server, &s, &call_details,
+                                   &request_metadata_recv, cq, cq, tag(101)));
+    cq_expect_completion(cqv, tag(101), 1);
+    cq_verify(cqv);
 
     op = ops;
     op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -180,45 +175,41 @@ void test_connect(const char *server_host, const char *client_host, int port,
     GPR_ASSERT(GRPC_CALL_OK ==
                grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-    cq_expect_completion(v_server, tag(102), 1);
-    cq_verify(v_server);
-
-    cq_expect_completion(v_client, tag(1), 1);
-    cq_verify(v_client);
+    cq_expect_completion(cqv, tag(102), 1);
+    cq_expect_completion(cqv, tag(1), 1);
+    cq_verify(cqv);
 
     GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
     GPR_ASSERT(0 == strcmp(details, "xyz"));
     GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
     GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
-    GPR_ASSERT(was_cancelled == 0);
+    GPR_ASSERT(was_cancelled == 1);
 
     grpc_call_destroy(s);
   } else {
     /* Check for a failed connection. */
-    cq_expect_completion(v_client, tag(1), 1);
-    cq_verify(v_client);
+    cq_expect_completion(cqv, tag(1), 1);
+    cq_verify(cqv);
 
     GPR_ASSERT(status == GRPC_STATUS_DEADLINE_EXCEEDED);
   }
 
   grpc_call_destroy(c);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   /* Destroy client. */
   grpc_channel_destroy(client);
-  grpc_completion_queue_shutdown(client_cq);
-  drain_cq(client_cq);
-  grpc_completion_queue_destroy(client_cq);
 
   /* Destroy server. */
-  grpc_server_shutdown_and_notify(server, server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(server, cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(server);
-  grpc_completion_queue_shutdown(server_cq);
-  drain_cq(server_cq);
-  grpc_completion_queue_destroy(server_cq);
+  grpc_completion_queue_shutdown(cq);
+  drain_cq(cq);
+  grpc_completion_queue_destroy(cq);
 
   grpc_call_details_destroy(&call_details);
   gpr_free(details);
diff --git a/test/core/end2end/end2end_tests.h b/test/core/end2end/end2end_tests.h
index a61c725aa2..a18c702951 100644
--- a/test/core/end2end/end2end_tests.h
+++ b/test/core/end2end/end2end_tests.h
@@ -44,8 +44,7 @@ typedef struct grpc_end2end_test_config grpc_end2end_test_config;
 #define FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS 4
 
 struct grpc_end2end_test_fixture {
-  grpc_completion_queue *server_cq;
-  grpc_completion_queue *client_cq;
+  grpc_completion_queue *cq;
   grpc_server *server;
   grpc_channel *client;
   void *fixture_data;
@@ -65,4 +64,4 @@ struct grpc_end2end_test_config {
 
 void grpc_end2end_tests(grpc_end2end_test_config config);
 
-#endif  /* GRPC_TEST_CORE_END2END_END2END_TESTS_H */
+#endif /* GRPC_TEST_CORE_END2END_END2END_TESTS_H */
diff --git a/test/core/end2end/fixtures/chttp2_fake_security.c b/test/core/end2end/fixtures/chttp2_fake_security.c
index 5323e29e82..f879b43f79 100644
--- a/test/core/end2end/fixtures/chttp2_fake_security.c
+++ b/test/core/end2end/fixtures/chttp2_fake_security.c
@@ -60,8 +60,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_secure_fullstack(
   gpr_join_host_port(&ffd->localaddr, "localhost", port);
 
   f.fixture_data = ffd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   return f;
 }
@@ -83,8 +82,9 @@ static void chttp2_init_server_secure_fullstack(
     grpc_server_destroy(f->server);
   }
   f->server = grpc_server_create(server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
-  GPR_ASSERT(grpc_server_add_secure_http2_port(f->server, ffd->localaddr, server_creds));
+  grpc_server_register_completion_queue(f->server, f->cq);
+  GPR_ASSERT(grpc_server_add_secure_http2_port(f->server, ffd->localaddr,
+                                               server_creds));
   grpc_server_credentials_release(server_creds);
   grpc_server_start(f->server);
 }
diff --git a/test/core/end2end/fixtures/chttp2_fullstack.c b/test/core/end2end/fixtures/chttp2_fullstack.c
index f92b40efeb..b83e227a89 100644
--- a/test/core/end2end/fixtures/chttp2_fullstack.c
+++ b/test/core/end2end/fixtures/chttp2_fullstack.c
@@ -65,8 +65,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
   gpr_join_host_port(&ffd->localaddr, "localhost", port);
 
   f.fixture_data = ffd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   return f;
 }
@@ -84,7 +83,7 @@ void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
     grpc_server_destroy(f->server);
   }
   f->server = grpc_server_create(server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_register_completion_queue(f->server, f->cq);
   GPR_ASSERT(grpc_server_add_http2_port(f->server, ffd->localaddr));
   grpc_server_start(f->server);
 }
diff --git a/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c b/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c
index 02aa575065..94b54253e4 100644
--- a/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c
+++ b/test/core/end2end/fixtures/chttp2_fullstack_uds_posix.c
@@ -71,8 +71,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
                unique++);
 
   f.fixture_data = ffd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   return f;
 }
@@ -90,7 +89,7 @@ void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
     grpc_server_destroy(f->server);
   }
   f->server = grpc_server_create(server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_register_completion_queue(f->server, f->cq);
   GPR_ASSERT(grpc_server_add_http2_port(f->server, ffd->localaddr));
   grpc_server_start(f->server);
 }
diff --git a/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c b/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c
index f92b40efeb..00322d4011 100644
--- a/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c
+++ b/test/core/end2end/fixtures/chttp2_fullstack_with_poll.c
@@ -65,8 +65,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_fullstack(
   gpr_join_host_port(&ffd->localaddr, "localhost", port);
 
   f.fixture_data = ffd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   return f;
 }
@@ -84,7 +83,7 @@ void chttp2_init_server_fullstack(grpc_end2end_test_fixture *f,
     grpc_server_destroy(f->server);
   }
   f->server = grpc_server_create(server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_register_completion_queue(f->server, f->cq);
   GPR_ASSERT(grpc_server_add_http2_port(f->server, ffd->localaddr));
   grpc_server_start(f->server);
 }
@@ -105,6 +104,8 @@ static grpc_end2end_test_config configs[] = {
 int main(int argc, char **argv) {
   size_t i;
 
+  grpc_platform_become_multipoller = grpc_poll_become_multipoller;
+
   grpc_test_init(argc, argv);
   grpc_init();
 
diff --git a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c
index 6d1b7b5ff0..237d072702 100644
--- a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c
+++ b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c
@@ -63,8 +63,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_secure_fullstack(
   gpr_join_host_port(&ffd->localaddr, "localhost", port);
 
   f.fixture_data = ffd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   return f;
 }
@@ -86,8 +85,9 @@ static void chttp2_init_server_secure_fullstack(
     grpc_server_destroy(f->server);
   }
   f->server = grpc_server_create(server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
-  GPR_ASSERT(grpc_server_add_secure_http2_port(f->server, ffd->localaddr, server_creds));
+  grpc_server_register_completion_queue(f->server, f->cq);
+  GPR_ASSERT(grpc_server_add_secure_http2_port(f->server, ffd->localaddr,
+                                               server_creds));
   grpc_server_credentials_release(server_creds);
   grpc_server_start(f->server);
 }
diff --git a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_poll.c b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_poll.c
index a5865d37c8..ff5642642d 100644
--- a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_poll.c
+++ b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack_with_poll.c
@@ -63,8 +63,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_secure_fullstack(
   gpr_join_host_port(&ffd->localaddr, "localhost", port);
 
   f.fixture_data = ffd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   return f;
 }
@@ -86,7 +85,7 @@ static void chttp2_init_server_secure_fullstack(
     grpc_server_destroy(f->server);
   }
   f->server = grpc_server_create(server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_register_completion_queue(f->server, f->cq);
   GPR_ASSERT(grpc_server_add_secure_http2_port(f->server, ffd->localaddr,
                                                server_creds));
   grpc_server_credentials_release(server_creds);
diff --git a/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c b/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c
index 4a15d502a5..d4bb5d3ef5 100644
--- a/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c
+++ b/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c
@@ -61,8 +61,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_secure_fullstack(
   gpr_join_host_port(&ffd->localaddr, "localhost", port);
 
   f.fixture_data = ffd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   return f;
 }
@@ -84,8 +83,9 @@ static void chttp2_init_server_secure_fullstack(
     grpc_server_destroy(f->server);
   }
   f->server = grpc_server_create(server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
-  GPR_ASSERT(grpc_server_add_secure_http2_port(f->server, ffd->localaddr, server_creds));
+  grpc_server_register_completion_queue(f->server, f->cq);
+  GPR_ASSERT(grpc_server_add_secure_http2_port(f->server, ffd->localaddr,
+                                               server_creds));
   grpc_server_credentials_release(server_creds);
   grpc_server_start(f->server);
 }
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair.c b/test/core/end2end/fixtures/chttp2_socket_pair.c
index 48c121c7c4..d84405224b 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair.c
@@ -95,8 +95,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
   grpc_end2end_test_fixture f;
   memset(&f, 0, sizeof(f));
   f.fixture_data = sfd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   *sfd = grpc_iomgr_create_endpoint_pair("fixture", 65536);
 
@@ -119,7 +118,7 @@ static void chttp2_init_server_socketpair(grpc_end2end_test_fixture *f,
   grpc_endpoint_pair *sfd = f->fixture_data;
   GPR_ASSERT(!f->server);
   f->server = grpc_server_create_from_filters(NULL, 0, server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_register_completion_queue(f->server, f->cq);
   grpc_server_start(f->server);
   grpc_create_chttp2_transport(server_setup_transport, f, server_args,
                                sfd->server, NULL, 0, grpc_mdctx_create(), 0);
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c b/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
index 1d2e6f51c1..ac8b5eb86d 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair_one_byte_at_a_time.c
@@ -95,8 +95,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
   grpc_end2end_test_fixture f;
   memset(&f, 0, sizeof(f));
   f.fixture_data = sfd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   *sfd = grpc_iomgr_create_endpoint_pair("fixture", 1);
 
@@ -119,7 +118,7 @@ static void chttp2_init_server_socketpair(grpc_end2end_test_fixture *f,
   grpc_endpoint_pair *sfd = f->fixture_data;
   GPR_ASSERT(!f->server);
   f->server = grpc_server_create_from_filters(NULL, 0, server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_register_completion_queue(f->server, f->cq);
   grpc_server_start(f->server);
   grpc_create_chttp2_transport(server_setup_transport, f, server_args,
                                sfd->server, NULL, 0, grpc_mdctx_create(), 0);
diff --git a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
index 0834987fbe..e160812fa3 100644
--- a/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
+++ b/test/core/end2end/fixtures/chttp2_socket_pair_with_grpc_trace.c
@@ -96,8 +96,7 @@ static grpc_end2end_test_fixture chttp2_create_fixture_socketpair(
   grpc_end2end_test_fixture f;
   memset(&f, 0, sizeof(f));
   f.fixture_data = sfd;
-  f.client_cq = grpc_completion_queue_create();
-  f.server_cq = grpc_completion_queue_create();
+  f.cq = grpc_completion_queue_create();
 
   *sfd = grpc_iomgr_create_endpoint_pair("fixture", 65536);
 
@@ -120,7 +119,7 @@ static void chttp2_init_server_socketpair(grpc_end2end_test_fixture *f,
   grpc_endpoint_pair *sfd = f->fixture_data;
   GPR_ASSERT(!f->server);
   f->server = grpc_server_create_from_filters(NULL, 0, server_args);
-  grpc_server_register_completion_queue(f->server, f->server_cq);
+  grpc_server_register_completion_queue(f->server, f->cq);
   grpc_server_start(f->server);
   grpc_create_chttp2_transport(server_setup_transport, f, server_args,
                                sfd->server, NULL, 0, grpc_mdctx_create(), 0);
diff --git a/test/core/end2end/gen_build_json.py b/test/core/end2end/gen_build_json.py
index 66447527e1..f1c7e85e08 100755
--- a/test/core/end2end/gen_build_json.py
+++ b/test/core/end2end/gen_build_json.py
@@ -60,7 +60,7 @@ default_test_options = TestOptions(False, False)
 # maps test names to options
 END2END_TESTS = {
     'bad_hostname': default_test_options,
-    'cancel_after_accept': TestOptions(flaky=True, secure=False),
+    'cancel_after_accept': default_test_options,
     'cancel_after_accept_and_writes_closed': default_test_options,
     'cancel_after_invoke': default_test_options,
     'cancel_before_invoke': default_test_options,
@@ -71,7 +71,7 @@ END2END_TESTS = {
     'early_server_shutdown_finishes_tags': default_test_options,
     'empty_batch': default_test_options,
     'graceful_server_shutdown': default_test_options,
-    'invoke_large_request': TestOptions(flaky=True, secure=False),
+    'invoke_large_request': default_test_options,
     'max_concurrent_streams': default_test_options,
     'max_message_length': default_test_options,
     'no_op': default_test_options,
@@ -93,6 +93,19 @@ END2END_TESTS = {
 
 
 def main():
+  sec_deps = [
+    'end2end_certs',
+    'grpc_test_util',
+    'grpc',
+    'gpr_test_util',
+    'gpr'
+  ]
+  unsec_deps = [
+    'grpc_test_util_unsecure',
+    'grpc_unsecure',
+    'gpr_test_util',
+    'gpr'
+  ]
   json = {
       '#': 'generated with test/end2end/gen_build_json.py',
       'libs': [
@@ -103,6 +116,8 @@ def main():
               'secure': 'check' if END2END_FIXTURES[f].secure else 'no',
               'src': ['test/core/end2end/fixtures/%s.c' % f],
               'platforms': [ 'posix' ] if f.endswith('_posix') else END2END_FIXTURES[f].platforms,
+              'deps': sec_deps if END2END_FIXTURES[f].secure else unsec_deps,
+              'headers': ['test/core/end2end/end2end_tests.h'],
           }
           for f in sorted(END2END_FIXTURES.keys())] + [
           {
@@ -111,7 +126,9 @@ def main():
               'language': 'c',
               'secure': 'check' if END2END_TESTS[t].secure else 'no',
               'src': ['test/core/end2end/tests/%s.c' % t],
-              'headers': ['test/core/end2end/tests/cancel_test_helpers.h']
+              'headers': ['test/core/end2end/tests/cancel_test_helpers.h',
+                          'test/core/end2end/end2end_tests.h'],
+              'deps': sec_deps if END2END_TESTS[t].secure else unsec_deps
           }
           for t in sorted(END2END_TESTS.keys())] + [
           {
@@ -135,13 +152,7 @@ def main():
               'platforms': END2END_FIXTURES[f].platforms,
               'deps': [
                   'end2end_fixture_%s' % f,
-                  'end2end_test_%s' % t,
-                  'end2end_certs',
-                  'grpc_test_util',
-                  'grpc',
-                  'gpr_test_util',
-                  'gpr'
-              ]
+                  'end2end_test_%s' % t] + sec_deps
           }
       for f in sorted(END2END_FIXTURES.keys())
       for t in sorted(END2END_TESTS.keys())] + [
@@ -155,12 +166,7 @@ def main():
               'platforms': END2END_FIXTURES[f].platforms,
               'deps': [
                   'end2end_fixture_%s' % f,
-                  'end2end_test_%s' % t,
-                  'grpc_test_util_unsecure',
-                  'grpc_unsecure',
-                  'gpr_test_util',
-                  'gpr'
-              ]
+                  'end2end_test_%s' % t] + unsec_deps
           }
       for f in sorted(END2END_FIXTURES.keys()) if not END2END_FIXTURES[f].secure
       for t in sorted(END2END_TESTS.keys()) if not END2END_TESTS[t].secure]}
diff --git a/test/core/end2end/multiple_server_queues_test.c b/test/core/end2end/multiple_server_queues_test.c
new file mode 100644
index 0000000000..2306015eed
--- /dev/null
+++ b/test/core/end2end/multiple_server_queues_test.c
@@ -0,0 +1,62 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/grpc.h>
+#include "test/core/util/test_config.h"
+
+int main(int argc, char **argv) {
+  grpc_completion_queue *cq1;
+  grpc_completion_queue *cq2;
+  grpc_server *server;
+
+  grpc_test_init(argc, argv);
+  grpc_init();
+  cq1 = grpc_completion_queue_create();
+  cq2 = grpc_completion_queue_create();
+  server = grpc_server_create(NULL);
+  grpc_server_register_completion_queue(server, cq1);
+  grpc_server_add_http2_port(server, "[::]:0");
+  grpc_server_register_completion_queue(server, cq2);
+  grpc_server_start(server);
+  grpc_server_shutdown_and_notify(server, cq2, NULL);
+  grpc_completion_queue_next(cq2, gpr_inf_future);  /* cue queue hang */
+  grpc_completion_queue_shutdown(cq1);
+  grpc_completion_queue_shutdown(cq2);
+  grpc_completion_queue_next(cq1, gpr_inf_future);
+  grpc_completion_queue_next(cq2, gpr_inf_future);
+  grpc_server_destroy(server);
+  grpc_completion_queue_destroy(cq1);
+  grpc_completion_queue_destroy(cq2);
+  grpc_shutdown();
+  return 0;
+}
diff --git a/test/core/end2end/tests/bad_hostname.c b/test/core/end2end/tests/bad_hostname.c
index 809c5bb7d4..2509ea06a0 100644
--- a/test/core/end2end/tests/bad_hostname.c
+++ b/test/core/end2end/tests/bad_hostname.c
@@ -76,8 +76,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -92,18 +94,15 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call *c;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -114,8 +113,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   char *details = NULL;
   size_t details_capacity = 0;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "slartibartfast.local", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "slartibartfast.local",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -144,8 +143,8 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNAUTHENTICATED);
 
@@ -157,7 +156,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
 
   grpc_call_destroy(c);
 
-  cq_verifier_destroy(v_client);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_invoke_simple_request(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/cancel_after_accept.c b/test/core/end2end/tests/cancel_after_accept.c
index cc5586bd1b..1cc6b2d147 100644
--- a/test/core/end2end/tests/cancel_after_accept.c
+++ b/test/core/end2end/tests/cancel_after_accept.c
@@ -75,8 +75,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -91,12 +93,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Cancel after accept, no payload */
@@ -106,10 +105,10 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
   grpc_op *op;
   grpc_call *c;
   grpc_call *s;
-  grpc_end2end_test_fixture f = begin_test(config, "cancel_after_accept", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "cancel_after_accept", NULL, NULL);
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_metadata_array initial_metadata_recv;
   grpc_metadata_array trailing_metadata_recv;
   grpc_metadata_array request_metadata_recv;
@@ -127,8 +126,8 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -162,12 +161,11 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(2)));
-  cq_expect_completion(v_server, tag(2), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(2)));
+  cq_expect_completion(cqv, tag(2), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_MESSAGE;
@@ -190,11 +188,9 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
 
   GPR_ASSERT(GRPC_CALL_OK == mode.initiate_cancel(c));
 
-  cq_expect_completion(v_server, tag(3), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(3), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == mode.expect_status);
   GPR_ASSERT(0 == strcmp(details, mode.expect_details));
@@ -214,8 +210,7 @@ static void test_cancel_after_accept(grpc_end2end_test_config config,
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/cancel_after_accept_and_writes_closed.c b/test/core/end2end/tests/cancel_after_accept_and_writes_closed.c
index 9a2fcf68a4..015d437543 100644
--- a/test/core/end2end/tests/cancel_after_accept_and_writes_closed.c
+++ b/test/core/end2end/tests/cancel_after_accept_and_writes_closed.c
@@ -75,8 +75,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -91,12 +93,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Cancel after accept with a writes closed, no payload */
@@ -106,10 +105,10 @@ static void test_cancel_after_accept_and_writes_closed(
   grpc_op *op;
   grpc_call *c;
   grpc_call *s;
-  grpc_end2end_test_fixture f = begin_test(config, "test_cancel_after_accept_and_writes_closed", NULL, NULL);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_cancel_after_accept_and_writes_closed", NULL, NULL);
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_metadata_array initial_metadata_recv;
   grpc_metadata_array trailing_metadata_recv;
   grpc_metadata_array request_metadata_recv;
@@ -127,8 +126,8 @@ static void test_cancel_after_accept_and_writes_closed(
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -165,12 +164,11 @@ static void test_cancel_after_accept_and_writes_closed(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(2)));
-  cq_expect_completion(v_server, tag(2), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(2)));
+  cq_expect_completion(cqv, tag(2), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_MESSAGE;
@@ -193,11 +191,9 @@ static void test_cancel_after_accept_and_writes_closed(
 
   GPR_ASSERT(GRPC_CALL_OK == mode.initiate_cancel(c));
 
-  cq_expect_completion(v_server, tag(3), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(3), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == mode.expect_status);
   GPR_ASSERT(0 == strcmp(details, mode.expect_details));
@@ -217,8 +213,7 @@ static void test_cancel_after_accept_and_writes_closed(
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/cancel_after_invoke.c b/test/core/end2end/tests/cancel_after_invoke.c
index 9b3ad280cb..414ec706ce 100644
--- a/test/core/end2end/tests/cancel_after_invoke.c
+++ b/test/core/end2end/tests/cancel_after_invoke.c
@@ -76,8 +76,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -92,12 +94,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Cancel after invoke, no payload */
@@ -109,7 +108,7 @@ static void test_cancel_after_invoke(grpc_end2end_test_config config,
   grpc_end2end_test_fixture f =
       begin_test(config, "test_cancel_after_invoke", mode, NULL, NULL);
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_metadata_array initial_metadata_recv;
   grpc_metadata_array trailing_metadata_recv;
   grpc_metadata_array request_metadata_recv;
@@ -122,8 +121,8 @@ static void test_cancel_after_invoke(grpc_end2end_test_config config,
   grpc_byte_buffer *request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -162,8 +161,8 @@ static void test_cancel_after_invoke(grpc_end2end_test_config config,
 
   GPR_ASSERT(GRPC_CALL_OK == mode.initiate_cancel(c));
 
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == mode.expect_status);
   GPR_ASSERT(0 == strcmp(details, mode.expect_details));
@@ -179,7 +178,7 @@ static void test_cancel_after_invoke(grpc_end2end_test_config config,
 
   grpc_call_destroy(c);
 
-  cq_verifier_destroy(v_client);
+  cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/cancel_before_invoke.c b/test/core/end2end/tests/cancel_before_invoke.c
index ca19c469f6..3cfe56eca2 100644
--- a/test/core/end2end/tests/cancel_before_invoke.c
+++ b/test/core/end2end/tests/cancel_before_invoke.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Cancel before invoke */
@@ -104,9 +103,10 @@ static void test_cancel_before_invoke(grpc_end2end_test_config config,
   grpc_op ops[6];
   grpc_op *op;
   grpc_call *c;
-  grpc_end2end_test_fixture f = begin_test(config, "cancel_before_invoke", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "cancel_before_invoke", NULL, NULL);
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_metadata_array initial_metadata_recv;
   grpc_metadata_array trailing_metadata_recv;
   grpc_metadata_array request_metadata_recv;
@@ -119,8 +119,8 @@ static void test_cancel_before_invoke(grpc_end2end_test_config config,
   grpc_byte_buffer *request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_cancel(c));
@@ -159,8 +159,8 @@ static void test_cancel_before_invoke(grpc_end2end_test_config config,
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, test_ops, tag(1)));
 
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_CANCELLED);
 
@@ -175,7 +175,7 @@ static void test_cancel_before_invoke(grpc_end2end_test_config config,
 
   grpc_call_destroy(c);
 
-  cq_verifier_destroy(v_client);
+  cq_verifier_destroy(cqv);
   end_test(&f);
   config.tear_down_data(&f);
 }
diff --git a/test/core/end2end/tests/cancel_in_a_vacuum.c b/test/core/end2end/tests/cancel_in_a_vacuum.c
index 5d7d762e5f..8bffc3f4d3 100644
--- a/test/core/end2end/tests/cancel_in_a_vacuum.c
+++ b/test/core/end2end/tests/cancel_in_a_vacuum.c
@@ -75,8 +75,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -91,24 +93,22 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Cancel and do nothing */
 static void test_cancel_in_a_vacuum(grpc_end2end_test_config config,
                                     cancellation_mode mode) {
   grpc_call *c;
-  grpc_end2end_test_fixture f = begin_test(config, "test_cancel_in_a_vacuum", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_cancel_in_a_vacuum", NULL, NULL);
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
+  cq_verifier *v_client = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   GPR_ASSERT(GRPC_CALL_OK == mode.initiate_cancel(c));
diff --git a/test/core/end2end/tests/census_simple_request.c b/test/core/end2end/tests/census_simple_request.c
index ac2574c804..b414755cd1 100644
--- a/test/core/end2end/tests/census_simple_request.c
+++ b/test/core/end2end/tests/census_simple_request.c
@@ -65,8 +65,10 @@ static void *tag(gpr_intptr t) { return (void *)t; }
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -88,20 +90,16 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void test_body(grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = n_seconds_time(5);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -113,7 +111,7 @@ static void test_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
@@ -143,12 +141,11 @@ static void test_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -167,17 +164,15 @@ static void test_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -188,8 +183,7 @@ static void test_body(grpc_end2end_test_fixture f) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_invoke_request_with_census(
diff --git a/test/core/end2end/tests/disappearing_server.c b/test/core/end2end/tests/disappearing_server.c
index cf9b79f117..9acd18902a 100644
--- a/test/core/end2end/tests/disappearing_server.c
+++ b/test/core/end2end/tests/disappearing_server.c
@@ -76,17 +76,13 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
-                                           cq_verifier *v_client,
-                                           cq_verifier *v_server) {
+                                           cq_verifier *cqv) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
@@ -101,7 +97,7 @@ static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f->client, f->client_cq, "/foo",
+  c = grpc_channel_create_call(f->client, f->cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
@@ -131,16 +127,16 @@ static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f->server, &s, &call_details,
-                                      &request_metadata_recv, f->server_cq,
-                                      f->server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(f->server, &s,
+                                                      &call_details,
+                                                      &request_metadata_recv,
+                                                      f->cq, f->cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   /* should be able to shut down the server early
      - and still complete the request */
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -159,18 +155,16 @@ static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_expect_completion(v_server, tag(1000), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_expect_completion(cqv, tag(1000), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -184,23 +178,21 @@ static void do_request_and_shutdown_server(grpc_end2end_test_fixture *f,
 
 static void disappearing_server_test(grpc_end2end_test_config config) {
   grpc_end2end_test_fixture f = config.create_fixture(NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
 
   gpr_log(GPR_INFO, "%s/%s", "disappearing_server_test", config.name);
 
   config.init_client(&f, NULL);
   config.init_server(&f, NULL);
 
-  do_request_and_shutdown_server(&f, v_client, v_server);
+  do_request_and_shutdown_server(&f, cqv);
 
   /* now destroy and recreate the server */
   config.init_server(&f, NULL);
 
-  do_request_and_shutdown_server(&f, v_client, v_server);
+  do_request_and_shutdown_server(&f, cqv);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/early_server_shutdown_finishes_inflight_calls.c b/test/core/end2end/tests/early_server_shutdown_finishes_inflight_calls.c
index 5826ababaa..adc59b4e94 100644
--- a/test/core/end2end/tests/early_server_shutdown_finishes_inflight_calls.c
+++ b/test/core/end2end/tests/early_server_shutdown_finishes_inflight_calls.c
@@ -81,12 +81,9 @@ static void shutdown_client(grpc_end2end_test_fixture *f) {
 static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void test_early_server_shutdown_finishes_inflight_calls(
@@ -94,9 +91,9 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  grpc_end2end_test_fixture f = begin_test(config, "test_early_server_shutdown_finishes_inflight_calls", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_early_server_shutdown_finishes_inflight_calls", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -108,8 +105,8 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -139,12 +136,11 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -154,18 +150,16 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
   /* shutdown and destroy the server */
-  grpc_server_shutdown_and_notify(f.server, f.server_cq, tag(1000));
+  grpc_server_shutdown_and_notify(f.server, f.cq, tag(1000));
   grpc_server_cancel_all_calls(f.server);
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_expect_completion(v_server, tag(1000), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(1000), 1);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   grpc_server_destroy(f.server);
 
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
-
   GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
@@ -180,8 +174,7 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/early_server_shutdown_finishes_tags.c b/test/core/end2end/tests/early_server_shutdown_finishes_tags.c
index 0c2cdb78f0..fc03cb01a8 100644
--- a/test/core/end2end/tests/early_server_shutdown_finishes_tags.c
+++ b/test/core/end2end/tests/early_server_shutdown_finishes_tags.c
@@ -81,18 +81,16 @@ static void shutdown_client(grpc_end2end_test_fixture *f) {
 static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void test_early_server_shutdown_finishes_tags(
     grpc_end2end_test_config config) {
-  grpc_end2end_test_fixture f = begin_test(config, "test_early_server_shutdown_finishes_tags", NULL, NULL);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_early_server_shutdown_finishes_tags", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_call *s = (void *)1;
   grpc_call_details call_details;
   grpc_metadata_array request_metadata_recv;
@@ -102,21 +100,20 @@ static void test_early_server_shutdown_finishes_tags(
 
   /* upon shutdown, the server should finish all requested calls indicating
      no new call */
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  grpc_server_shutdown_and_notify(f.server, f.server_cq, tag(1000));
-  cq_expect_completion(v_server, tag(101), 0);
-  cq_expect_completion(v_server, tag(1000), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  grpc_server_shutdown_and_notify(f.server, f.cq, tag(1000));
+  cq_expect_completion(cqv, tag(101), 0);
+  cq_expect_completion(cqv, tag(1000), 1);
+  cq_verify(cqv);
   GPR_ASSERT(s == NULL);
 
   grpc_server_destroy(f.server);
 
   end_test(&f);
   config.tear_down_data(&f);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
 void grpc_end2end_tests(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/empty_batch.c b/test/core/end2end/tests/empty_batch.c
index 79d1965981..db8458d3d9 100644
--- a/test/core/end2end/tests/empty_batch.c
+++ b/test/core/end2end/tests/empty_batch.c
@@ -76,8 +76,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -92,31 +94,28 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void empty_batch_body(grpc_end2end_test_fixture f) {
   grpc_call *c;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op *op = NULL;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, op, 0, tag(1)));
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   grpc_call_destroy(c);
 
-  cq_verifier_destroy(v_client);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_invoke_empty_body(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/graceful_server_shutdown.c b/test/core/end2end/tests/graceful_server_shutdown.c
index 6a5b4b15d3..8c1889add9 100644
--- a/test/core/end2end/tests/graceful_server_shutdown.c
+++ b/test/core/end2end/tests/graceful_server_shutdown.c
@@ -88,12 +88,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void test_early_server_shutdown_finishes_inflight_calls(
@@ -101,9 +98,9 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  grpc_end2end_test_fixture f = begin_test(config, "test_early_server_shutdown_finishes_inflight_calls", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_early_server_shutdown_finishes_inflight_calls", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -115,8 +112,8 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -146,16 +143,15 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   /* shutdown and destroy the server */
-  grpc_server_shutdown_and_notify(f.server, f.server_cq, tag(0xdead));
-  cq_verify_empty(v_server);
+  grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
+  cq_verify_empty(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -174,19 +170,17 @@ static void test_early_server_shutdown_finishes_inflight_calls(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_expect_completion(v_server, tag(0xdead), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(0xdead), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   grpc_call_destroy(s);
 
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
-
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -196,8 +190,7 @@ static void test_early_server_shutdown_finishes_inflight_calls(
 
   grpc_call_destroy(c);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/invoke_large_request.c b/test/core/end2end/tests/invoke_large_request.c
index 812bdfa3e7..744a9ada57 100644
--- a/test/core/end2end/tests/invoke_large_request.c
+++ b/test/core/end2end/tests/invoke_large_request.c
@@ -72,8 +72,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -88,22 +90,20 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static gpr_slice large_slice(void) {
   gpr_slice slice = gpr_slice_malloc(1000000);
-  memset(GPR_SLICE_START_PTR(slice), 0xab, GPR_SLICE_LENGTH(slice));
+  memset(GPR_SLICE_START_PTR(slice), 'x', GPR_SLICE_LENGTH(slice));
   return slice;
 }
 
 static void test_invoke_large_request(grpc_end2end_test_config config) {
-  grpc_end2end_test_fixture f = begin_test(config, "test_invoke_large_request", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_large_request", NULL, NULL);
 
   gpr_slice request_payload_slice = large_slice();
   gpr_slice response_payload_slice = large_slice();
@@ -114,8 +114,7 @@ static void test_invoke_large_request(grpc_end2end_test_config config) {
   grpc_byte_buffer *response_payload =
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   gpr_timespec deadline = n_seconds_time(30);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -129,8 +128,8 @@ static void test_invoke_large_request(grpc_end2end_test_config config) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -141,71 +140,78 @@ static void test_invoke_large_request(grpc_end2end_test_config config) {
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
   op++;
   op->op = GRPC_OP_SEND_MESSAGE;
   op->data.send_message = request_payload;
+  op->flags = 0;
   op++;
   op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
   op++;
   op->op = GRPC_OP_RECV_INITIAL_METADATA;
   op->data.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
   op++;
   op->op = GRPC_OP_RECV_MESSAGE;
   op->data.recv_message = &response_payload_recv;
+  op->flags = 0;
   op++;
   op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
   op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
   op->data.recv_status_on_client.status = &status;
   op->data.recv_status_on_client.status_details = &details;
   op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op->flags = 0;
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
   op->data.send_initial_metadata.count = 0;
+  op->flags = 0;
   op++;
   op->op = GRPC_OP_RECV_MESSAGE;
   op->data.recv_message = &request_payload_recv;
+  op->flags = 0;
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
   op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op->flags = 0;
   op++;
   op->op = GRPC_OP_SEND_MESSAGE;
   op->data.send_message = response_payload;
+  op->flags = 0;
   op++;
-  op = ops;
   op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
   op->data.send_status_from_server.trailing_metadata_count = 0;
   op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
   op->data.send_status_from_server.status_details = "xyz";
+  op->flags = 0;
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -216,8 +222,7 @@ static void test_invoke_large_request(grpc_end2end_test_config config) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(response_payload);
diff --git a/test/core/end2end/tests/max_concurrent_streams.c b/test/core/end2end/tests/max_concurrent_streams.c
index f8660bb901..1204c070af 100644
--- a/test/core/end2end/tests/max_concurrent_streams.c
+++ b/test/core/end2end/tests/max_concurrent_streams.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,20 +92,16 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -115,7 +113,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
@@ -145,12 +143,11 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -169,17 +166,15 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -190,8 +185,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_max_concurrent_streams(grpc_end2end_test_config config) {
@@ -204,8 +198,7 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
   grpc_call *s2;
   int live_call;
   gpr_timespec deadline;
-  cq_verifier *v_client;
-  cq_verifier *v_server;
+  cq_verifier *cqv;
   grpc_event ev;
   grpc_call_details call_details;
   grpc_metadata_array request_metadata_recv;
@@ -222,6 +215,8 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
   grpc_op ops[6];
   grpc_op *op;
   int was_cancelled;
+  int got_client_start;
+  int got_server_start;
 
   server_arg.key = GRPC_ARG_MAX_CONCURRENT_STREAMS;
   server_arg.type = GRPC_ARG_INTEGER;
@@ -231,8 +226,7 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
   server_args.args = &server_arg;
 
   f = begin_test(config, "test_max_concurrent_streams", NULL, &server_args);
-  v_client = cq_verifier_create(f.client_cq);
-  v_server = cq_verifier_create(f.server_cq);
+  cqv = cq_verifier_create(f.cq);
 
   grpc_metadata_array_init(&request_metadata_recv);
   grpc_metadata_array_init(&initial_metadata_recv1);
@@ -249,18 +243,17 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
 
   /* start two requests - ensuring that the second is not accepted until
      the first completes */
-  deadline = n_seconds_time(10);
-  c1 = grpc_channel_create_call(f.client, f.client_cq, "/alpha",
+  deadline = n_seconds_time(1000);
+  c1 = grpc_channel_create_call(f.client, f.cq, "/alpha",
                                 "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c1);
-  c2 = grpc_channel_create_call(f.client, f.client_cq, "/beta",
+  c2 = grpc_channel_create_call(f.client, f.cq, "/beta",
                                 "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c2);
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s1, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s1, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -314,18 +307,28 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
   GPR_ASSERT(GRPC_CALL_OK ==
              grpc_call_start_batch(c2, ops, op - ops, tag(402)));
 
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
-
-  ev = grpc_completion_queue_next(f.client_cq,
-                                  GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3));
-  GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
-  GPR_ASSERT(ev.success);
-  GPR_ASSERT(ev.tag == tag(301) || ev.tag == tag(401));
-  /* The /alpha or /beta calls started above could be invoked (but NOT both);
-   * check this here */
-  /* We'll get tag 303 or 403, we want 300, 400 */
-  live_call = ((int)(gpr_intptr)ev.tag) - 1;
+  got_client_start = 0;
+  got_server_start = 0;
+  live_call = -1;
+  while (!got_client_start || !got_server_start) {
+    ev = grpc_completion_queue_next(f.cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3));
+    GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
+    GPR_ASSERT(ev.success);
+    if (ev.tag == tag(101)) {
+      GPR_ASSERT(!got_server_start);
+      got_server_start = 1;
+    } else {
+      GPR_ASSERT(!got_client_start);
+      GPR_ASSERT(ev.tag == tag(301) || ev.tag == tag(401));
+      /* The /alpha or /beta calls started above could be invoked (but NOT
+       * both);
+       * check this here */
+      /* We'll get tag 303 or 403, we want 300, 400 */
+      live_call = ((int)(gpr_intptr)ev.tag) - 1;
+      got_client_start = 1;
+    }
+  }
+  GPR_ASSERT(live_call == 300 || live_call == 400);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -345,21 +348,18 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
   GPR_ASSERT(GRPC_CALL_OK ==
              grpc_call_start_batch(s1, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(live_call + 2), 1);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(live_call + 2), 1);
   /* first request is finished, we should be able to start the second */
   live_call = (live_call == 300) ? 400 : 300;
-  cq_expect_completion(v_client, tag(live_call + 1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(live_call + 1), 1);
+  cq_verify(cqv);
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s2, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(201)));
-  cq_expect_completion(v_server, tag(201), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s2, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(201)));
+  cq_expect_completion(cqv, tag(201), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -379,14 +379,11 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
   GPR_ASSERT(GRPC_CALL_OK ==
              grpc_call_start_batch(s2, ops, op - ops, tag(202)));
 
-  cq_expect_completion(v_client, tag(live_call + 2), 1);
-  cq_verify(v_client);
-
-  cq_expect_completion(v_server, tag(202), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(live_call + 2), 1);
+  cq_expect_completion(cqv, tag(202), 1);
+  cq_verify(cqv);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_call_destroy(c1);
   grpc_call_destroy(s1);
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index 8d3d2f10d9..9d716f1135 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void test_max_message_length(grpc_end2end_test_config config) {
@@ -104,8 +103,7 @@ static void test_max_message_length(grpc_end2end_test_config config) {
   grpc_channel_args server_args;
   grpc_call *c;
   grpc_call *s;
-  cq_verifier *v_client;
-  cq_verifier *v_server;
+  cq_verifier *cqv;
   grpc_op ops[6];
   grpc_op *op;
   gpr_slice request_payload_slice = gpr_slice_from_copied_string("hello world");
@@ -128,10 +126,9 @@ static void test_max_message_length(grpc_end2end_test_config config) {
   server_args.args = &server_arg;
 
   f = begin_test(config, "test_max_message_length", NULL, &server_args);
-  v_client = cq_verifier_create(f.client_cq);
-  v_server = cq_verifier_create(f.server_cq);
+  cqv = cq_verifier_create(f.cq);
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", gpr_inf_future);
   GPR_ASSERT(c);
 
@@ -165,12 +162,11 @@ static void test_max_message_length(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -179,11 +175,9 @@ static void test_max_message_length(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status != GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
@@ -200,8 +194,7 @@ static void test_max_message_length(grpc_end2end_test_config config) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   end_test(&f);
   config.tear_down_data(&f);
diff --git a/test/core/end2end/tests/no_op.c b/test/core/end2end/tests/no_op.c
index 1f32691e63..8ead664758 100644
--- a/test/core/end2end/tests/no_op.c
+++ b/test/core/end2end/tests/no_op.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void test_no_op(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/ping_pong_streaming.c b/test/core/end2end/tests/ping_pong_streaming.c
index 2b617ce00b..8a3ec96212 100644
--- a/test/core/end2end/tests/ping_pong_streaming.c
+++ b/test/core/end2end/tests/ping_pong_streaming.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,23 +92,20 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Client pings and server pongs. Repeat messages rounds before finishing. */
 static void test_pingpong_streaming(grpc_end2end_test_config config,
                                     int messages) {
-  grpc_end2end_test_fixture f = begin_test(config, "test_pingpong_streaming", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_pingpong_streaming", NULL, NULL);
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -125,7 +124,7 @@ static void test_pingpong_streaming(grpc_end2end_test_config config,
   gpr_slice request_payload_slice = gpr_slice_from_copied_string("hello world");
   gpr_slice response_payload_slice = gpr_slice_from_copied_string("hello you");
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
@@ -152,12 +151,11 @@ static void test_pingpong_streaming(grpc_end2end_test_config config,
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(100)));
-  cq_expect_completion(v_server, tag(100), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(100)));
+  cq_expect_completion(cqv, tag(100), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -192,8 +190,8 @@ static void test_pingpong_streaming(grpc_end2end_test_config config,
     op++;
     GPR_ASSERT(GRPC_CALL_OK ==
                grpc_call_start_batch(s, ops, op - ops, tag(102)));
-    cq_expect_completion(v_server, tag(102), 1);
-    cq_verify(v_server);
+    cq_expect_completion(cqv, tag(102), 1);
+    cq_verify(cqv);
 
     op = ops;
     op->op = GRPC_OP_SEND_MESSAGE;
@@ -202,11 +200,9 @@ static void test_pingpong_streaming(grpc_end2end_test_config config,
     op++;
     GPR_ASSERT(GRPC_CALL_OK ==
                grpc_call_start_batch(s, ops, op - ops, tag(103)));
-    cq_expect_completion(v_server, tag(103), 1);
-    cq_verify(v_server);
-
-    cq_expect_completion(v_client, tag(2), 1);
-    cq_verify(v_client);
+    cq_expect_completion(cqv, tag(103), 1);
+    cq_expect_completion(cqv, tag(2), 1);
+    cq_verify(cqv);
 
     grpc_byte_buffer_destroy(request_payload);
     grpc_byte_buffer_destroy(response_payload);
@@ -232,19 +228,16 @@ static void test_pingpong_streaming(grpc_end2end_test_config config,
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(104)));
 
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_expect_completion(v_client, tag(3), 1);
-  cq_verify(v_client);
-
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_expect_completion(v_server, tag(104), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_expect_completion(cqv, tag(3), 1);
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_expect_completion(cqv, tag(104), 1);
+  cq_verify(cqv);
 
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_metadata_array_destroy(&initial_metadata_recv);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
diff --git a/test/core/end2end/tests/registered_call.c b/test/core/end2end/tests/registered_call.c
index 43e34ff673..f44fd3a224 100644
--- a/test/core/end2end/tests/registered_call.c
+++ b/test/core/end2end/tests/registered_call.c
@@ -76,8 +76,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -92,20 +94,16 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -117,7 +115,7 @@ static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_registered_call(f.client, f.client_cq, rc, deadline);
+  c = grpc_channel_create_registered_call(f.client, f.cq, rc, deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -146,12 +144,11 @@ static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -170,17 +167,15 @@ static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -191,12 +186,12 @@ static void simple_request_body(grpc_end2end_test_fixture f, void *rc) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_invoke_simple_request(grpc_end2end_test_config config) {
-  grpc_end2end_test_fixture f = begin_test(config, "test_invoke_simple_request", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_simple_request", NULL, NULL);
   void *rc =
       grpc_channel_register_call(f.client, "/foo", "foo.test.google.fr:1234");
 
@@ -207,7 +202,8 @@ static void test_invoke_simple_request(grpc_end2end_test_config config) {
 
 static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
   int i;
-  grpc_end2end_test_fixture f = begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
   void *rc =
       grpc_channel_register_call(f.client, "/foo", "foo.test.google.fr:1234");
 
diff --git a/test/core/end2end/tests/request_response_with_binary_metadata_and_payload.c b/test/core/end2end/tests/request_response_with_binary_metadata_and_payload.c
index b1c6c98b0f..8b8a11babe 100644
--- a/test/core/end2end/tests/request_response_with_binary_metadata_and_payload.c
+++ b/test/core/end2end/tests/request_response_with_binary_metadata_and_payload.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Request/response with metadata and payload.*/
@@ -128,9 +127,9 @@ static void test_request_response_with_metadata_and_payload(
        "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff",
        16,
        {{NULL, NULL, NULL}}}};
-  grpc_end2end_test_fixture f = begin_test(config, "test_request_response_with_metadata_and_payload", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_request_response_with_metadata_and_payload", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -144,8 +143,8 @@ static void test_request_response_with_metadata_and_payload(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -183,12 +182,11 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -202,8 +200,8 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -222,11 +220,9 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
@@ -257,8 +253,7 @@ static void test_request_response_with_metadata_and_payload(
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(response_payload);
diff --git a/test/core/end2end/tests/request_response_with_metadata_and_payload.c b/test/core/end2end/tests/request_response_with_metadata_and_payload.c
index d0a7b9a4b5..ef6dfe9561 100644
--- a/test/core/end2end/tests/request_response_with_metadata_and_payload.c
+++ b/test/core/end2end/tests/request_response_with_metadata_and_payload.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Request/response with metadata and payload.*/
@@ -114,9 +113,9 @@ static void test_request_response_with_metadata_and_payload(
                              {"key2", "val2", 4, {{NULL, NULL, NULL}}}};
   grpc_metadata meta_s[2] = {{"key3", "val3", 4, {{NULL, NULL, NULL}}},
                              {"key4", "val4", 4, {{NULL, NULL, NULL}}}};
-  grpc_end2end_test_fixture f = begin_test(config, "test_request_response_with_metadata_and_payload", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_request_response_with_metadata_and_payload", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -130,8 +129,8 @@ static void test_request_response_with_metadata_and_payload(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -169,12 +168,11 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -188,8 +186,8 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -208,11 +206,9 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
@@ -235,8 +231,7 @@ static void test_request_response_with_metadata_and_payload(
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(response_payload);
diff --git a/test/core/end2end/tests/request_response_with_payload.c b/test/core/end2end/tests/request_response_with_payload.c
index 9bf4816b4e..38d3432f94 100644
--- a/test/core/end2end/tests/request_response_with_payload.c
+++ b/test/core/end2end/tests/request_response_with_payload.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void request_response_with_payload(grpc_end2end_test_fixture f) {
@@ -108,8 +107,7 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   grpc_byte_buffer *response_payload =
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -123,8 +121,8 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -161,12 +159,11 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -179,8 +176,8 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -199,11 +196,9 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
@@ -222,8 +217,7 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(response_payload);
@@ -235,7 +229,8 @@ static void request_response_with_payload(grpc_end2end_test_fixture f) {
    payload and status. */
 static void test_invoke_request_response_with_payload(
     grpc_end2end_test_config config) {
-  grpc_end2end_test_fixture f = begin_test(config, "test_invoke_request_response_with_payload", NULL, NULL);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_invoke_request_response_with_payload", NULL, NULL);
   request_response_with_payload(f);
   end_test(&f);
   config.tear_down_data(&f);
@@ -244,7 +239,8 @@ static void test_invoke_request_response_with_payload(
 static void test_invoke_10_request_response_with_payload(
     grpc_end2end_test_config config) {
   int i;
-  grpc_end2end_test_fixture f = begin_test(config, "test_invoke_10_request_response_with_payload", NULL, NULL);
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_invoke_10_request_response_with_payload", NULL, NULL);
   for (i = 0; i < 10; i++) {
     request_response_with_payload(f);
   }
diff --git a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
index 3de1d86757..665ad3d2a6 100644
--- a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
+++ b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
@@ -51,11 +51,7 @@ static const char iam_selector[] = "selector";
 static const char overridden_iam_token[] = "overridden_token";
 static const char overridden_iam_selector[] = "overridden_selector";
 
-typedef enum {
-  NONE,
-  OVERRIDE,
-  DESTROY
-} override_mode;
+typedef enum { NONE, OVERRIDE, DESTROY } override_mode;
 
 enum { TIMEOUT = 200000 };
 
@@ -88,8 +84,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -104,12 +102,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void print_auth_context(int is_client, const grpc_auth_context *ctx) {
@@ -132,10 +127,11 @@ static void print_auth_context(int is_client, const grpc_auth_context *ctx) {
 static void test_call_creds_failure(grpc_end2end_test_config config) {
   grpc_call *c;
   grpc_credentials *creds = NULL;
-  grpc_end2end_test_fixture f = begin_test(config, "test_call_creds_failure", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_call_creds_failure", NULL, NULL);
   gpr_timespec deadline = five_seconds_time();
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   /* Try with credentials unfit to be set on a call (channel creds). */
@@ -163,8 +159,7 @@ static void request_response_with_payload_and_call_creds(
   gpr_timespec deadline = five_seconds_time();
 
   grpc_end2end_test_fixture f = begin_test(config, test_name, NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -180,8 +175,8 @@ static void request_response_with_payload_and_call_creds(
   grpc_credentials *creds = NULL;
   const grpc_auth_context *s_auth_context = NULL;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
   creds = grpc_iam_credentials_create(iam_token, iam_selector);
   GPR_ASSERT(creds != NULL);
@@ -236,13 +231,11 @@ static void request_response_with_payload_and_call_creds(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(f.server, &s,
-                                                      &call_details,
-                                                      &request_metadata_recv,
-                                                      f.server_cq, f.server_cq,
-                                                      tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
   s_auth_context = grpc_call_auth_context(s);
   GPR_ASSERT(s_auth_context != NULL);
   print_auth_context(0, s_auth_context);
@@ -261,8 +254,8 @@ static void request_response_with_payload_and_call_creds(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -281,11 +274,9 @@ static void request_response_with_payload_and_call_creds(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
@@ -337,8 +328,7 @@ static void request_response_with_payload_and_call_creds(
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(response_payload);
@@ -351,17 +341,22 @@ static void request_response_with_payload_and_call_creds(
 
 void test_request_response_with_payload_and_call_creds(
     grpc_end2end_test_config config) {
-  request_response_with_payload_and_call_creds("test_request_response_with_payload_and_call_creds", config, NONE);
+  request_response_with_payload_and_call_creds(
+      "test_request_response_with_payload_and_call_creds", config, NONE);
 }
 
 void test_request_response_with_payload_and_overridden_call_creds(
     grpc_end2end_test_config config) {
-  request_response_with_payload_and_call_creds("test_request_response_with_payload_and_overridden_call_creds", config, OVERRIDE);
+  request_response_with_payload_and_call_creds(
+      "test_request_response_with_payload_and_overridden_call_creds", config,
+      OVERRIDE);
 }
 
 void test_request_response_with_payload_and_deleted_call_creds(
     grpc_end2end_test_config config) {
-  request_response_with_payload_and_call_creds("test_request_response_with_payload_and_deleted_call_creds", config, DESTROY);
+  request_response_with_payload_and_call_creds(
+      "test_request_response_with_payload_and_deleted_call_creds", config,
+      DESTROY);
 }
 
 void grpc_end2end_tests(grpc_end2end_test_config config) {
@@ -372,4 +367,3 @@ void grpc_end2end_tests(grpc_end2end_test_config config) {
     test_request_response_with_payload_and_deleted_call_creds(config);
   }
 }
-
diff --git a/test/core/end2end/tests/request_response_with_trailing_metadata_and_payload.c b/test/core/end2end/tests/request_response_with_trailing_metadata_and_payload.c
index e91ebf41c6..a5c0851d05 100644
--- a/test/core/end2end/tests/request_response_with_trailing_metadata_and_payload.c
+++ b/test/core/end2end/tests/request_response_with_trailing_metadata_and_payload.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Request/response with metadata and payload.*/
@@ -110,12 +109,15 @@ static void test_request_response_with_metadata_and_payload(
   grpc_byte_buffer *response_payload =
       grpc_raw_byte_buffer_create(&response_payload_slice, 1);
   gpr_timespec deadline = five_seconds_time();
-  grpc_metadata meta_c[2] = {{"key1", "val1", 4, {{NULL, NULL, NULL}}}, {"key2", "val2", 4, {{NULL, NULL, NULL}}}};
-  grpc_metadata meta_s[2] = {{"key3", "val3", 4, {{NULL, NULL, NULL}}}, {"key4", "val4", 4, {{NULL, NULL, NULL}}}};
-  grpc_metadata meta_t[2] = {{"key5", "val5", 4, {{NULL, NULL, NULL}}}, {"key6", "val6", 4, {{NULL, NULL, NULL}}}};
-  grpc_end2end_test_fixture f = begin_test(config, "test_request_response_with_metadata_and_payload", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_metadata meta_c[2] = {{"key1", "val1", 4, {{NULL, NULL, NULL}}},
+                             {"key2", "val2", 4, {{NULL, NULL, NULL}}}};
+  grpc_metadata meta_s[2] = {{"key3", "val3", 4, {{NULL, NULL, NULL}}},
+                             {"key4", "val4", 4, {{NULL, NULL, NULL}}}};
+  grpc_metadata meta_t[2] = {{"key5", "val5", 4, {{NULL, NULL, NULL}}},
+                             {"key6", "val6", 4, {{NULL, NULL, NULL}}}};
+  grpc_end2end_test_fixture f = begin_test(
+      config, "test_request_response_with_metadata_and_payload", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -129,8 +131,8 @@ static void test_request_response_with_metadata_and_payload(
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -168,13 +170,11 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(f.server, &s,
-                                                      &call_details,
-                                                      &request_metadata_recv,
-                                                      f.server_cq, f.server_cq,
-                                                      tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -188,8 +188,8 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -209,11 +209,9 @@ static void test_request_response_with_metadata_and_payload(
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
@@ -237,8 +235,7 @@ static void test_request_response_with_metadata_and_payload(
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(response_payload);
diff --git a/test/core/end2end/tests/request_with_flags.c b/test/core/end2end/tests/request_with_flags.c
index 5ad475544c..fb55a6512f 100644
--- a/test/core/end2end/tests/request_with_flags.c
+++ b/test/core/end2end/tests/request_with_flags.c
@@ -75,8 +75,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -91,12 +93,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void test_invoke_request_with_flags(
@@ -106,11 +105,10 @@ static void test_invoke_request_with_flags(
   gpr_slice request_payload_slice = gpr_slice_from_copied_string("hello world");
   grpc_byte_buffer *request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
-  gpr_timespec deadline = five_seconds_time();
+  gpr_timespec deadline = GRPC_TIMEOUT_MILLIS_TO_DEADLINE(100);
   grpc_end2end_test_fixture f =
       begin_test(config, "test_invoke_request_with_flags", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -123,8 +121,8 @@ static void test_invoke_request_with_flags(
   size_t details_capacity = 0;
   grpc_call_error expectation;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -158,6 +156,11 @@ static void test_invoke_request_with_flags(
   expectation = call_start_batch_expected_result;
   GPR_ASSERT(expectation == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
+  if (expectation == GRPC_CALL_OK) {
+    cq_expect_completion(cqv, tag(1), 1);
+    cq_verify(cqv);
+  }
+
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
   grpc_metadata_array_destroy(&trailing_metadata_recv);
@@ -166,8 +169,7 @@ static void test_invoke_request_with_flags(
 
   grpc_call_destroy(c);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(request_payload_recv);
@@ -178,7 +180,7 @@ static void test_invoke_request_with_flags(
 
 void grpc_end2end_tests(grpc_end2end_test_config config) {
   size_t i;
-  gpr_uint32 flags_for_op[GRPC_OP_RECV_CLOSE_ON_SERVER+1];
+  gpr_uint32 flags_for_op[GRPC_OP_RECV_CLOSE_ON_SERVER + 1];
 
   {
     /* check that all grpc_op_types fail when their flag value is set to an
diff --git a/test/core/end2end/tests/request_with_large_metadata.c b/test/core/end2end/tests/request_with_large_metadata.c
index cf6f4b23e4..ad34c69774 100644
--- a/test/core/end2end/tests/request_with_large_metadata.c
+++ b/test/core/end2end/tests/request_with_large_metadata.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Request with a large amount of metadata.*/
@@ -107,9 +106,9 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
   gpr_timespec deadline = five_seconds_time();
   grpc_metadata meta;
-  grpc_end2end_test_fixture f = begin_test(config, "test_request_with_large_metadata", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_request_with_large_metadata", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -123,8 +122,8 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   int was_cancelled = 2;
   const int large_size = 64 * 1024;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   meta.key = "key";
@@ -164,12 +163,11 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -182,8 +180,8 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -198,11 +196,9 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
@@ -221,8 +217,7 @@ static void test_request_with_large_metadata(grpc_end2end_test_config config) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(request_payload_recv);
diff --git a/test/core/end2end/tests/request_with_payload.c b/test/core/end2end/tests/request_with_payload.c
index 935aa5878b..8db6457830 100644
--- a/test/core/end2end/tests/request_with_payload.c
+++ b/test/core/end2end/tests/request_with_payload.c
@@ -74,8 +74,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -90,12 +92,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 /* Client sends a request with payload, server reads then returns status. */
@@ -106,9 +105,9 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   grpc_byte_buffer *request_payload =
       grpc_raw_byte_buffer_create(&request_payload_slice, 1);
   gpr_timespec deadline = five_seconds_time();
-  grpc_end2end_test_fixture f = begin_test(config, "test_invoke_request_with_payload", NULL, NULL);
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_request_with_payload", NULL, NULL);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -121,8 +120,8 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f.client, f.cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -155,12 +154,11 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -173,8 +171,8 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
@@ -189,11 +187,9 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(103)));
 
-  cq_expect_completion(v_server, tag(103), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(103), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_OK);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
@@ -211,8 +207,7 @@ static void test_invoke_request_with_payload(grpc_end2end_test_config config) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 
   grpc_byte_buffer_destroy(request_payload);
   grpc_byte_buffer_destroy(request_payload_recv);
diff --git a/test/core/end2end/tests/server_finishes_request.c b/test/core/end2end/tests/server_finishes_request.c
index 973f024b4d..062a59aca2 100644
--- a/test/core/end2end/tests/server_finishes_request.c
+++ b/test/core/end2end/tests/server_finishes_request.c
@@ -76,8 +76,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -92,20 +94,16 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -117,7 +115,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
@@ -144,12 +142,11 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -168,17 +165,15 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -189,8 +184,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_invoke_simple_request(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/simple_delayed_request.c b/test/core/end2end/tests/simple_delayed_request.c
index 36558eca1d..a2665d7564 100644
--- a/test/core/end2end/tests/simple_delayed_request.c
+++ b/test/core/end2end/tests/simple_delayed_request.c
@@ -62,8 +62,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -78,12 +80,9 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void simple_delayed_request_body(grpc_end2end_test_config config,
@@ -94,8 +93,7 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f->client_cq);
-  cq_verifier *v_server = cq_verifier_create(f->server_cq);
+  cq_verifier *cqv = cq_verifier_create(f->cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -109,8 +107,8 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
 
   config.init_client(f, client_args);
 
-  c = grpc_channel_create_call(f->client, f->client_cq, "/foo",
-                               "foo.test.google.fr", deadline);
+  c = grpc_channel_create_call(f->client, f->cq, "/foo", "foo.test.google.fr",
+                               deadline);
   GPR_ASSERT(c);
 
   grpc_metadata_array_init(&initial_metadata_recv);
@@ -141,12 +139,12 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
 
   config.init_server(f, server_args);
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f->server, &s, &call_details,
-                                      &request_metadata_recv, f->server_cq,
-                                      f->server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(f->server, &s,
+                                                      &call_details,
+                                                      &request_metadata_recv,
+                                                      f->cq, f->cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -165,17 +163,15 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -186,8 +182,7 @@ static void simple_delayed_request_body(grpc_end2end_test_config config,
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_simple_delayed_request_short(grpc_end2end_test_config config) {
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index 06f922351e..6194b841d8 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -76,8 +76,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -92,20 +94,16 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -117,7 +115,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
@@ -147,12 +145,11 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -171,17 +168,15 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -192,8 +187,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
 static void test_invoke_simple_request(grpc_end2end_test_config config) {
@@ -207,7 +201,8 @@ static void test_invoke_simple_request(grpc_end2end_test_config config) {
 
 static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
   int i;
-  grpc_end2end_test_fixture f = begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
+  grpc_end2end_test_fixture f =
+      begin_test(config, "test_invoke_10_simple_requests", NULL, NULL);
   for (i = 0; i < 10; i++) {
     simple_request_body(f);
     gpr_log(GPR_INFO, "Passed simple request %d", i);
@@ -217,6 +212,9 @@ static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
 }
 
 void grpc_end2end_tests(grpc_end2end_test_config config) {
-  test_invoke_simple_request(config);
+  int i;
+  for (i = 0; i < 10; i++) {
+    test_invoke_simple_request(config);
+  }
   test_invoke_10_simple_requests(config);
 }
diff --git a/test/core/end2end/tests/simple_request_with_high_initial_sequence_number.c b/test/core/end2end/tests/simple_request_with_high_initial_sequence_number.c
index 1d7a150d7e..2cd638cbb9 100644
--- a/test/core/end2end/tests/simple_request_with_high_initial_sequence_number.c
+++ b/test/core/end2end/tests/simple_request_with_high_initial_sequence_number.c
@@ -76,8 +76,10 @@ static void drain_cq(grpc_completion_queue *cq) {
 
 static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
-  grpc_server_shutdown_and_notify(f->server, f->server_cq, tag(1000));
-  GPR_ASSERT(grpc_completion_queue_pluck(f->server_cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+  grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
+  GPR_ASSERT(grpc_completion_queue_pluck(f->cq, tag(1000),
+                                         GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                 .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
 }
@@ -92,20 +94,16 @@ static void end_test(grpc_end2end_test_fixture *f) {
   shutdown_server(f);
   shutdown_client(f);
 
-  grpc_completion_queue_shutdown(f->server_cq);
-  drain_cq(f->server_cq);
-  grpc_completion_queue_destroy(f->server_cq);
-  grpc_completion_queue_shutdown(f->client_cq);
-  drain_cq(f->client_cq);
-  grpc_completion_queue_destroy(f->client_cq);
+  grpc_completion_queue_shutdown(f->cq);
+  drain_cq(f->cq);
+  grpc_completion_queue_destroy(f->cq);
 }
 
 static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call *c;
   grpc_call *s;
   gpr_timespec deadline = five_seconds_time();
-  cq_verifier *v_client = cq_verifier_create(f.client_cq);
-  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  cq_verifier *cqv = cq_verifier_create(f.cq);
   grpc_op ops[6];
   grpc_op *op;
   grpc_metadata_array initial_metadata_recv;
@@ -117,7 +115,7 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   size_t details_capacity = 0;
   int was_cancelled = 2;
 
-  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+  c = grpc_channel_create_call(f.client, f.cq, "/foo",
                                "foo.test.google.fr:1234", deadline);
   GPR_ASSERT(c);
 
@@ -147,12 +145,11 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
 
-  GPR_ASSERT(GRPC_CALL_OK ==
-             grpc_server_request_call(f.server, &s, &call_details,
-                                      &request_metadata_recv, f.server_cq,
-                                      f.server_cq, tag(101)));
-  cq_expect_completion(v_server, tag(101), 1);
-  cq_verify(v_server);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(
+                                 f.server, &s, &call_details,
+                                 &request_metadata_recv, f.cq, f.cq, tag(101)));
+  cq_expect_completion(cqv, tag(101), 1);
+  cq_verify(cqv);
 
   op = ops;
   op->op = GRPC_OP_SEND_INITIAL_METADATA;
@@ -171,17 +168,15 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   op++;
   GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
 
-  cq_expect_completion(v_server, tag(102), 1);
-  cq_verify(v_server);
-
-  cq_expect_completion(v_client, tag(1), 1);
-  cq_verify(v_client);
+  cq_expect_completion(cqv, tag(102), 1);
+  cq_expect_completion(cqv, tag(1), 1);
+  cq_verify(cqv);
 
   GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
   GPR_ASSERT(0 == strcmp(details, "xyz"));
   GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
   GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr:1234"));
-  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(was_cancelled == 1);
 
   gpr_free(details);
   grpc_metadata_array_destroy(&initial_metadata_recv);
@@ -192,11 +187,11 @@ static void simple_request_body(grpc_end2end_test_fixture f) {
   grpc_call_destroy(c);
   grpc_call_destroy(s);
 
-  cq_verifier_destroy(v_client);
-  cq_verifier_destroy(v_server);
+  cq_verifier_destroy(cqv);
 }
 
-static void test_invoke_10_simple_requests(grpc_end2end_test_config config, int initial_sequence_number) {
+static void test_invoke_10_simple_requests(grpc_end2end_test_config config,
+                                           int initial_sequence_number) {
   int i;
   grpc_end2end_test_fixture f;
   grpc_arg client_arg;
diff --git a/test/core/fling/server.c b/test/core/fling/server.c
index e58d721c86..9542e15ad0 100644
--- a/test/core/fling/server.c
+++ b/test/core/fling/server.c
@@ -234,7 +234,9 @@ int main(int argc, char **argv) {
     if (got_sigint && !shutdown_started) {
       gpr_log(GPR_INFO, "Shutting down due to SIGINT");
       grpc_server_shutdown_and_notify(server, cq, tag(1000));
-      GPR_ASSERT(grpc_completion_queue_pluck(cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)).type == GRPC_OP_COMPLETE);
+      GPR_ASSERT(grpc_completion_queue_pluck(
+                     cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
+                     .type == GRPC_OP_COMPLETE);
       grpc_completion_queue_shutdown(cq);
       shutdown_started = 1;
     }
diff --git a/test/core/httpcli/httpcli_test.c b/test/core/httpcli/httpcli_test.c
index 76820916a1..6e579bc045 100644
--- a/test/core/httpcli/httpcli_test.c
+++ b/test/core/httpcli/httpcli_test.c
@@ -35,6 +35,7 @@
 
 #include <string.h>
 
+#include <grpc/grpc.h>
 #include "src/core/iomgr/iomgr.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -44,14 +45,16 @@
 #include "test/core/util/port.h"
 #include "test/core/util/test_config.h"
 
-static gpr_event g_done;
+static int g_done = 0;
+static grpc_httpcli_context g_context;
+static grpc_pollset g_pollset;
 
 static gpr_timespec n_seconds_time(int seconds) {
   return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(seconds);
 }
 
 static void on_finish(void *arg, const grpc_httpcli_response *response) {
-  const char *expect = 
+  const char *expect =
       "<html><head><title>Hello world!</title></head>"
       "<body><p>This is a test</p></body></html>";
   GPR_ASSERT(arg == (void *)42);
@@ -59,54 +62,69 @@ static void on_finish(void *arg, const grpc_httpcli_response *response) {
   GPR_ASSERT(response->status == 200);
   GPR_ASSERT(response->body_length == strlen(expect));
   GPR_ASSERT(0 == memcmp(expect, response->body, response->body_length));
-  gpr_event_set(&g_done, (void *)1);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  g_done = 1;
+  grpc_pollset_kick(&g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 static void test_get(int use_ssl, int port) {
   grpc_httpcli_request req;
-  char* host;
+  char *host;
 
+  g_done = 0;
   gpr_log(GPR_INFO, "running %s with use_ssl=%d.", "test_get", use_ssl);
 
   gpr_asprintf(&host, "localhost:%d", port);
   gpr_log(GPR_INFO, "requesting from %s", host);
 
-  gpr_event_init(&g_done);
   memset(&req, 0, sizeof(req));
   req.host = host;
   req.path = "/get";
   req.use_ssl = use_ssl;
 
-  grpc_httpcli_get(&req, n_seconds_time(15), on_finish, (void *)42);
+  grpc_httpcli_get(&g_context, &g_pollset, &req, n_seconds_time(15), on_finish,
+                   (void *)42);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  while (!g_done) {
+    grpc_pollset_work(&g_pollset, n_seconds_time(20));
+  }
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
   gpr_free(host);
-  GPR_ASSERT(gpr_event_wait(&g_done, n_seconds_time(20)));
 }
 
 static void test_post(int use_ssl, int port) {
   grpc_httpcli_request req;
-  char* host;
+  char *host;
 
+  g_done = 0;
   gpr_log(GPR_INFO, "running %s with use_ssl=%d.", "test_post", (int)use_ssl);
 
   gpr_asprintf(&host, "localhost:%d", port);
   gpr_log(GPR_INFO, "posting to %s", host);
 
-  gpr_event_init(&g_done);
   memset(&req, 0, sizeof(req));
   req.host = host;
   req.path = "/post";
   req.use_ssl = use_ssl;
 
-  grpc_httpcli_post(&req, "hello", 5, n_seconds_time(15), on_finish,
-                    (void *)42);
-  GPR_ASSERT(gpr_event_wait(&g_done, n_seconds_time(20)));
+  grpc_httpcli_post(&g_context, &g_pollset, &req, "hello", 5,
+                    n_seconds_time(15), on_finish, (void *)42);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  while (!g_done) {
+    grpc_pollset_work(&g_pollset, n_seconds_time(20));
+  }
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
+  gpr_free(host);
 }
 
+static void destroy_pollset(void *ignored) { grpc_pollset_destroy(&g_pollset); }
+
 int main(int argc, char **argv) {
-  gpr_subprocess* server;
+  gpr_subprocess *server;
   char *me = argv[0];
   char *lslash = strrchr(me, '/');
-  char* args[4];
+  char *args[4];
   char root[1024];
   int port = grpc_pick_unused_port_or_die();
 
@@ -122,7 +140,7 @@ int main(int argc, char **argv) {
   gpr_asprintf(&args[0], "%s/../../test/core/httpcli/test_server.py", root);
   args[1] = "--port";
   gpr_asprintf(&args[2], "%d", port);
-  server = gpr_subprocess_create(3, (const char**)args);
+  server = gpr_subprocess_create(3, (const char **)args);
   GPR_ASSERT(server);
   gpr_free(args[0]);
   gpr_free(args[2]);
@@ -130,12 +148,16 @@ int main(int argc, char **argv) {
   gpr_sleep_until(gpr_time_add(gpr_now(), gpr_time_from_seconds(5)));
 
   grpc_test_init(argc, argv);
-  grpc_iomgr_init();
+  grpc_init();
+  grpc_httpcli_context_init(&g_context);
+  grpc_pollset_init(&g_pollset);
 
   test_get(0, port);
   test_post(0, port);
 
-  grpc_iomgr_shutdown();
+  grpc_httpcli_context_destroy(&g_context);
+  grpc_pollset_shutdown(&g_pollset, destroy_pollset, NULL);
+  grpc_shutdown();
 
   gpr_subprocess_destroy(server);
 
diff --git a/test/core/iomgr/endpoint_tests.c b/test/core/iomgr/endpoint_tests.c
index f9c5282f19..8198c24752 100644
--- a/test/core/iomgr/endpoint_tests.c
+++ b/test/core/iomgr/endpoint_tests.c
@@ -57,6 +57,8 @@
 
 */
 
+static grpc_pollset *g_pollset;
+
 size_t count_and_unref_slices(gpr_slice *slices, size_t nslices,
                               int *current_data) {
   size_t num_bytes = 0;
@@ -111,8 +113,6 @@ static gpr_slice *allocate_blocks(size_t num_bytes, size_t slice_size,
 struct read_and_write_test_state {
   grpc_endpoint *read_ep;
   grpc_endpoint *write_ep;
-  gpr_mu mu;
-  gpr_cv cv;
   size_t target_bytes;
   size_t bytes_read;
   size_t current_write_size;
@@ -130,10 +130,10 @@ static void read_and_write_test_read_handler(void *data, gpr_slice *slices,
   GPR_ASSERT(error != GRPC_ENDPOINT_CB_ERROR);
   if (error == GRPC_ENDPOINT_CB_SHUTDOWN) {
     gpr_log(GPR_INFO, "Read handler shutdown");
-    gpr_mu_lock(&state->mu);
+    gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
     state->read_done = 1;
-    gpr_cv_signal(&state->cv);
-    gpr_mu_unlock(&state->mu);
+    grpc_pollset_kick(g_pollset);
+    gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
     return;
   }
 
@@ -141,10 +141,10 @@ static void read_and_write_test_read_handler(void *data, gpr_slice *slices,
       count_and_unref_slices(slices, nslices, &state->current_read_data);
   if (state->bytes_read == state->target_bytes) {
     gpr_log(GPR_INFO, "Read handler done");
-    gpr_mu_lock(&state->mu);
+    gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
     state->read_done = 1;
-    gpr_cv_signal(&state->cv);
-    gpr_mu_unlock(&state->mu);
+    grpc_pollset_kick(g_pollset);
+    gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
   } else {
     grpc_endpoint_notify_on_read(state->read_ep,
                                  read_and_write_test_read_handler, data);
@@ -160,14 +160,15 @@ static void read_and_write_test_write_handler(void *data,
 
   GPR_ASSERT(error != GRPC_ENDPOINT_CB_ERROR);
 
-  gpr_log(GPR_DEBUG, "%s: error=%d", "read_and_write_test_write_handler", error);
+  gpr_log(GPR_DEBUG, "%s: error=%d", "read_and_write_test_write_handler",
+          error);
 
   if (error == GRPC_ENDPOINT_CB_SHUTDOWN) {
     gpr_log(GPR_INFO, "Write handler shutdown");
-    gpr_mu_lock(&state->mu);
+    gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
     state->write_done = 1;
-    gpr_cv_signal(&state->cv);
-    gpr_mu_unlock(&state->mu);
+    grpc_pollset_kick(g_pollset);
+    gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
     return;
   }
 
@@ -198,10 +199,10 @@ static void read_and_write_test_write_handler(void *data,
   GPR_ASSERT(state->bytes_written == state->target_bytes);
 
   gpr_log(GPR_INFO, "Write handler done");
-  gpr_mu_lock(&state->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
   state->write_done = 1;
-  gpr_cv_signal(&state->cv);
-  gpr_mu_unlock(&state->mu);
+  grpc_pollset_kick(g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
 }
 
 /* Do both reading and writing using the grpc_endpoint API.
@@ -213,7 +214,8 @@ static void read_and_write_test(grpc_endpoint_test_config config,
                                 size_t slice_size, int shutdown) {
   struct read_and_write_test_state state;
   gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20);
-  grpc_endpoint_test_fixture f = begin_test(config, "read_and_write_test", slice_size);
+  grpc_endpoint_test_fixture f =
+      begin_test(config, "read_and_write_test", slice_size);
 
   if (shutdown) {
     gpr_log(GPR_INFO, "Start read and write shutdown test");
@@ -222,9 +224,6 @@ static void read_and_write_test(grpc_endpoint_test_config config,
             num_bytes, slice_size);
   }
 
-  gpr_mu_init(&state.mu);
-  gpr_cv_init(&state.cv);
-
   state.read_ep = f.client_ep;
   state.write_ep = f.server_ep;
   state.target_bytes = num_bytes;
@@ -253,29 +252,24 @@ static void read_and_write_test(grpc_endpoint_test_config config,
     grpc_endpoint_shutdown(state.write_ep);
   }
 
-  gpr_mu_lock(&state.mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
   while (!state.read_done || !state.write_done) {
-    if (gpr_cv_wait(&state.cv, &state.mu, deadline)) {
-      gpr_log(GPR_ERROR, "timeout: read_done=%d, write_done=%d",
-              state.read_done, state.write_done);
-      abort();
-    }
+    GPR_ASSERT(gpr_time_cmp(gpr_now(), deadline) < 0);
+    grpc_pollset_work(g_pollset, deadline);
   }
-  gpr_mu_unlock(&state.mu);
+  gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
 
   grpc_endpoint_destroy(state.read_ep);
   grpc_endpoint_destroy(state.write_ep);
-  gpr_mu_destroy(&state.mu);
-  gpr_cv_destroy(&state.cv);
   end_test(config);
 }
 
 struct timeout_test_state {
-  gpr_event io_done;
+  int io_done;
 };
 
 typedef struct {
-  gpr_event ev;
+  int done;
   grpc_endpoint *ep;
 } shutdown_during_write_test_state;
 
@@ -291,7 +285,10 @@ static void shutdown_during_write_test_read_handler(
 
   if (error != GRPC_ENDPOINT_CB_OK) {
     grpc_endpoint_destroy(st->ep);
-    gpr_event_set(&st->ev, (void *)(gpr_intptr) error);
+    gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
+    st->done = error;
+    grpc_pollset_kick(g_pollset);
+    gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
   } else {
     grpc_endpoint_notify_on_read(
         st->ep, shutdown_during_write_test_read_handler, user_data);
@@ -310,7 +307,10 @@ static void shutdown_during_write_test_write_handler(
     gpr_log(GPR_ERROR,
             "shutdown_during_write_test_write_handler completed unexpectedly");
   }
-  gpr_event_set(&st->ev, (void *)(gpr_intptr) 1);
+  gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
+  st->done = 1;
+  grpc_pollset_kick(g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
 }
 
 static void shutdown_during_write_test(grpc_endpoint_test_config config,
@@ -323,14 +323,15 @@ static void shutdown_during_write_test(grpc_endpoint_test_config config,
   shutdown_during_write_test_state read_st;
   shutdown_during_write_test_state write_st;
   gpr_slice *slices;
-  grpc_endpoint_test_fixture f = begin_test(config, "shutdown_during_write_test", slice_size);
+  grpc_endpoint_test_fixture f =
+      begin_test(config, "shutdown_during_write_test", slice_size);
 
   gpr_log(GPR_INFO, "testing shutdown during a write");
 
   read_st.ep = f.client_ep;
   write_st.ep = f.server_ep;
-  gpr_event_init(&read_st.ev);
-  gpr_event_init(&write_st.ev);
+  read_st.done = 0;
+  write_st.done = 0;
 
   grpc_endpoint_notify_on_read(
       read_st.ep, shutdown_during_write_test_read_handler, &read_st);
@@ -347,9 +348,19 @@ static void shutdown_during_write_test(grpc_endpoint_test_config config,
       case GRPC_ENDPOINT_WRITE_PENDING:
         grpc_endpoint_shutdown(write_st.ep);
         deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
-        GPR_ASSERT(gpr_event_wait(&write_st.ev, deadline));
+        gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
+        while (!write_st.done) {
+          GPR_ASSERT(gpr_time_cmp(gpr_now(), deadline) < 0);
+          grpc_pollset_work(g_pollset, deadline);
+        }
+        gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
         grpc_endpoint_destroy(write_st.ep);
-        GPR_ASSERT(gpr_event_wait(&read_st.ev, deadline));
+        gpr_mu_lock(GRPC_POLLSET_MU(g_pollset));
+        while (!read_st.done) {
+          GPR_ASSERT(gpr_time_cmp(gpr_now(), deadline) < 0);
+          grpc_pollset_work(g_pollset, deadline);
+        }
+        gpr_mu_unlock(GRPC_POLLSET_MU(g_pollset));
         gpr_free(slices);
         end_test(config);
         return;
@@ -361,9 +372,12 @@ static void shutdown_during_write_test(grpc_endpoint_test_config config,
   abort();
 }
 
-void grpc_endpoint_tests(grpc_endpoint_test_config config) {
+void grpc_endpoint_tests(grpc_endpoint_test_config config,
+                         grpc_pollset *pollset) {
+  g_pollset = pollset;
   read_and_write_test(config, 10000000, 100000, 8192, 0);
   read_and_write_test(config, 1000000, 100000, 1, 0);
   read_and_write_test(config, 100000000, 100000, 1, 1);
   shutdown_during_write_test(config, 1000);
+  g_pollset = NULL;
 }
diff --git a/test/core/iomgr/endpoint_tests.h b/test/core/iomgr/endpoint_tests.h
index 1679d7bd4f..700f854891 100644
--- a/test/core/iomgr/endpoint_tests.h
+++ b/test/core/iomgr/endpoint_tests.h
@@ -52,6 +52,7 @@ struct grpc_endpoint_test_config {
   void (*clean_up)();
 };
 
-void grpc_endpoint_tests(grpc_endpoint_test_config config);
+void grpc_endpoint_tests(grpc_endpoint_test_config config,
+                         grpc_pollset *pollset);
 
-#endif  /* GRPC_TEST_CORE_IOMGR_ENDPOINT_TESTS_H */
+#endif /* GRPC_TEST_CORE_IOMGR_ENDPOINT_TESTS_H */
diff --git a/test/core/iomgr/fd_conservation_posix_test.c b/test/core/iomgr/fd_conservation_posix_test.c
new file mode 100644
index 0000000000..aa4551f2f1
--- /dev/null
+++ b/test/core/iomgr/fd_conservation_posix_test.c
@@ -0,0 +1,63 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <sys/resource.h>
+
+#include <grpc/support/log.h>
+
+#include "test/core/util/test_config.h"
+#include "src/core/iomgr/endpoint_pair.h"
+#include "src/core/iomgr/iomgr.h"
+
+int main(int argc, char **argv) {
+	int i;
+	struct rlimit rlim;
+	grpc_endpoint_pair p;
+  grpc_test_init(argc, argv);
+  grpc_iomgr_init();
+
+  /* set max # of file descriptors to a low value, and
+     verify we can create and destroy many more than this number
+     of descriptors */
+  rlim.rlim_cur = rlim.rlim_max = 10;
+  GPR_ASSERT(0 == setrlimit(RLIMIT_NOFILE, &rlim));
+
+  for (i = 0; i < 100; i++) {
+  	p = grpc_iomgr_create_endpoint_pair("test", 1);
+  	grpc_endpoint_destroy(p.client);
+  	grpc_endpoint_destroy(p.server);
+  }
+
+  grpc_iomgr_shutdown();
+  return 0;
+}
diff --git a/test/core/iomgr/fd_posix_test.c b/test/core/iomgr/fd_posix_test.c
index 2c8a89e4cd..fe08ec495f 100644
--- a/test/core/iomgr/fd_posix_test.c
+++ b/test/core/iomgr/fd_posix_test.c
@@ -51,6 +51,8 @@
 #include <grpc/support/time.h>
 #include "test/core/util/test_config.h"
 
+static grpc_pollset g_pollset;
+
 /* buffer size used to send and receive data.
    1024 is the minimal value to set TCP send and receive buffer. */
 #define BUF_SIZE 1024
@@ -94,16 +96,12 @@ void no_op_cb(void *arg, int success) {}
 typedef struct {
   grpc_fd *em_fd;           /* listening fd */
   ssize_t read_bytes_total; /* total number of received bytes */
-  gpr_mu mu;                /* protect done and done_cv */
-  gpr_cv done_cv;           /* signaled when a server finishes serving */
   int done;                 /* set to 1 when a server finishes serving */
   grpc_iomgr_closure listen_closure;
 } server;
 
 static void server_init(server *sv) {
   sv->read_bytes_total = 0;
-  gpr_mu_init(&sv->mu);
-  gpr_cv_init(&sv->done_cv);
   sv->done = 0;
 }
 
@@ -122,7 +120,7 @@ static void session_shutdown_cb(void *arg, /*session*/
                                 int success) {
   session *se = arg;
   server *sv = se->sv;
-  grpc_fd_orphan(se->em_fd, NULL, NULL);
+  grpc_fd_orphan(se->em_fd, NULL, "a");
   gpr_free(se);
   /* Start to shutdown listen fd. */
   grpc_fd_shutdown(sv->em_fd);
@@ -177,12 +175,12 @@ static void session_read_cb(void *arg, /*session*/
 static void listen_shutdown_cb(void *arg /*server*/, int success) {
   server *sv = arg;
 
-  grpc_fd_orphan(sv->em_fd, NULL, NULL);
+  grpc_fd_orphan(sv->em_fd, NULL, "b");
 
-  gpr_mu_lock(&sv->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   sv->done = 1;
-  gpr_cv_signal(&sv->done_cv);
-  gpr_mu_unlock(&sv->mu);
+  grpc_pollset_kick(&g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 /* Called when a new TCP connection request arrives in the listening port. */
@@ -209,6 +207,7 @@ static void listen_cb(void *arg, /*=sv_arg*/
   se = gpr_malloc(sizeof(*se));
   se->sv = sv;
   se->em_fd = grpc_fd_create(fd, "listener");
+  grpc_pollset_add_fd(&g_pollset, se->em_fd);
   se->session_read_closure.cb = session_read_cb;
   se->session_read_closure.cb_arg = se;
   grpc_fd_notify_on_read(se->em_fd, &se->session_read_closure);
@@ -237,6 +236,7 @@ static int server_start(server *sv) {
   GPR_ASSERT(listen(fd, MAX_NUM_FD) == 0);
 
   sv->em_fd = grpc_fd_create(fd, "server");
+  grpc_pollset_add_fd(&g_pollset, sv->em_fd);
   /* Register to be interested in reading from listen_fd. */
   sv->listen_closure.cb = listen_cb;
   sv->listen_closure.cb_arg = sv;
@@ -247,12 +247,11 @@ static int server_start(server *sv) {
 
 /* Wait and shutdown a sever. */
 static void server_wait_and_shutdown(server *sv) {
-  gpr_mu_lock(&sv->mu);
-  while (!sv->done) gpr_cv_wait(&sv->done_cv, &sv->mu, gpr_inf_future);
-  gpr_mu_unlock(&sv->mu);
-
-  gpr_mu_destroy(&sv->mu);
-  gpr_cv_destroy(&sv->done_cv);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  while (!sv->done) {
+    grpc_pollset_work(&g_pollset, gpr_inf_future);
+  }
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 /* ===An upload client to test notify_on_write=== */
@@ -271,9 +270,7 @@ typedef struct {
      notify_on_write to schedule another write. */
   int client_write_cnt;
 
-  gpr_mu mu;      /* protect done and done_cv */
-  gpr_cv done_cv; /* signaled when a client finishes sending */
-  int done;       /* set to 1 when a client finishes sending */
+  int done; /* set to 1 when a client finishes sending */
   grpc_iomgr_closure write_closure;
 } client;
 
@@ -281,17 +278,15 @@ static void client_init(client *cl) {
   memset(cl->write_buf, 0, sizeof(cl->write_buf));
   cl->write_bytes_total = 0;
   cl->client_write_cnt = 0;
-  gpr_mu_init(&cl->mu);
-  gpr_cv_init(&cl->done_cv);
   cl->done = 0;
 }
 
 /* Called when a client upload session is ready to shutdown. */
 static void client_session_shutdown_cb(void *arg /*client*/, int success) {
   client *cl = arg;
-  grpc_fd_orphan(cl->em_fd, NULL, NULL);
+  grpc_fd_orphan(cl->em_fd, NULL, "c");
   cl->done = 1;
-  gpr_cv_signal(&cl->done_cv);
+  grpc_pollset_kick(&g_pollset);
 }
 
 /* Write as much as possible, then register notify_on_write. */
@@ -302,9 +297,9 @@ static void client_session_write(void *arg, /*client*/
   ssize_t write_once = 0;
 
   if (!success) {
-    gpr_mu_lock(&cl->mu);
+    gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
     client_session_shutdown_cb(arg, 1);
-    gpr_mu_unlock(&cl->mu);
+    gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
     return;
   }
 
@@ -314,7 +309,7 @@ static void client_session_write(void *arg, /*client*/
   } while (write_once > 0);
 
   if (errno == EAGAIN) {
-    gpr_mu_lock(&cl->mu);
+    gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
     if (cl->client_write_cnt < CLIENT_TOTAL_WRITE_CNT) {
       cl->write_closure.cb = client_session_write;
       cl->write_closure.cb_arg = cl;
@@ -323,7 +318,7 @@ static void client_session_write(void *arg, /*client*/
     } else {
       client_session_shutdown_cb(arg, 1);
     }
-    gpr_mu_unlock(&cl->mu);
+    gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
   } else {
     gpr_log(GPR_ERROR, "unknown errno %s", strerror(errno));
     abort();
@@ -352,18 +347,18 @@ static void client_start(client *cl, int port) {
   }
 
   cl->em_fd = grpc_fd_create(fd, "client");
+  grpc_pollset_add_fd(&g_pollset, cl->em_fd);
 
   client_session_write(cl, 1);
 }
 
 /* Wait for the signal to shutdown a client. */
 static void client_wait_and_shutdown(client *cl) {
-  gpr_mu_lock(&cl->mu);
-  while (!cl->done) gpr_cv_wait(&cl->done_cv, &cl->mu, gpr_inf_future);
-  gpr_mu_unlock(&cl->mu);
-
-  gpr_mu_destroy(&cl->mu);
-  gpr_cv_destroy(&cl->done_cv);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  while (!cl->done) {
+    grpc_pollset_work(&g_pollset, gpr_inf_future);
+  }
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 /* Test grpc_fd. Start an upload server and client, upload a stream of
@@ -385,38 +380,29 @@ static void test_grpc_fd(void) {
 }
 
 typedef struct fd_change_data {
-  gpr_mu mu;
-  gpr_cv cv;
   void (*cb_that_ran)(void *, int success);
 } fd_change_data;
 
-void init_change_data(fd_change_data *fdc) {
-  gpr_mu_init(&fdc->mu);
-  gpr_cv_init(&fdc->cv);
-  fdc->cb_that_ran = NULL;
-}
+void init_change_data(fd_change_data *fdc) { fdc->cb_that_ran = NULL; }
 
-void destroy_change_data(fd_change_data *fdc) {
-  gpr_mu_destroy(&fdc->mu);
-  gpr_cv_destroy(&fdc->cv);
-}
+void destroy_change_data(fd_change_data *fdc) {}
 
 static void first_read_callback(void *arg /* fd_change_data */, int success) {
   fd_change_data *fdc = arg;
 
-  gpr_mu_lock(&fdc->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   fdc->cb_that_ran = first_read_callback;
-  gpr_cv_signal(&fdc->cv);
-  gpr_mu_unlock(&fdc->mu);
+  grpc_pollset_kick(&g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 static void second_read_callback(void *arg /* fd_change_data */, int success) {
   fd_change_data *fdc = arg;
 
-  gpr_mu_lock(&fdc->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   fdc->cb_that_ran = second_read_callback;
-  gpr_cv_signal(&fdc->cv);
-  gpr_mu_unlock(&fdc->mu);
+  grpc_pollset_kick(&g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 /* Test that changing the callback we use for notify_on_read actually works.
@@ -448,6 +434,7 @@ static void test_grpc_fd_change(void) {
   GPR_ASSERT(fcntl(sv[1], F_SETFL, flags | O_NONBLOCK) == 0);
 
   em_fd = grpc_fd_create(sv[0], "test_grpc_fd_change");
+  grpc_pollset_add_fd(&g_pollset, em_fd);
 
   /* Register the first callback, then make its FD readable */
   grpc_fd_notify_on_read(em_fd, &first_closure);
@@ -456,12 +443,12 @@ static void test_grpc_fd_change(void) {
   GPR_ASSERT(result == 1);
 
   /* And now wait for it to run. */
-  gpr_mu_lock(&a.mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (a.cb_that_ran == NULL) {
-    gpr_cv_wait(&a.cv, &a.mu, gpr_inf_future);
+    grpc_pollset_work(&g_pollset, gpr_inf_future);
   }
   GPR_ASSERT(a.cb_that_ran == first_read_callback);
-  gpr_mu_unlock(&a.mu);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 
   /* And drain the socket so we can generate a new read edge */
   result = read(sv[0], &data, 1);
@@ -474,25 +461,29 @@ static void test_grpc_fd_change(void) {
   result = write(sv[1], &data, 1);
   GPR_ASSERT(result == 1);
 
-  gpr_mu_lock(&b.mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   while (b.cb_that_ran == NULL) {
-    gpr_cv_wait(&b.cv, &b.mu, gpr_inf_future);
+    grpc_pollset_work(&g_pollset, gpr_inf_future);
   }
   /* Except now we verify that second_read_callback ran instead */
   GPR_ASSERT(b.cb_that_ran == second_read_callback);
-  gpr_mu_unlock(&b.mu);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 
-  grpc_fd_orphan(em_fd, NULL, NULL);
+  grpc_fd_orphan(em_fd, NULL, "d");
   destroy_change_data(&a);
   destroy_change_data(&b);
   close(sv[1]);
 }
 
+static void destroy_pollset(void *p) { grpc_pollset_destroy(p); }
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   grpc_iomgr_init();
+  grpc_pollset_init(&g_pollset);
   test_grpc_fd();
   test_grpc_fd_change();
+  grpc_pollset_shutdown(&g_pollset, destroy_pollset, &g_pollset);
   grpc_iomgr_shutdown();
   return 0;
 }
diff --git a/test/core/iomgr/poll_kick_posix_test.c b/test/core/iomgr/poll_kick_posix_test.c
index 2c5b444d3a..3aa6807806 100644
--- a/test/core/iomgr/poll_kick_posix_test.c
+++ b/test/core/iomgr/poll_kick_posix_test.c
@@ -31,7 +31,7 @@
  *
  */
 
-#include "src/core/iomgr/pollset_kick.h"
+#include "src/core/iomgr/pollset_kick_posix.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -45,31 +45,31 @@ static void test_allocation(void) {
 
 static void test_non_kick(void) {
   grpc_pollset_kick_state state;
-  int fd;
+  grpc_kick_fd_info *kfd;
 
   grpc_pollset_kick_init(&state);
-  fd = grpc_pollset_kick_pre_poll(&state);
-  GPR_ASSERT(fd >= 0);
+  kfd = grpc_pollset_kick_pre_poll(&state);
+  GPR_ASSERT(kfd != NULL);
 
-  grpc_pollset_kick_post_poll(&state);
+  grpc_pollset_kick_post_poll(&state, kfd);
   grpc_pollset_kick_destroy(&state);
 }
 
 static void test_basic_kick(void) {
   /* Kicked during poll */
   grpc_pollset_kick_state state;
-  int fd;
+  grpc_kick_fd_info *kfd;
   grpc_pollset_kick_init(&state);
 
-  fd = grpc_pollset_kick_pre_poll(&state);
-  GPR_ASSERT(fd >= 0);
+  kfd = grpc_pollset_kick_pre_poll(&state);
+  GPR_ASSERT(kfd != NULL);
 
   grpc_pollset_kick_kick(&state);
 
   /* Now hypothetically we polled and found that we were kicked */
-  grpc_pollset_kick_consume(&state);
+  grpc_pollset_kick_consume(&state, kfd);
 
-  grpc_pollset_kick_post_poll(&state);
+  grpc_pollset_kick_post_poll(&state, kfd);
 
   grpc_pollset_kick_destroy(&state);
 }
@@ -77,13 +77,13 @@ static void test_basic_kick(void) {
 static void test_non_poll_kick(void) {
   /* Kick before entering poll */
   grpc_pollset_kick_state state;
-  int fd;
+  grpc_kick_fd_info *kfd;
 
   grpc_pollset_kick_init(&state);
 
   grpc_pollset_kick_kick(&state);
-  fd = grpc_pollset_kick_pre_poll(&state);
-  GPR_ASSERT(fd < 0);
+  kfd = grpc_pollset_kick_pre_poll(&state);
+  GPR_ASSERT(kfd == NULL);
   grpc_pollset_kick_destroy(&state);
 }
 
@@ -92,20 +92,20 @@ static void test_non_poll_kick(void) {
 static void test_over_free(void) {
   /* Check high watermark pipe free logic */
   int i;
-  struct grpc_pollset_kick_state *kick_state =
-      gpr_malloc(sizeof(grpc_pollset_kick_state) * GRPC_MAX_CACHED_PIPES);
+  grpc_kick_fd_info **kfds =
+      gpr_malloc(sizeof(grpc_kick_fd_info *) * GRPC_MAX_CACHED_PIPES);
+  grpc_pollset_kick_state state;
+  grpc_pollset_kick_init(&state);
   for (i = 0; i < GRPC_MAX_CACHED_PIPES; ++i) {
-    int fd;
-    grpc_pollset_kick_init(&kick_state[i]);
-    fd = grpc_pollset_kick_pre_poll(&kick_state[i]);
-    GPR_ASSERT(fd >= 0);
+    kfds[i] = grpc_pollset_kick_pre_poll(&state);
+    GPR_ASSERT(kfds[i] != NULL);
   }
 
   for (i = 0; i < GRPC_MAX_CACHED_PIPES; ++i) {
-    grpc_pollset_kick_post_poll(&kick_state[i]);
-    grpc_pollset_kick_destroy(&kick_state[i]);
+    grpc_pollset_kick_post_poll(&state, kfds[i]);
   }
-  gpr_free(kick_state);
+  grpc_pollset_kick_destroy(&state);
+  gpr_free(kfds);
 }
 
 static void run_tests(void) {
diff --git a/test/core/iomgr/tcp_client_posix_test.c b/test/core/iomgr/tcp_client_posix_test.c
index 3c4d8fed4f..b673c032b2 100644
--- a/test/core/iomgr/tcp_client_posix_test.c
+++ b/test/core/iomgr/tcp_client_posix_test.c
@@ -45,20 +45,31 @@
 #include <grpc/support/time.h>
 #include "test/core/util/test_config.h"
 
+static grpc_pollset_set g_pollset_set;
+static grpc_pollset g_pollset;
+static int g_connections_complete = 0;
+
 static gpr_timespec test_deadline(void) {
   return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
 }
 
+static void finish_connection() {
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  g_connections_complete++;
+  grpc_pollset_kick(&g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
+}
+
 static void must_succeed(void *arg, grpc_endpoint *tcp) {
   GPR_ASSERT(tcp);
   grpc_endpoint_shutdown(tcp);
   grpc_endpoint_destroy(tcp);
-  gpr_event_set(arg, (void *)1);
+  finish_connection();
 }
 
 static void must_fail(void *arg, grpc_endpoint *tcp) {
   GPR_ASSERT(!tcp);
-  gpr_event_set(arg, (void *)1);
+  finish_connection();
 }
 
 void test_succeeds(void) {
@@ -66,9 +77,7 @@ void test_succeeds(void) {
   socklen_t addr_len = sizeof(addr);
   int svr_fd;
   int r;
-  gpr_event ev;
-
-  gpr_event_init(&ev);
+  int connections_complete_before;
 
   memset(&addr, 0, sizeof(addr));
   addr.sin_family = AF_INET;
@@ -79,10 +88,14 @@ void test_succeeds(void) {
   GPR_ASSERT(0 == bind(svr_fd, (struct sockaddr *)&addr, addr_len));
   GPR_ASSERT(0 == listen(svr_fd, 1));
 
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  connections_complete_before = g_connections_complete;
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
+
   /* connect to it */
   GPR_ASSERT(getsockname(svr_fd, (struct sockaddr *)&addr, &addr_len) == 0);
-  grpc_tcp_client_connect(must_succeed, &ev, (struct sockaddr *)&addr, addr_len,
-                          gpr_inf_future);
+  grpc_tcp_client_connect(must_succeed, NULL, &g_pollset_set,
+                          (struct sockaddr *)&addr, addr_len, gpr_inf_future);
 
   /* await the connection */
   do {
@@ -92,26 +105,39 @@ void test_succeeds(void) {
   GPR_ASSERT(r >= 0);
   close(r);
 
-  /* wait for the connection callback to finish */
-  GPR_ASSERT(gpr_event_wait(&ev, test_deadline()));
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+
+  while (g_connections_complete == connections_complete_before) {
+    grpc_pollset_work(&g_pollset, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5));
+  }
+
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 void test_fails(void) {
   struct sockaddr_in addr;
   socklen_t addr_len = sizeof(addr);
-  gpr_event ev;
-
-  gpr_event_init(&ev);
+  int connections_complete_before;
 
   memset(&addr, 0, sizeof(addr));
   addr.sin_family = AF_INET;
 
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  connections_complete_before = g_connections_complete;
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
+
   /* connect to a broken address */
-  grpc_tcp_client_connect(must_fail, &ev, (struct sockaddr *)&addr, addr_len,
-                          gpr_inf_future);
+  grpc_tcp_client_connect(must_fail, NULL, &g_pollset_set,
+                          (struct sockaddr *)&addr, addr_len, gpr_inf_future);
+
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
 
   /* wait for the connection callback to finish */
-  GPR_ASSERT(gpr_event_wait(&ev, test_deadline()));
+  while (g_connections_complete == connections_complete_before) {
+    grpc_pollset_work(&g_pollset, test_deadline());
+  }
+
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 void test_times_out(void) {
@@ -122,11 +148,9 @@ void test_times_out(void) {
   int client_fd[NUM_CLIENT_CONNECTS];
   int i;
   int r;
-  gpr_event ev;
+  int connections_complete_before;
   gpr_timespec connect_deadline;
 
-  gpr_event_init(&ev);
-
   memset(&addr, 0, sizeof(addr));
   addr.sin_family = AF_INET;
 
@@ -153,28 +177,50 @@ void test_times_out(void) {
 
   connect_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1);
 
-  grpc_tcp_client_connect(must_fail, &ev, (struct sockaddr *)&addr, addr_len,
-                          connect_deadline);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  connections_complete_before = g_connections_complete;
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
+
+  grpc_tcp_client_connect(must_fail, NULL, &g_pollset_set,
+                          (struct sockaddr *)&addr, addr_len, connect_deadline);
+
   /* Make sure the event doesn't trigger early */
-  GPR_ASSERT(!gpr_event_wait(&ev, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(500)));
-  /* Now wait until it should have triggered */
-  sleep(1);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  while (gpr_time_cmp(gpr_time_add(connect_deadline, gpr_time_from_seconds(2)),
+                      gpr_now()) > 0) {
+    int is_after_deadline = gpr_time_cmp(connect_deadline, gpr_now()) <= 0;
+    if (is_after_deadline &&
+        gpr_time_cmp(gpr_time_add(connect_deadline, gpr_time_from_seconds(1)),
+                     gpr_now()) > 0) {
+      /* allow some slack before insisting that things be done */
+    } else {
+      GPR_ASSERT(g_connections_complete ==
+                 connections_complete_before + is_after_deadline);
+    }
+    grpc_pollset_work(&g_pollset, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(10));
+  }
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 
-  /* wait for the connection callback to finish */
-  GPR_ASSERT(gpr_event_wait(&ev, test_deadline()));
   close(svr_fd);
   for (i = 0; i < NUM_CLIENT_CONNECTS; ++i) {
     close(client_fd[i]);
   }
 }
 
+static void destroy_pollset(void *p) { grpc_pollset_destroy(p); }
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   grpc_iomgr_init();
+  grpc_pollset_set_init(&g_pollset_set);
+  grpc_pollset_init(&g_pollset);
+  grpc_pollset_set_add_pollset(&g_pollset_set, &g_pollset);
   test_succeeds();
   gpr_log(GPR_ERROR, "End of first test");
   test_fails();
   test_times_out();
+  grpc_pollset_set_destroy(&g_pollset_set);
+  grpc_pollset_shutdown(&g_pollset, destroy_pollset, &g_pollset);
   grpc_iomgr_shutdown();
   return 0;
 }
diff --git a/test/core/iomgr/tcp_posix_test.c b/test/core/iomgr/tcp_posix_test.c
index 2cfcc8311c..a23c64928e 100644
--- a/test/core/iomgr/tcp_posix_test.c
+++ b/test/core/iomgr/tcp_posix_test.c
@@ -48,6 +48,8 @@
 #include "test/core/util/test_config.h"
 #include "test/core/iomgr/endpoint_tests.h"
 
+static grpc_pollset g_pollset;
+
 /*
    General test notes:
 
@@ -114,8 +116,6 @@ static size_t fill_socket_partial(int fd, size_t bytes) {
 
 struct read_socket_state {
   grpc_endpoint *ep;
-  gpr_mu mu;
-  gpr_cv cv;
   ssize_t read_bytes;
   ssize_t target_read_bytes;
 };
@@ -145,18 +145,18 @@ static void read_cb(void *user_data, gpr_slice *slices, size_t nslices,
 
   GPR_ASSERT(error == GRPC_ENDPOINT_CB_OK);
 
-  gpr_mu_lock(&state->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   current_data = state->read_bytes % 256;
   read_bytes = count_and_unref_slices(slices, nslices, &current_data);
   state->read_bytes += read_bytes;
   gpr_log(GPR_INFO, "Read %d bytes of %d", read_bytes,
           state->target_read_bytes);
   if (state->read_bytes >= state->target_read_bytes) {
-    gpr_cv_signal(&state->cv);
+    /* empty */
   } else {
     grpc_endpoint_notify_on_read(state->ep, read_cb, state);
   }
-  gpr_mu_unlock(&state->mu);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 /* Write to a socket, then read from it using the grpc_tcp API. */
@@ -173,31 +173,25 @@ static void read_test(ssize_t num_bytes, ssize_t slice_size) {
   create_sockets(sv);
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "read_test"), slice_size);
+  grpc_endpoint_add_to_pollset(ep, &g_pollset);
+
   written_bytes = fill_socket_partial(sv[0], num_bytes);
   gpr_log(GPR_INFO, "Wrote %d bytes", written_bytes);
 
-  gpr_mu_init(&state.mu);
-  gpr_cv_init(&state.cv);
   state.ep = ep;
   state.read_bytes = 0;
   state.target_read_bytes = written_bytes;
 
   grpc_endpoint_notify_on_read(ep, read_cb, &state);
 
-  gpr_mu_lock(&state.mu);
-  for (;;) {
-    GPR_ASSERT(gpr_cv_wait(&state.cv, &state.mu, deadline) == 0);
-    if (state.read_bytes >= state.target_read_bytes) {
-      break;
-    }
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  while (state.read_bytes < state.target_read_bytes) {
+    grpc_pollset_work(&g_pollset, deadline);
   }
   GPR_ASSERT(state.read_bytes == state.target_read_bytes);
-  gpr_mu_unlock(&state.mu);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 
   grpc_endpoint_destroy(ep);
-
-  gpr_mu_destroy(&state.mu);
-  gpr_cv_destroy(&state.cv);
 }
 
 /* Write to a socket until it fills up, then read from it using the grpc_tcp
@@ -214,37 +208,29 @@ static void large_read_test(ssize_t slice_size) {
   create_sockets(sv);
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "large_read_test"), slice_size);
+  grpc_endpoint_add_to_pollset(ep, &g_pollset);
+
   written_bytes = fill_socket(sv[0]);
   gpr_log(GPR_INFO, "Wrote %d bytes", written_bytes);
 
-  gpr_mu_init(&state.mu);
-  gpr_cv_init(&state.cv);
   state.ep = ep;
   state.read_bytes = 0;
   state.target_read_bytes = written_bytes;
 
   grpc_endpoint_notify_on_read(ep, read_cb, &state);
 
-  gpr_mu_lock(&state.mu);
-  for (;;) {
-    GPR_ASSERT(gpr_cv_wait(&state.cv, &state.mu, deadline) == 0);
-    if (state.read_bytes >= state.target_read_bytes) {
-      break;
-    }
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  while (state.read_bytes < state.target_read_bytes) {
+    grpc_pollset_work(&g_pollset, deadline);
   }
   GPR_ASSERT(state.read_bytes == state.target_read_bytes);
-  gpr_mu_unlock(&state.mu);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 
   grpc_endpoint_destroy(ep);
-
-  gpr_mu_destroy(&state.mu);
-  gpr_cv_destroy(&state.cv);
 }
 
 struct write_socket_state {
   grpc_endpoint *ep;
-  gpr_mu mu;
-  gpr_cv cv;
   int write_done;
 };
 
@@ -275,11 +261,11 @@ static void write_done(void *user_data /* write_socket_state */,
                        grpc_endpoint_cb_status error) {
   struct write_socket_state *state = (struct write_socket_state *)user_data;
   gpr_log(GPR_INFO, "Write done callback called");
-  gpr_mu_lock(&state->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
   gpr_log(GPR_INFO, "Signalling write done");
   state->write_done = 1;
-  gpr_cv_signal(&state->cv);
-  gpr_mu_unlock(&state->mu);
+  grpc_pollset_kick(&g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 void drain_socket_blocking(int fd, size_t num_bytes, size_t read_size) {
@@ -294,6 +280,9 @@ void drain_socket_blocking(int fd, size_t num_bytes, size_t read_size) {
   GPR_ASSERT(fcntl(fd, F_SETFL, flags & ~O_NONBLOCK) == 0);
 
   for (;;) {
+    gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+    grpc_pollset_work(&g_pollset, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(10));
+    gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
     do {
       bytes_read =
           read(fd, buf, bytes_left > read_size ? read_size : bytes_left);
@@ -352,9 +341,8 @@ static void write_test(ssize_t num_bytes, ssize_t slice_size) {
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "write_test"),
                        GRPC_TCP_DEFAULT_READ_SLICE_SIZE);
+  grpc_endpoint_add_to_pollset(ep, &g_pollset);
 
-  gpr_mu_init(&state.mu);
-  gpr_cv_init(&state.cv);
   state.ep = ep;
   state.write_done = 0;
 
@@ -367,19 +355,17 @@ static void write_test(ssize_t num_bytes, ssize_t slice_size) {
     GPR_ASSERT(read_bytes == num_bytes);
   } else {
     drain_socket_blocking(sv[0], num_bytes, num_bytes);
-    gpr_mu_lock(&state.mu);
+    gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
     for (;;) {
       if (state.write_done) {
         break;
       }
-      GPR_ASSERT(gpr_cv_wait(&state.cv, &state.mu, deadline) == 0);
+      grpc_pollset_work(&g_pollset, deadline);
     }
-    gpr_mu_unlock(&state.mu);
+    gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
   }
 
   grpc_endpoint_destroy(ep);
-  gpr_mu_destroy(&state.mu);
-  gpr_cv_destroy(&state.cv);
   gpr_free(slices);
 }
 
@@ -409,10 +395,10 @@ static void write_error_test(ssize_t num_bytes, ssize_t slice_size) {
 
   ep = grpc_tcp_create(grpc_fd_create(sv[1], "write_error_test"),
                        GRPC_TCP_DEFAULT_READ_SLICE_SIZE);
+  grpc_endpoint_add_to_pollset(ep, &g_pollset);
+
   close(sv[0]);
 
-  gpr_mu_init(&state.mu);
-  gpr_cv_init(&state.cv);
   state.ep = ep;
   state.write_done = 0;
 
@@ -425,20 +411,18 @@ static void write_error_test(ssize_t num_bytes, ssize_t slice_size) {
       break;
     case GRPC_ENDPOINT_WRITE_PENDING:
       grpc_endpoint_notify_on_read(ep, read_done_for_write_error, NULL);
-      gpr_mu_lock(&state.mu);
+      gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
       for (;;) {
         if (state.write_done) {
           break;
         }
-        GPR_ASSERT(gpr_cv_wait(&state.cv, &state.mu, deadline) == 0);
+        grpc_pollset_work(&g_pollset, deadline);
       }
-      gpr_mu_unlock(&state.mu);
+      gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
       break;
   }
 
   grpc_endpoint_destroy(ep);
-  gpr_mu_destroy(&state.mu);
-  gpr_cv_destroy(&state.cv);
   free(slices);
 }
 
@@ -479,6 +463,8 @@ static grpc_endpoint_test_fixture create_fixture_tcp_socketpair(
       grpc_tcp_create(grpc_fd_create(sv[0], "fixture:client"), slice_size);
   f.server_ep =
       grpc_tcp_create(grpc_fd_create(sv[1], "fixture:server"), slice_size);
+  grpc_endpoint_add_to_pollset(f.client_ep, &g_pollset);
+  grpc_endpoint_add_to_pollset(f.server_ep, &g_pollset);
 
   return f;
 }
@@ -487,11 +473,15 @@ static grpc_endpoint_test_config configs[] = {
     {"tcp/tcp_socketpair", create_fixture_tcp_socketpair, clean_up},
 };
 
+static void destroy_pollset(void *p) { grpc_pollset_destroy(p); }
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   grpc_init();
+  grpc_pollset_init(&g_pollset);
   run_tests();
-  grpc_endpoint_tests(configs[0]);
+  grpc_endpoint_tests(configs[0], &g_pollset);
+  grpc_pollset_shutdown(&g_pollset, destroy_pollset, &g_pollset);
   grpc_shutdown();
 
   return 0;
diff --git a/test/core/iomgr/tcp_server_posix_test.c b/test/core/iomgr/tcp_server_posix_test.c
index 328b19f68a..fb262711c0 100644
--- a/test/core/iomgr/tcp_server_posix_test.c
+++ b/test/core/iomgr/tcp_server_posix_test.c
@@ -45,18 +45,17 @@
 
 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", #x)
 
-static gpr_mu mu;
-static gpr_cv cv;
-static int nconnects = 0;
+static grpc_pollset g_pollset;
+static int g_nconnects = 0;
 
 static void on_connect(void *arg, grpc_endpoint *tcp) {
   grpc_endpoint_shutdown(tcp);
   grpc_endpoint_destroy(tcp);
 
-  gpr_mu_lock(&mu);
-  nconnects++;
-  gpr_cv_broadcast(&cv);
-  gpr_mu_unlock(&mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
+  g_nconnects++;
+  grpc_pollset_kick(&g_pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 }
 
 static void test_no_op(void) {
@@ -106,12 +105,11 @@ static void test_connect(int n) {
   grpc_tcp_server *s = grpc_tcp_server_create();
   int nconnects_before;
   gpr_timespec deadline;
+  grpc_pollset *pollsets[1];
   int i;
   LOG_TEST("test_connect");
   gpr_log(GPR_INFO, "clients=%d", n);
 
-  gpr_mu_lock(&mu);
-
   memset(&addr, 0, sizeof(addr));
   addr.ss_family = AF_INET;
   GPR_ASSERT(grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, addr_len));
@@ -121,38 +119,42 @@ static void test_connect(int n) {
   GPR_ASSERT(getsockname(svrfd, (struct sockaddr *)&addr, &addr_len) == 0);
   GPR_ASSERT(addr_len <= sizeof(addr));
 
-  grpc_tcp_server_start(s, NULL, 0, on_connect, NULL);
+  pollsets[0] = &g_pollset;
+  grpc_tcp_server_start(s, pollsets, 1, on_connect, NULL);
+
+  gpr_mu_lock(GRPC_POLLSET_MU(&g_pollset));
 
   for (i = 0; i < n; i++) {
-    deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1);
+    deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(4000);
 
-    nconnects_before = nconnects;
+    nconnects_before = g_nconnects;
     clifd = socket(addr.ss_family, SOCK_STREAM, 0);
     GPR_ASSERT(clifd >= 0);
+    gpr_log(GPR_DEBUG, "start connect");
     GPR_ASSERT(connect(clifd, (struct sockaddr *)&addr, addr_len) == 0);
 
-    while (nconnects == nconnects_before) {
-      GPR_ASSERT(gpr_cv_wait(&cv, &mu, deadline) == 0);
+    gpr_log(GPR_DEBUG, "wait");
+    while (g_nconnects == nconnects_before &&
+           gpr_time_cmp(deadline, gpr_now()) > 0) {
+      grpc_pollset_work(&g_pollset, deadline);
     }
+    gpr_log(GPR_DEBUG, "wait done");
 
-    GPR_ASSERT(nconnects == nconnects_before + 1);
+    GPR_ASSERT(g_nconnects == nconnects_before + 1);
     close(clifd);
-
-    if (i != n - 1) {
-      sleep(1);
-    }
   }
 
-  gpr_mu_unlock(&mu);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&g_pollset));
 
   grpc_tcp_server_destroy(s, NULL, NULL);
 }
 
+static void destroy_pollset(void *p) { grpc_pollset_destroy(p); }
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   grpc_iomgr_init();
-  gpr_mu_init(&mu);
-  gpr_cv_init(&cv);
+  grpc_pollset_init(&g_pollset);
 
   test_no_op();
   test_no_op_with_start();
@@ -161,8 +163,7 @@ int main(int argc, char **argv) {
   test_connect(1);
   test_connect(10);
 
+  grpc_pollset_shutdown(&g_pollset, destroy_pollset, &g_pollset);
   grpc_iomgr_shutdown();
-  gpr_mu_destroy(&mu);
-  gpr_cv_destroy(&cv);
   return 0;
 }
diff --git a/test/core/json/json_rewrite_test.c b/test/core/json/json_rewrite_test.c
index ec6deebe76..f5859322ea 100644
--- a/test/core/json/json_rewrite_test.c
+++ b/test/core/json/json_rewrite_test.c
@@ -64,6 +64,11 @@ typedef struct json_reader_userdata {
 static void json_writer_output_char(void* userdata, char c) {
   json_writer_userdata* state = userdata;
   int cmp = fgetc(state->cmp);
+
+  /* treat CRLF as LF */
+  if (cmp == '\r' && c == '\n') {
+    cmp = fgetc(state->cmp);
+  }
   GPR_ASSERT(cmp == c);
 }
 
diff --git a/test/core/security/auth_context_test.c b/test/core/security/auth_context_test.c
index 2fb0c01f6f..2b12551a06 100644
--- a/test/core/security/auth_context_test.c
+++ b/test/core/security/auth_context_test.c
@@ -52,7 +52,7 @@ static void test_empty_context(void) {
   GPR_ASSERT(grpc_auth_property_iterator_next(&it) == NULL);
   it = grpc_auth_context_find_properties_by_name(ctx, "foo");
   GPR_ASSERT(grpc_auth_property_iterator_next(&it) == NULL);
-  grpc_auth_context_unref(ctx);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
 }
 
 static void test_simple_context(void) {
@@ -86,7 +86,7 @@ static void test_simple_context(void) {
   GPR_ASSERT(grpc_auth_property_iterator_next(&it) == &ctx->properties[1]);
   GPR_ASSERT(grpc_auth_property_iterator_next(&it) == NULL);
 
-  grpc_auth_context_unref(ctx);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
 }
 
 static void test_chained_context(void) {
@@ -96,7 +96,7 @@ static void test_chained_context(void) {
   size_t i;
 
   gpr_log(GPR_INFO, "test_chained_context");
-  grpc_auth_context_unref(chained);
+  GRPC_AUTH_CONTEXT_UNREF(chained, "chained");
   chained->properties[0] =
       grpc_auth_property_init_from_cstring("name", "padapo");
   chained->properties[1] = grpc_auth_property_init_from_cstring("foo", "baz");
@@ -129,7 +129,7 @@ static void test_chained_context(void) {
   GPR_ASSERT(grpc_auth_property_iterator_next(&it) == &chained->properties[0]);
   GPR_ASSERT(grpc_auth_property_iterator_next(&it) == NULL);
 
-  grpc_auth_context_unref(ctx);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
 }
 
 
diff --git a/test/core/security/base64_test.c b/test/core/security/base64_test.c
index a922896bc3..f8b7ebf554 100644
--- a/test/core/security/base64_test.c
+++ b/test/core/security/base64_test.c
@@ -169,6 +169,43 @@ static void test_rfc4648_test_vectors(void) {
   gpr_free(b64);
 }
 
+static void test_unpadded_decode(void) {
+  gpr_slice decoded;
+
+  decoded = grpc_base64_decode("Zm9vYmFy", 0);
+  GPR_ASSERT(!GPR_SLICE_IS_EMPTY(decoded));
+  GPR_ASSERT(gpr_slice_str_cmp(decoded, "foobar") == 0);
+  gpr_slice_unref(decoded);
+
+  decoded = grpc_base64_decode("Zm9vYmE", 0);
+  GPR_ASSERT(!GPR_SLICE_IS_EMPTY(decoded));
+  GPR_ASSERT(gpr_slice_str_cmp(decoded, "fooba") == 0);
+  gpr_slice_unref(decoded);
+
+  decoded = grpc_base64_decode("Zm9vYg", 0);
+  GPR_ASSERT(!GPR_SLICE_IS_EMPTY(decoded));
+  GPR_ASSERT(gpr_slice_str_cmp(decoded, "foob") == 0);
+  gpr_slice_unref(decoded);
+
+  decoded = grpc_base64_decode("Zm9v", 0);
+  GPR_ASSERT(!GPR_SLICE_IS_EMPTY(decoded));
+  GPR_ASSERT(gpr_slice_str_cmp(decoded, "foo") == 0);
+  gpr_slice_unref(decoded);
+
+  decoded = grpc_base64_decode("Zm8", 0);
+  GPR_ASSERT(!GPR_SLICE_IS_EMPTY(decoded));
+  GPR_ASSERT(gpr_slice_str_cmp(decoded, "fo") == 0);
+  gpr_slice_unref(decoded);
+
+  decoded = grpc_base64_decode("Zg", 0);
+  GPR_ASSERT(!GPR_SLICE_IS_EMPTY(decoded));
+  GPR_ASSERT(gpr_slice_str_cmp(decoded, "f") == 0);
+  gpr_slice_unref(decoded);
+
+  decoded = grpc_base64_decode("", 0);
+  GPR_ASSERT(GPR_SLICE_IS_EMPTY(decoded));
+}
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   test_simple_encode_decode_b64_no_multiline();
@@ -181,5 +218,6 @@ int main(int argc, char **argv) {
   test_full_range_encode_decode_b64_urlsafe_multiline();
   test_url_safe_unsafe_mismtach_failure();
   test_rfc4648_test_vectors();
+  test_unpadded_decode();
   return 0;
 }
diff --git a/test/core/security/credentials_test.c b/test/core/security/credentials_test.c
index 69ec680c18..4253be6b07 100644
--- a/test/core/security/credentials_test.c
+++ b/test/core/security/credentials_test.c
@@ -210,8 +210,7 @@ static void test_oauth2_token_fetcher_creds_parsing_ok(void) {
   grpc_httpcli_response response =
       http_response(200, valid_oauth2_json_response);
   GPR_ASSERT(grpc_oauth2_token_fetcher_credentials_parse_server_response(
-                 &response, &token_md, &token_lifetime) ==
-             GRPC_CREDENTIALS_OK);
+                 &response, &token_md, &token_lifetime) == GRPC_CREDENTIALS_OK);
   GPR_ASSERT(token_lifetime.tv_sec == 3599);
   GPR_ASSERT(token_lifetime.tv_nsec == 0);
   GPR_ASSERT(token_md->num_entries == 1);
@@ -328,7 +327,7 @@ static void test_iam_creds(void) {
       test_iam_authorization_token, test_iam_authority_selector);
   GPR_ASSERT(grpc_credentials_has_request_metadata(creds));
   GPR_ASSERT(grpc_credentials_has_request_metadata_only(creds));
-  grpc_credentials_get_request_metadata(creds, test_service_url,
+  grpc_credentials_get_request_metadata(creds, NULL, test_service_url,
                                         check_iam_metadata, creds);
 }
 
@@ -354,8 +353,8 @@ static void test_ssl_oauth2_composite_creds(void) {
       grpc_composite_credentials_create(ssl_creds, oauth2_creds);
   grpc_credentials_unref(ssl_creds);
   grpc_credentials_unref(oauth2_creds);
-  GPR_ASSERT(strcmp(composite_creds->type,
-                    GRPC_CREDENTIALS_TYPE_COMPOSITE) == 0);
+  GPR_ASSERT(strcmp(composite_creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE) ==
+             0);
   GPR_ASSERT(grpc_credentials_has_request_metadata(composite_creds));
   GPR_ASSERT(!grpc_credentials_has_request_metadata_only(composite_creds));
   creds_array = grpc_composite_credentials_get_credentials(composite_creds);
@@ -364,14 +363,13 @@ static void test_ssl_oauth2_composite_creds(void) {
                     GRPC_CREDENTIALS_TYPE_SSL) == 0);
   GPR_ASSERT(strcmp(creds_array->creds_array[1]->type,
                     GRPC_CREDENTIALS_TYPE_OAUTH2) == 0);
-  grpc_credentials_get_request_metadata(composite_creds, test_service_url,
+  grpc_credentials_get_request_metadata(composite_creds, NULL, test_service_url,
                                         check_ssl_oauth2_composite_metadata,
                                         composite_creds);
 }
 
 void test_ssl_fake_transport_security_composite_creds_failure(void) {
-  grpc_credentials *ssl_creds =
-      grpc_ssl_credentials_create(NULL, NULL);
+  grpc_credentials *ssl_creds = grpc_ssl_credentials_create(NULL, NULL);
   grpc_credentials *fake_transport_security_creds =
       grpc_fake_transport_security_credentials_create();
 
@@ -412,8 +410,8 @@ static void test_ssl_oauth2_iam_composite_creds(void) {
   grpc_credentials_unref(oauth2_creds);
   grpc_credentials_unref(aux_creds);
   grpc_credentials_unref(iam_creds);
-  GPR_ASSERT(strcmp(composite_creds->type,
-                    GRPC_CREDENTIALS_TYPE_COMPOSITE) == 0);
+  GPR_ASSERT(strcmp(composite_creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE) ==
+             0);
   GPR_ASSERT(grpc_credentials_has_request_metadata(composite_creds));
   GPR_ASSERT(!grpc_credentials_has_request_metadata_only(composite_creds));
   creds_array = grpc_composite_credentials_get_credentials(composite_creds);
@@ -424,7 +422,7 @@ static void test_ssl_oauth2_iam_composite_creds(void) {
                     GRPC_CREDENTIALS_TYPE_OAUTH2) == 0);
   GPR_ASSERT(strcmp(creds_array->creds_array[2]->type,
                     GRPC_CREDENTIALS_TYPE_IAM) == 0);
-  grpc_credentials_get_request_metadata(composite_creds, test_service_url,
+  grpc_credentials_get_request_metadata(composite_creds, NULL, test_service_url,
                                         check_ssl_oauth2_iam_composite_metadata,
                                         composite_creds);
 }
@@ -455,9 +453,10 @@ static void validate_compute_engine_http_request(
     const grpc_httpcli_request *request) {
   GPR_ASSERT(!request->use_ssl);
   GPR_ASSERT(strcmp(request->host, "metadata") == 0);
-  GPR_ASSERT(strcmp(request->path,
-             "/computeMetadata/v1/instance/service-accounts/default/token")
-             == 0);
+  GPR_ASSERT(
+      strcmp(request->path,
+             "/computeMetadata/v1/instance/service-accounts/default/token") ==
+      0);
   GPR_ASSERT(request->hdr_count == 1);
   GPR_ASSERT(strcmp(request->hdrs[0].key, "Metadata-Flavor") == 0);
   GPR_ASSERT(strcmp(request->hdrs[0].value, "Google") == 0);
@@ -506,16 +505,16 @@ static void test_compute_engine_creds_success(void) {
   /* First request: http get should be called. */
   grpc_httpcli_set_override(compute_engine_httpcli_get_success_override,
                             httpcli_post_should_not_be_called);
-  grpc_credentials_get_request_metadata(compute_engine_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_success,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      compute_engine_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_success, (void *)test_user_data);
 
   /* Second request: the cached token should be served directly. */
   grpc_httpcli_set_override(httpcli_get_should_not_be_called,
                             httpcli_post_should_not_be_called);
-  grpc_credentials_get_request_metadata(compute_engine_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_success,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      compute_engine_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_success, (void *)test_user_data);
 
   grpc_credentials_unref(compute_engine_creds);
   grpc_httpcli_set_override(NULL, NULL);
@@ -528,9 +527,9 @@ static void test_compute_engine_creds_failure(void) {
                             httpcli_post_should_not_be_called);
   GPR_ASSERT(grpc_credentials_has_request_metadata(compute_engine_creds));
   GPR_ASSERT(grpc_credentials_has_request_metadata_only(compute_engine_creds));
-  grpc_credentials_get_request_metadata(compute_engine_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_failure,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      compute_engine_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_failure, (void *)test_user_data);
   grpc_credentials_unref(compute_engine_creds);
   grpc_httpcli_set_override(NULL, NULL);
 }
@@ -553,8 +552,8 @@ static void validate_refresh_token_http_request(
   GPR_ASSERT(strcmp(request->path, GRPC_GOOGLE_OAUTH2_SERVICE_TOKEN_PATH) == 0);
   GPR_ASSERT(request->hdr_count == 1);
   GPR_ASSERT(strcmp(request->hdrs[0].key, "Content-Type") == 0);
-  GPR_ASSERT(strcmp(request->hdrs[0].value,
-                    "application/x-www-form-urlencoded") == 0);
+  GPR_ASSERT(
+      strcmp(request->hdrs[0].value, "application/x-www-form-urlencoded") == 0);
 }
 
 static int refresh_token_httpcli_post_success(
@@ -587,16 +586,16 @@ static void test_refresh_token_creds_success(void) {
   /* First request: http get should be called. */
   grpc_httpcli_set_override(httpcli_get_should_not_be_called,
                             refresh_token_httpcli_post_success);
-  grpc_credentials_get_request_metadata(refresh_token_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_success,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      refresh_token_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_success, (void *)test_user_data);
 
   /* Second request: the cached token should be served directly. */
   grpc_httpcli_set_override(httpcli_get_should_not_be_called,
                             httpcli_post_should_not_be_called);
-  grpc_credentials_get_request_metadata(refresh_token_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_success,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      refresh_token_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_success, (void *)test_user_data);
 
   grpc_credentials_unref(refresh_token_creds);
   grpc_httpcli_set_override(NULL, NULL);
@@ -609,9 +608,9 @@ static void test_refresh_token_creds_failure(void) {
                             refresh_token_httpcli_post_failure);
   GPR_ASSERT(grpc_credentials_has_request_metadata(refresh_token_creds));
   GPR_ASSERT(grpc_credentials_has_request_metadata_only(refresh_token_creds));
-  grpc_credentials_get_request_metadata(refresh_token_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_failure,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      refresh_token_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_failure, (void *)test_user_data);
   grpc_credentials_unref(refresh_token_creds);
   grpc_httpcli_set_override(NULL, NULL);
 }
@@ -667,8 +666,8 @@ static void validate_service_account_http_request(
   char *expected_body = NULL;
   GPR_ASSERT(body != NULL);
   GPR_ASSERT(body_size != 0);
-  gpr_asprintf(&expected_body, "%s%s",
-               GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX, test_signed_jwt);
+  gpr_asprintf(&expected_body, "%s%s", GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX,
+               test_signed_jwt);
   GPR_ASSERT(strlen(expected_body) == body_size);
   GPR_ASSERT(memcmp(expected_body, body, body_size) == 0);
   gpr_free(expected_body);
@@ -677,8 +676,8 @@ static void validate_service_account_http_request(
   GPR_ASSERT(strcmp(request->path, GRPC_GOOGLE_OAUTH2_SERVICE_TOKEN_PATH) == 0);
   GPR_ASSERT(request->hdr_count == 1);
   GPR_ASSERT(strcmp(request->hdrs[0].key, "Content-Type") == 0);
-  GPR_ASSERT(strcmp(request->hdrs[0].value,
-                    "application/x-www-form-urlencoded") == 0);
+  GPR_ASSERT(
+      strcmp(request->hdrs[0].value, "application/x-www-form-urlencoded") == 0);
 }
 
 static int service_account_httpcli_post_success(
@@ -714,18 +713,18 @@ static void test_service_account_creds_success(void) {
   grpc_jwt_encode_and_sign_set_override(encode_and_sign_jwt_success);
   grpc_httpcli_set_override(httpcli_get_should_not_be_called,
                             service_account_httpcli_post_success);
-  grpc_credentials_get_request_metadata(service_account_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_success,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      service_account_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_success, (void *)test_user_data);
 
   /* Second request: the cached token should be served directly. */
   grpc_jwt_encode_and_sign_set_override(
       encode_and_sign_jwt_should_not_be_called);
   grpc_httpcli_set_override(httpcli_get_should_not_be_called,
                             httpcli_post_should_not_be_called);
-  grpc_credentials_get_request_metadata(service_account_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_success,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      service_account_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_success, (void *)test_user_data);
 
   gpr_free(json_key_string);
   grpc_credentials_unref(service_account_creds);
@@ -744,9 +743,9 @@ static void test_service_account_creds_http_failure(void) {
   grpc_jwt_encode_and_sign_set_override(encode_and_sign_jwt_success);
   grpc_httpcli_set_override(httpcli_get_should_not_be_called,
                             service_account_httpcli_post_failure);
-  grpc_credentials_get_request_metadata(service_account_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_failure,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      service_account_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_failure, (void *)test_user_data);
 
   gpr_free(json_key_string);
   grpc_credentials_unref(service_account_creds);
@@ -764,9 +763,9 @@ static void test_service_account_creds_signing_failure(void) {
   grpc_jwt_encode_and_sign_set_override(encode_and_sign_jwt_failure);
   grpc_httpcli_set_override(httpcli_get_should_not_be_called,
                             httpcli_post_should_not_be_called);
-  grpc_credentials_get_request_metadata(service_account_creds, test_service_url,
-                                        on_oauth2_creds_get_metadata_failure,
-                                        (void *)test_user_data);
+  grpc_credentials_get_request_metadata(
+      service_account_creds, NULL, test_service_url,
+      on_oauth2_creds_get_metadata_failure, (void *)test_user_data);
 
   gpr_free(json_key_string);
   grpc_credentials_unref(service_account_creds);
@@ -808,21 +807,21 @@ static void test_jwt_creds_success(void) {
 
   /* First request: jwt_encode_and_sign should be called. */
   grpc_jwt_encode_and_sign_set_override(encode_and_sign_jwt_success);
-  grpc_credentials_get_request_metadata(jwt_creds, test_service_url,
+  grpc_credentials_get_request_metadata(jwt_creds, NULL, test_service_url,
                                         on_jwt_creds_get_metadata_success,
                                         (void *)test_user_data);
 
   /* Second request: the cached token should be served directly. */
   grpc_jwt_encode_and_sign_set_override(
       encode_and_sign_jwt_should_not_be_called);
-  grpc_credentials_get_request_metadata(jwt_creds, test_service_url,
+  grpc_credentials_get_request_metadata(jwt_creds, NULL, test_service_url,
                                         on_jwt_creds_get_metadata_success,
                                         (void *)test_user_data);
 
   /* Third request: Different service url so jwt_encode_and_sign should be
      called again (no caching). */
   grpc_jwt_encode_and_sign_set_override(encode_and_sign_jwt_success);
-  grpc_credentials_get_request_metadata(jwt_creds, other_test_service_url,
+  grpc_credentials_get_request_metadata(jwt_creds, NULL, other_test_service_url,
                                         on_jwt_creds_get_metadata_success,
                                         (void *)test_user_data);
 
@@ -839,7 +838,7 @@ static void test_jwt_creds_signing_failure(void) {
   GPR_ASSERT(grpc_credentials_has_request_metadata_only(jwt_creds));
 
   grpc_jwt_encode_and_sign_set_override(encode_and_sign_jwt_failure);
-  grpc_credentials_get_request_metadata(jwt_creds, test_service_url,
+  grpc_credentials_get_request_metadata(jwt_creds, NULL, test_service_url,
                                         on_jwt_creds_get_metadata_failure,
                                         (void *)test_user_data);
 
diff --git a/test/core/security/fetch_oauth2.c b/test/core/security/fetch_oauth2.c
index 3202df3328..767f724b62 100644
--- a/test/core/security/fetch_oauth2.c
+++ b/test/core/security/fetch_oauth2.c
@@ -46,8 +46,7 @@
 #include "src/core/support/file.h"
 
 typedef struct {
-  gpr_cv cv;
-  gpr_mu mu;
+  grpc_pollset pollset;
   int is_done;
 } synchronizer;
 
@@ -69,10 +68,10 @@ static void on_oauth2_response(void *user_data,
     printf("Got token: %s.\n", token);
     gpr_free(token);
   }
-  gpr_mu_lock(&sync->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&sync->pollset));
   sync->is_done = 1;
-  gpr_mu_unlock(&sync->mu);
-  gpr_cv_signal(&sync->cv);
+  grpc_pollset_kick(&sync->pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&sync->pollset));
 }
 
 static grpc_credentials *create_service_account_creds(
@@ -176,18 +175,16 @@ int main(int argc, char **argv) {
   }
   GPR_ASSERT(creds != NULL);
 
-  gpr_mu_init(&sync.mu);
-  gpr_cv_init(&sync.cv);
+  grpc_pollset_init(&sync.pollset);
   sync.is_done = 0;
 
-  grpc_credentials_get_request_metadata(creds, "", on_oauth2_response, &sync);
+  grpc_credentials_get_request_metadata(creds, &sync.pollset, "", on_oauth2_response, &sync);
 
-  gpr_mu_lock(&sync.mu);
-  while (!sync.is_done) gpr_cv_wait(&sync.cv, &sync.mu, gpr_inf_future);
-  gpr_mu_unlock(&sync.mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
+  while (!sync.is_done) grpc_pollset_work(&sync.pollset, gpr_inf_future);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
 
-  gpr_mu_destroy(&sync.mu);
-  gpr_cv_destroy(&sync.cv);
+  grpc_pollset_destroy(&sync.pollset);
   grpc_credentials_release(creds);
   gpr_cmdline_destroy(cl);
   grpc_shutdown();
diff --git a/test/core/security/print_google_default_creds_token.c b/test/core/security/print_google_default_creds_token.c
index 051e8607c4..a0da5b2d93 100644
--- a/test/core/security/print_google_default_creds_token.c
+++ b/test/core/security/print_google_default_creds_token.c
@@ -44,8 +44,7 @@
 #include <grpc/support/sync.h>
 
 typedef struct {
-  gpr_cv cv;
-  gpr_mu mu;
+  grpc_pollset pollset;
   int is_done;
 } synchronizer;
 
@@ -61,10 +60,10 @@ static void on_metadata_response(void *user_data,
     printf("\nGot token: %s\n\n",
            (const char *)GPR_SLICE_START_PTR(md_elems[0].value));
   }
-  gpr_mu_lock(&sync->mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&sync->pollset));
   sync->is_done = 1;
-  gpr_mu_unlock(&sync->mu);
-  gpr_cv_signal(&sync->cv);
+  grpc_pollset_kick(&sync->pollset);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&sync->pollset));
 }
 
 int main(int argc, char **argv) {
@@ -86,18 +85,16 @@ int main(int argc, char **argv) {
     goto end;
   }
 
-  gpr_mu_init(&sync.mu);
-  gpr_cv_init(&sync.cv);
+  grpc_pollset_init(&sync.pollset);
   sync.is_done = 0;
 
-  grpc_credentials_get_request_metadata(creds, "", on_metadata_response, &sync);
+  grpc_credentials_get_request_metadata(creds, &sync.pollset, "", on_metadata_response, &sync);
 
-  gpr_mu_lock(&sync.mu);
-  while (!sync.is_done) gpr_cv_wait(&sync.cv, &sync.mu, gpr_inf_future);
-  gpr_mu_unlock(&sync.mu);
+  gpr_mu_lock(GRPC_POLLSET_MU(&sync.pollset));
+  while (!sync.is_done) grpc_pollset_work(&sync.pollset, gpr_inf_future);
+  gpr_mu_unlock(GRPC_POLLSET_MU(&sync.pollset));
 
-  gpr_mu_destroy(&sync.mu);
-  gpr_cv_destroy(&sync.cv);
+  grpc_pollset_destroy(&sync.pollset);
   grpc_credentials_release(creds);
 
 end:
diff --git a/test/core/security/secure_endpoint_test.c b/test/core/security/secure_endpoint_test.c
index 30b23624d8..a8368fc842 100644
--- a/test/core/security/secure_endpoint_test.c
+++ b/test/core/security/secure_endpoint_test.c
@@ -44,6 +44,8 @@
 #include "test/core/util/test_config.h"
 #include "src/core/tsi/fake_transport_security.h"
 
+static grpc_pollset g_pollset;
+
 static grpc_endpoint_test_fixture secure_endpoint_create_fixture_tcp_socketpair(
     size_t slice_size, gpr_slice *leftover_slices, size_t leftover_nslices) {
   tsi_frame_protector *fake_read_protector = tsi_create_fake_protector(NULL);
@@ -52,6 +54,8 @@ static grpc_endpoint_test_fixture secure_endpoint_create_fixture_tcp_socketpair(
   grpc_endpoint_pair tcp;
 
   tcp = grpc_iomgr_create_endpoint_pair("fixture", slice_size);
+  grpc_endpoint_add_to_pollset(tcp.client, &g_pollset);
+  grpc_endpoint_add_to_pollset(tcp.server, &g_pollset);
 
   if (leftover_nslices == 0) {
     f.client_ep =
@@ -190,13 +194,17 @@ static void test_destroy_ep_early(grpc_endpoint_test_config config,
   clean_up();
 }
 
+static void destroy_pollset(void *p) { grpc_pollset_destroy(p); }
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
 
   grpc_iomgr_init();
-  grpc_endpoint_tests(configs[0]);
+  grpc_pollset_init(&g_pollset);
+  grpc_endpoint_tests(configs[0], &g_pollset);
   test_leftover(configs[1], 1);
   test_destroy_ep_early(configs[1], 1);
+  grpc_pollset_shutdown(&g_pollset, destroy_pollset, &g_pollset);
   grpc_iomgr_shutdown();
 
   return 0;
diff --git a/test/core/security/security_connector_test.c b/test/core/security/security_connector_test.c
new file mode 100644
index 0000000000..b37fd7213d
--- /dev/null
+++ b/test/core/security/security_connector_test.c
@@ -0,0 +1,256 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "src/core/security/security_connector.h"
+#include "src/core/security/security_context.h"
+#include "src/core/tsi/ssl_transport_security.h"
+#include "src/core/tsi/transport_security.h"
+#include "test/core/util/test_config.h"
+
+#include <grpc/grpc_security.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/useful.h>
+
+static int check_transport_security_type(const grpc_auth_context *ctx) {
+  grpc_auth_property_iterator it = grpc_auth_context_find_properties_by_name(
+      ctx, GRPC_TRANSPORT_SECURITY_TYPE_PROPERTY_NAME);
+  const grpc_auth_property *prop = grpc_auth_property_iterator_next(&it);
+  if (prop == NULL) return 0;
+  if (strncmp(prop->value, GRPC_SSL_TRANSPORT_SECURITY_TYPE,
+              prop->value_length) != 0) {
+    return 0;
+  }
+  /* Check that we have only one property with this name. */
+  if (grpc_auth_property_iterator_next(&it) != NULL) return 0;
+  return 1;
+}
+
+static void test_unauthenticated_ssl_peer(void) {
+  tsi_peer peer;
+  grpc_auth_context *ctx;
+  GPR_ASSERT(tsi_construct_peer(1, &peer) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_X509_CERTIFICATE_TYPE,
+                 &peer.properties[0]) == TSI_OK);
+  ctx = tsi_ssl_peer_to_auth_context(&peer);
+  GPR_ASSERT(ctx != NULL);
+  GPR_ASSERT(!grpc_auth_context_peer_is_authenticated(ctx));
+  GPR_ASSERT(check_transport_security_type(ctx));
+
+  tsi_peer_destruct(&peer);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
+}
+
+static int check_identity(const grpc_auth_context *ctx,
+                         const char *expected_property_name,
+                         const char **expected_identities,
+                         size_t num_identities) {
+  grpc_auth_property_iterator it;
+  const grpc_auth_property *prop;
+  size_t i;
+  GPR_ASSERT(grpc_auth_context_peer_is_authenticated(ctx));
+  it = grpc_auth_context_peer_identity(ctx);
+  for (i = 0; i < num_identities; i++) {
+    prop = grpc_auth_property_iterator_next(&it);
+    if (prop == NULL) {
+      gpr_log(GPR_ERROR, "Expected identity value %s not found.",
+              expected_identities[i]);
+      return 0;
+    }
+    if (strcmp(prop->name, expected_property_name) != 0) {
+      gpr_log(GPR_ERROR, "Expected peer identity property name %s and got %s.",
+              expected_property_name, prop->name);
+      return 0;
+    }
+    if (strncmp(prop->value, expected_identities[i], prop->value_length) != 0) {
+      gpr_log(GPR_ERROR, "Expected peer identity %s and got %s.",
+              expected_identities[i], prop->value);
+      return 0;
+    }
+  }
+  return 1;
+}
+
+static int check_x509_cn(const grpc_auth_context *ctx,
+                         const char *expected_cn) {
+  grpc_auth_property_iterator it = grpc_auth_context_find_properties_by_name(
+      ctx, GRPC_X509_CN_PROPERTY_NAME);
+  const grpc_auth_property *prop = grpc_auth_property_iterator_next(&it);
+  if (prop == NULL) {
+    gpr_log(GPR_ERROR, "CN property not found.");
+    return 0;
+  }
+  if (strncmp(prop->value, expected_cn, prop->value_length) != 0) {
+    gpr_log(GPR_ERROR, "Expected CN %s and got %s", expected_cn, prop->value);
+    return 0;
+  }
+  if (grpc_auth_property_iterator_next(&it) != NULL) {
+    gpr_log(GPR_ERROR, "Expected only one property for CN.");
+    return 0;
+  }
+  return 1;
+}
+
+static void test_cn_only_ssl_peer_to_auth_context(void) {
+  tsi_peer peer;
+  grpc_auth_context *ctx;
+  const char *expected_cn = "cn1";
+  GPR_ASSERT(tsi_construct_peer(2, &peer) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_X509_CERTIFICATE_TYPE,
+                 &peer.properties[0]) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY, expected_cn,
+                 &peer.properties[1]) == TSI_OK);
+  ctx = tsi_ssl_peer_to_auth_context(&peer);
+  GPR_ASSERT(ctx != NULL);
+  GPR_ASSERT(grpc_auth_context_peer_is_authenticated(ctx));
+  GPR_ASSERT(check_identity(ctx, GRPC_X509_CN_PROPERTY_NAME, &expected_cn, 1));
+  GPR_ASSERT(check_transport_security_type(ctx));
+  GPR_ASSERT(check_x509_cn(ctx, expected_cn));
+
+  tsi_peer_destruct(&peer);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
+}
+
+static void test_cn_and_one_san_ssl_peer_to_auth_context(void) {
+  tsi_peer peer;
+  grpc_auth_context *ctx;
+  const char *expected_cn = "cn1";
+  const char *expected_san = "san1";
+  GPR_ASSERT(tsi_construct_peer(3, &peer) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_X509_CERTIFICATE_TYPE,
+                 &peer.properties[0]) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY, expected_cn,
+                 &peer.properties[1]) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY, expected_san,
+                 &peer.properties[2]) == TSI_OK);
+  ctx = tsi_ssl_peer_to_auth_context(&peer);
+  GPR_ASSERT(ctx != NULL);
+  GPR_ASSERT(grpc_auth_context_peer_is_authenticated(ctx));
+  GPR_ASSERT(check_identity(ctx, GRPC_X509_SAN_PROPERTY_NAME, &expected_san, 1));
+  GPR_ASSERT(check_transport_security_type(ctx));
+  GPR_ASSERT(check_x509_cn(ctx, expected_cn));
+
+  tsi_peer_destruct(&peer);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
+}
+
+static void test_cn_and_multiple_sans_ssl_peer_to_auth_context(void) {
+  tsi_peer peer;
+  grpc_auth_context *ctx;
+  const char *expected_cn = "cn1";
+  const char *expected_sans[] = {"san1", "san2", "san3"};
+  size_t i;
+  GPR_ASSERT(tsi_construct_peer(2 + GPR_ARRAY_SIZE(expected_sans), &peer) ==
+             TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_X509_CERTIFICATE_TYPE,
+                 &peer.properties[0]) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY, expected_cn,
+                 &peer.properties[1]) == TSI_OK);
+  for (i = 0; i < GPR_ARRAY_SIZE(expected_sans); i++) {
+    GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                   TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY,
+                   expected_sans[i], &peer.properties[2 + i]) == TSI_OK);
+  }
+  ctx = tsi_ssl_peer_to_auth_context(&peer);
+  GPR_ASSERT(ctx != NULL);
+  GPR_ASSERT(grpc_auth_context_peer_is_authenticated(ctx));
+  GPR_ASSERT(check_identity(ctx, GRPC_X509_SAN_PROPERTY_NAME, expected_sans,
+                            GPR_ARRAY_SIZE(expected_sans)));
+  GPR_ASSERT(check_transport_security_type(ctx));
+  GPR_ASSERT(check_x509_cn(ctx, expected_cn));
+
+  tsi_peer_destruct(&peer);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
+}
+
+static void test_cn_and_multiple_sans_and_others_ssl_peer_to_auth_context(
+    void) {
+  tsi_peer peer;
+  grpc_auth_context *ctx;
+  const char *expected_cn = "cn1";
+  const char *expected_sans[] = {"san1", "san2", "san3"};
+  size_t i;
+  GPR_ASSERT(tsi_construct_peer(4 + GPR_ARRAY_SIZE(expected_sans), &peer) ==
+             TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_CERTIFICATE_TYPE_PEER_PROPERTY, TSI_X509_CERTIFICATE_TYPE,
+                 &peer.properties[0]) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 "foo", "bar", &peer.properties[1]) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 TSI_X509_SUBJECT_COMMON_NAME_PEER_PROPERTY, expected_cn,
+                 &peer.properties[2]) == TSI_OK);
+  GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                 "chapi", "chapo", &peer.properties[3]) == TSI_OK);
+  for (i = 0; i < GPR_ARRAY_SIZE(expected_sans); i++) {
+    GPR_ASSERT(tsi_construct_string_peer_property_from_cstring(
+                   TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY,
+                   expected_sans[i], &peer.properties[4 + i]) == TSI_OK);
+  }
+  ctx = tsi_ssl_peer_to_auth_context(&peer);
+  GPR_ASSERT(ctx != NULL);
+  GPR_ASSERT(grpc_auth_context_peer_is_authenticated(ctx));
+  GPR_ASSERT(check_identity(ctx, GRPC_X509_SAN_PROPERTY_NAME, expected_sans,
+                            GPR_ARRAY_SIZE(expected_sans)));
+  GPR_ASSERT(check_transport_security_type(ctx));
+  GPR_ASSERT(check_x509_cn(ctx, expected_cn));
+
+  tsi_peer_destruct(&peer);
+  GRPC_AUTH_CONTEXT_UNREF(ctx, "test");
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+
+  test_unauthenticated_ssl_peer();
+  test_cn_only_ssl_peer_to_auth_context();
+  test_cn_and_one_san_ssl_peer_to_auth_context();
+  test_cn_and_multiple_sans_ssl_peer_to_auth_context();
+  test_cn_and_multiple_sans_and_others_ssl_peer_to_auth_context();
+
+  grpc_shutdown();
+  return 0;
+}
diff --git a/test/core/surface/byte_buffer_reader_test.c b/test/core/surface/byte_buffer_reader_test.c
index 87a2cd7a43..d9c60e4212 100644
--- a/test/core/surface/byte_buffer_reader_test.c
+++ b/test/core/surface/byte_buffer_reader_test.c
@@ -127,11 +127,11 @@ static void read_compressed_slice(grpc_compression_algorithm algorithm,
 
   input_slice = gpr_slice_malloc(input_size);
   memset(GPR_SLICE_START_PTR(input_slice), 'a', input_size);
-  gpr_slice_buffer_add(&sliceb_in, input_slice);  /* takes ownership */
+  gpr_slice_buffer_add(&sliceb_in, input_slice); /* takes ownership */
   GPR_ASSERT(grpc_msg_compress(algorithm, &sliceb_in, &sliceb_out));
 
-  buffer = grpc_raw_compressed_byte_buffer_create(
-      sliceb_out.slices, sliceb_out.count, algorithm);
+  buffer = grpc_raw_compressed_byte_buffer_create(sliceb_out.slices,
+                                                  sliceb_out.count, algorithm);
   grpc_byte_buffer_reader_init(&reader, buffer);
 
   while (grpc_byte_buffer_reader_next(&reader, &read_slice)) {
@@ -160,6 +160,30 @@ static void test_read_deflate_compressed_slice(void) {
   read_compressed_slice(GRPC_COMPRESS_DEFLATE, INPUT_SIZE);
 }
 
+static void test_byte_buffer_from_reader(void) {
+  gpr_slice slice;
+  grpc_byte_buffer *buffer, *buffer_from_reader;
+  grpc_byte_buffer_reader reader;
+
+  LOG_TEST("test_byte_buffer_from_reader");
+  slice = gpr_slice_malloc(4);
+  memcpy(GPR_SLICE_START_PTR(slice), "test", 4);
+  buffer = grpc_raw_byte_buffer_create(&slice, 1);
+  gpr_slice_unref(slice);
+  grpc_byte_buffer_reader_init(&reader, buffer);
+
+  buffer_from_reader = grpc_raw_byte_buffer_from_reader(&reader);
+  GPR_ASSERT(buffer->type == buffer_from_reader->type);
+  GPR_ASSERT(buffer_from_reader->data.raw.compression == GRPC_COMPRESS_NONE);
+  GPR_ASSERT(buffer_from_reader->data.raw.slice_buffer.count == 1);
+  GPR_ASSERT(memcmp(GPR_SLICE_START_PTR(
+                        buffer_from_reader->data.raw.slice_buffer.slices[0]),
+                    "test", 4) == 0);
+
+  grpc_byte_buffer_destroy(buffer);
+  grpc_byte_buffer_destroy(buffer_from_reader);
+}
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   test_read_one_slice();
@@ -167,6 +191,7 @@ int main(int argc, char **argv) {
   test_read_none_compressed_slice();
   test_read_gzip_compressed_slice();
   test_read_deflate_compressed_slice();
+  test_byte_buffer_from_reader();
 
   return 0;
 }
diff --git a/test/core/surface/completion_queue_test.c b/test/core/surface/completion_queue_test.c
index 9e7b2ea1df..eba24f5c6e 100644
--- a/test/core/surface/completion_queue_test.c
+++ b/test/core/surface/completion_queue_test.c
@@ -100,7 +100,8 @@ static void test_shutdown_then_next_polling(void) {
 
   cc = grpc_completion_queue_create();
   grpc_completion_queue_shutdown(cc);
-  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_past).type == GRPC_QUEUE_SHUTDOWN);
+  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_past).type ==
+             GRPC_QUEUE_SHUTDOWN);
   grpc_completion_queue_destroy(cc);
 }
 
@@ -110,7 +111,8 @@ static void test_shutdown_then_next_with_timeout(void) {
 
   cc = grpc_completion_queue_create();
   grpc_completion_queue_shutdown(cc);
-  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_future).type == GRPC_QUEUE_SHUTDOWN);
+  GPR_ASSERT(grpc_completion_queue_next(cc, gpr_inf_future).type ==
+             GRPC_QUEUE_SHUTDOWN);
   grpc_completion_queue_destroy(cc);
 }
 
@@ -177,7 +179,7 @@ static void producer_thread(void *arg) {
   int i;
 
   gpr_log(GPR_INFO, "producer %d started", opt->id);
-  gpr_event_set(&opt->on_started, (void *)(gpr_intptr) 1);
+  gpr_event_set(&opt->on_started, (void *)(gpr_intptr)1);
   GPR_ASSERT(gpr_event_wait(opt->phase1, ten_seconds_time()));
 
   gpr_log(GPR_INFO, "producer %d phase 1", opt->id);
@@ -186,7 +188,7 @@ static void producer_thread(void *arg) {
   }
 
   gpr_log(GPR_INFO, "producer %d phase 1 done", opt->id);
-  gpr_event_set(&opt->on_phase1_done, (void *)(gpr_intptr) 1);
+  gpr_event_set(&opt->on_phase1_done, (void *)(gpr_intptr)1);
   GPR_ASSERT(gpr_event_wait(opt->phase2, ten_seconds_time()));
 
   gpr_log(GPR_INFO, "producer %d phase 2", opt->id);
@@ -196,7 +198,7 @@ static void producer_thread(void *arg) {
   }
 
   gpr_log(GPR_INFO, "producer %d phase 2 done", opt->id);
-  gpr_event_set(&opt->on_finished, (void *)(gpr_intptr) 1);
+  gpr_event_set(&opt->on_finished, (void *)(gpr_intptr)1);
 }
 
 static void consumer_thread(void *arg) {
@@ -204,13 +206,13 @@ static void consumer_thread(void *arg) {
   grpc_event ev;
 
   gpr_log(GPR_INFO, "consumer %d started", opt->id);
-  gpr_event_set(&opt->on_started, (void *)(gpr_intptr) 1);
+  gpr_event_set(&opt->on_started, (void *)(gpr_intptr)1);
   GPR_ASSERT(gpr_event_wait(opt->phase1, ten_seconds_time()));
 
   gpr_log(GPR_INFO, "consumer %d phase 1", opt->id);
 
   gpr_log(GPR_INFO, "consumer %d phase 1 done", opt->id);
-  gpr_event_set(&opt->on_phase1_done, (void *)(gpr_intptr) 1);
+  gpr_event_set(&opt->on_phase1_done, (void *)(gpr_intptr)1);
   GPR_ASSERT(gpr_event_wait(opt->phase2, ten_seconds_time()));
 
   gpr_log(GPR_INFO, "consumer %d phase 2", opt->id);
@@ -223,7 +225,7 @@ static void consumer_thread(void *arg) {
         break;
       case GRPC_QUEUE_SHUTDOWN:
         gpr_log(GPR_INFO, "consumer %d phase 2 done", opt->id);
-        gpr_event_set(&opt->on_finished, (void *)(gpr_intptr) 1);
+        gpr_event_set(&opt->on_finished, (void *)(gpr_intptr)1);
         return;
       case GRPC_QUEUE_TIMEOUT:
         gpr_log(GPR_ERROR, "Invalid timeout received");
@@ -242,10 +244,8 @@ static void test_threading(int producers, int consumers) {
   int total_consumed = 0;
   static int optid = 101;
 
-  gpr_log(GPR_INFO, "%s: %d producers, %d consumers", "test_threading", producers,
-          consumers);
-
-  grpc_completion_queue_dont_poll_test_only(cc);
+  gpr_log(GPR_INFO, "%s: %d producers, %d consumers", "test_threading",
+          producers, consumers);
 
   /* start all threads: they will wait for phase1 */
   for (i = 0; i < producers + consumers; i++) {
@@ -267,7 +267,7 @@ static void test_threading(int producers, int consumers) {
   /* start phase1: producers will pre-declare all operations they will
      complete */
   gpr_log(GPR_INFO, "start phase 1");
-  gpr_event_set(&phase1, (void *)(gpr_intptr) 1);
+  gpr_event_set(&phase1, (void *)(gpr_intptr)1);
 
   gpr_log(GPR_INFO, "wait phase 1");
   for (i = 0; i < producers + consumers; i++) {
@@ -277,7 +277,7 @@ static void test_threading(int producers, int consumers) {
 
   /* start phase2: operations will complete, and consumers will consume them */
   gpr_log(GPR_INFO, "start phase 2");
-  gpr_event_set(&phase2, (void *)(gpr_intptr) 1);
+  gpr_event_set(&phase2, (void *)(gpr_intptr)1);
 
   /* in parallel, we shutdown the completion channel - all events should still
      be consumed */