rename all test core files to cc and a lot of C++ style conversions

1 files changed, 864 insertions, 0 deletions

diff --git a/test/core/iomgr/resource_quota_test.cc b/test/core/iomgr/resource_quota_test.cc
new file mode 100644
index 0000000000..f0002e0947
--- /dev/null
+++ b/test/core/iomgr/resource_quota_test.cc
@@ -0,0 +1,864 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/iomgr/resource_quota.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/slice/slice_internal.h"
+#include "test/core/util/test_config.h"
+
+gpr_mu g_mu;
+gpr_cv g_cv;
+
+static void inc_int_cb(grpc_exec_ctx *exec_ctx, void *a, grpc_error *error) {
+  gpr_mu_lock(&g_mu);
+  ++*(int *)a;
+  gpr_cv_signal(&g_cv);
+  gpr_mu_unlock(&g_mu);
+}
+
+static void assert_counter_becomes(int *ctr, int value) {
+  gpr_mu_lock(&g_mu);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(5);
+  while (*ctr != value) {
+    GPR_ASSERT(!gpr_cv_wait(&g_cv, &g_mu, deadline));
+  }
+  gpr_mu_unlock(&g_mu);
+}
+
+static void set_event_cb(grpc_exec_ctx *exec_ctx, void *a, grpc_error *error) {
+  gpr_event_set((gpr_event *)a, (void *)1);
+}
+grpc_closure *set_event(gpr_event *ev) {
+  return GRPC_CLOSURE_CREATE(set_event_cb, ev, grpc_schedule_on_exec_ctx);
+}
+
+typedef struct {
+  size_t size;
+  grpc_resource_user *resource_user;
+  grpc_closure *then;
+} reclaimer_args;
+static void reclaimer_cb(grpc_exec_ctx *exec_ctx, void *args,
+                         grpc_error *error) {
+  GPR_ASSERT(error == GRPC_ERROR_NONE);
+  reclaimer_args *a = static_cast<reclaimer_args *>(args);
+  grpc_resource_user_free(exec_ctx, a->resource_user, a->size);
+  grpc_resource_user_finish_reclamation(exec_ctx, a->resource_user);
+  GRPC_CLOSURE_RUN(exec_ctx, a->then, GRPC_ERROR_NONE);
+  gpr_free(a);
+}
+grpc_closure *make_reclaimer(grpc_resource_user *resource_user, size_t size,
+                             grpc_closure *then) {
+  reclaimer_args *a = static_cast<reclaimer_args *>(gpr_malloc(sizeof(*a)));
+  a->size = size;
+  a->resource_user = resource_user;
+  a->then = then;
+  return GRPC_CLOSURE_CREATE(reclaimer_cb, a, grpc_schedule_on_exec_ctx);
+}
+
+static void unused_reclaimer_cb(grpc_exec_ctx *exec_ctx, void *arg,
+                                grpc_error *error) {
+  GPR_ASSERT(error == GRPC_ERROR_CANCELLED);
+  GRPC_CLOSURE_RUN(exec_ctx, static_cast<grpc_closure *>(arg), GRPC_ERROR_NONE);
+}
+grpc_closure *make_unused_reclaimer(grpc_closure *then) {
+  return GRPC_CLOSURE_CREATE(unused_reclaimer_cb, then,
+                             grpc_schedule_on_exec_ctx);
+}
+
+static void destroy_user(grpc_resource_user *usr) {
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_resource_user_unref(&exec_ctx, usr);
+  grpc_exec_ctx_finish(&exec_ctx);
+}
+
+static void test_no_op(void) {
+  gpr_log(GPR_INFO, "** test_no_op **");
+  grpc_resource_quota_unref(grpc_resource_quota_create("test_no_op"));
+}
+
+static void test_resize_then_destroy(void) {
+  gpr_log(GPR_INFO, "** test_resize_then_destroy **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_resize_then_destroy");
+  grpc_resource_quota_resize(q, 1024 * 1024);
+  grpc_resource_quota_unref(q);
+}
+
+static void test_resource_user_no_op(void) {
+  gpr_log(GPR_INFO, "** test_resource_user_no_op **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_resource_user_no_op");
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+}
+
+static void test_instant_alloc_then_free(void) {
+  gpr_log(GPR_INFO, "** test_instant_alloc_then_free **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_instant_alloc_then_free");
+  grpc_resource_quota_resize(q, 1024 * 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, NULL);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+}
+
+static void test_instant_alloc_free_pair(void) {
+  gpr_log(GPR_INFO, "** test_instant_alloc_free_pair **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_instant_alloc_free_pair");
+  grpc_resource_quota_resize(q, 1024 * 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, NULL);
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+}
+
+static void test_simple_async_alloc(void) {
+  gpr_log(GPR_INFO, "** test_simple_async_alloc **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_simple_async_alloc");
+  grpc_resource_quota_resize(q, 1024 * 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+}
+
+static void test_async_alloc_blocked_by_size(void) {
+  gpr_log(GPR_INFO, "** test_async_alloc_blocked_by_size **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_async_alloc_blocked_by_size");
+  grpc_resource_quota_resize(q, 1);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  gpr_event ev;
+  gpr_event_init(&ev);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(
+                   &ev, grpc_timeout_milliseconds_to_deadline(100)) == NULL);
+  }
+  grpc_resource_quota_resize(q, 1024);
+  GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) != NULL);
+  ;
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+}
+
+static void test_scavenge(void) {
+  gpr_log(GPR_INFO, "** test_scavenge **");
+  grpc_resource_quota *q = grpc_resource_quota_create("test_scavenge");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr1 = grpc_resource_user_create(q, "usr1");
+  grpc_resource_user *usr2 = grpc_resource_user_create(q, "usr2");
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr1, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr1, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr2, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr2, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr1);
+  destroy_user(usr2);
+}
+
+static void test_scavenge_blocked(void) {
+  gpr_log(GPR_INFO, "** test_scavenge_blocked **");
+  grpc_resource_quota *q = grpc_resource_quota_create("test_scavenge_blocked");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr1 = grpc_resource_user_create(q, "usr1");
+  grpc_resource_user *usr2 = grpc_resource_user_create(q, "usr2");
+  gpr_event ev;
+  {
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr1, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr2, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(
+                   &ev, grpc_timeout_milliseconds_to_deadline(100)) == NULL);
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr1, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr2, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr1);
+  destroy_user(usr2);
+}
+
+static void test_blocked_until_scheduled_reclaim(void) {
+  gpr_log(GPR_INFO, "** test_blocked_until_scheduled_reclaim **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_blocked_until_scheduled_reclaim");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  gpr_event reclaim_done;
+  gpr_event_init(&reclaim_done);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, false,
+        make_reclaimer(usr, 1024, set_event(&reclaim_done)));
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&reclaim_done,
+                              grpc_timeout_seconds_to_deadline(5)) != NULL);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+}
+
+static void test_blocked_until_scheduled_reclaim_and_scavenge(void) {
+  gpr_log(GPR_INFO, "** test_blocked_until_scheduled_reclaim_and_scavenge **");
+  grpc_resource_quota *q = grpc_resource_quota_create(
+      "test_blocked_until_scheduled_reclaim_and_scavenge");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr1 = grpc_resource_user_create(q, "usr1");
+  grpc_resource_user *usr2 = grpc_resource_user_create(q, "usr2");
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr1, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  gpr_event reclaim_done;
+  gpr_event_init(&reclaim_done);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr1, false,
+        make_reclaimer(usr1, 1024, set_event(&reclaim_done)));
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr2, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&reclaim_done,
+                              grpc_timeout_seconds_to_deadline(5)) != NULL);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr2, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr1);
+  destroy_user(usr2);
+}
+
+static void test_blocked_until_scheduled_destructive_reclaim(void) {
+  gpr_log(GPR_INFO, "** test_blocked_until_scheduled_destructive_reclaim **");
+  grpc_resource_quota *q = grpc_resource_quota_create(
+      "test_blocked_until_scheduled_destructive_reclaim");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  gpr_event reclaim_done;
+  gpr_event_init(&reclaim_done);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, true,
+        make_reclaimer(usr, 1024, set_event(&reclaim_done)));
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&reclaim_done,
+                              grpc_timeout_seconds_to_deadline(5)) != NULL);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+}
+
+static void test_unused_reclaim_is_cancelled(void) {
+  gpr_log(GPR_INFO, "** test_unused_reclaim_is_cancelled **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_unused_reclaim_is_cancelled");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  gpr_event benign_done;
+  gpr_event_init(&benign_done);
+  gpr_event destructive_done;
+  gpr_event_init(&destructive_done);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, false, make_unused_reclaimer(set_event(&benign_done)));
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, true,
+        make_unused_reclaimer(set_event(&destructive_done)));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&benign_done,
+                              grpc_timeout_milliseconds_to_deadline(100)) ==
+               NULL);
+    GPR_ASSERT(gpr_event_wait(&destructive_done,
+                              grpc_timeout_milliseconds_to_deadline(100)) ==
+               NULL);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+  GPR_ASSERT(gpr_event_wait(&benign_done,
+                            grpc_timeout_seconds_to_deadline(5)) != NULL);
+  GPR_ASSERT(gpr_event_wait(&destructive_done,
+                            grpc_timeout_seconds_to_deadline(5)) != NULL);
+}
+
+static void test_benign_reclaim_is_preferred(void) {
+  gpr_log(GPR_INFO, "** test_benign_reclaim_is_preferred **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_benign_reclaim_is_preferred");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  gpr_event benign_done;
+  gpr_event_init(&benign_done);
+  gpr_event destructive_done;
+  gpr_event_init(&destructive_done);
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, false,
+        make_reclaimer(usr, 1024, set_event(&benign_done)));
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, true,
+        make_unused_reclaimer(set_event(&destructive_done)));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&benign_done,
+                              grpc_timeout_milliseconds_to_deadline(100)) ==
+               NULL);
+    GPR_ASSERT(gpr_event_wait(&destructive_done,
+                              grpc_timeout_milliseconds_to_deadline(100)) ==
+               NULL);
+  }
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&benign_done,
+                              grpc_timeout_seconds_to_deadline(5)) != NULL);
+    GPR_ASSERT(gpr_event_wait(&destructive_done,
+                              grpc_timeout_milliseconds_to_deadline(100)) ==
+               NULL);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+  GPR_ASSERT(gpr_event_wait(&benign_done,
+                            grpc_timeout_seconds_to_deadline(5)) != NULL);
+  GPR_ASSERT(gpr_event_wait(&destructive_done,
+                            grpc_timeout_seconds_to_deadline(5)) != NULL);
+}
+
+static void test_multiple_reclaims_can_be_triggered(void) {
+  gpr_log(GPR_INFO, "** test_multiple_reclaims_can_be_triggered **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_multiple_reclaims_can_be_triggered");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  gpr_event benign_done;
+  gpr_event_init(&benign_done);
+  gpr_event destructive_done;
+  gpr_event_init(&destructive_done);
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, false,
+        make_reclaimer(usr, 512, set_event(&benign_done)));
+    grpc_resource_user_post_reclaimer(
+        &exec_ctx, usr, true,
+        make_reclaimer(usr, 512, set_event(&destructive_done)));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&benign_done,
+                              grpc_timeout_milliseconds_to_deadline(100)) ==
+               NULL);
+    GPR_ASSERT(gpr_event_wait(&destructive_done,
+                              grpc_timeout_milliseconds_to_deadline(100)) ==
+               NULL);
+  }
+  {
+    gpr_event ev;
+    gpr_event_init(&ev);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&ev));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&benign_done,
+                              grpc_timeout_seconds_to_deadline(5)) != NULL);
+    GPR_ASSERT(gpr_event_wait(&destructive_done,
+                              grpc_timeout_seconds_to_deadline(5)) != NULL);
+    GPR_ASSERT(gpr_event_wait(&ev, grpc_timeout_seconds_to_deadline(5)) !=
+               NULL);
+    ;
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  grpc_resource_quota_unref(q);
+  destroy_user(usr);
+  GPR_ASSERT(gpr_event_wait(&benign_done,
+                            grpc_timeout_seconds_to_deadline(5)) != NULL);
+  GPR_ASSERT(gpr_event_wait(&destructive_done,
+                            grpc_timeout_seconds_to_deadline(5)) != NULL);
+}
+
+static void test_resource_user_stays_allocated_until_memory_released(void) {
+  gpr_log(GPR_INFO,
+          "** test_resource_user_stays_allocated_until_memory_released **");
+  grpc_resource_quota *q = grpc_resource_quota_create(
+      "test_resource_user_stays_allocated_until_memory_released");
+  grpc_resource_quota_resize(q, 1024 * 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, NULL);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_quota_unref(q);
+    grpc_resource_user_unref(&exec_ctx, usr);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+static void
+test_resource_user_stays_allocated_and_reclaimers_unrun_until_memory_released(
+    void) {
+  gpr_log(GPR_INFO,
+          "** "
+          "test_resource_user_stays_allocated_and_reclaimers_unrun_until_"
+          "memory_released **");
+  grpc_resource_quota *q = grpc_resource_quota_create(
+      "test_resource_user_stays_allocated_and_reclaimers_unrun_until_memory_"
+      "released");
+  grpc_resource_quota_resize(q, 1024);
+  for (int i = 0; i < 10; i++) {
+    grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+    gpr_event reclaimer_cancelled;
+    gpr_event_init(&reclaimer_cancelled);
+    {
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_resource_user_post_reclaimer(
+          &exec_ctx, usr, false,
+          make_unused_reclaimer(set_event(&reclaimer_cancelled)));
+      grpc_exec_ctx_finish(&exec_ctx);
+      GPR_ASSERT(gpr_event_wait(&reclaimer_cancelled,
+                                grpc_timeout_milliseconds_to_deadline(100)) ==
+                 NULL);
+    }
+    {
+      gpr_event allocated;
+      gpr_event_init(&allocated);
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&allocated));
+      grpc_exec_ctx_finish(&exec_ctx);
+      GPR_ASSERT(gpr_event_wait(&allocated,
+                                grpc_timeout_seconds_to_deadline(5)) != NULL);
+      GPR_ASSERT(gpr_event_wait(&reclaimer_cancelled,
+                                grpc_timeout_milliseconds_to_deadline(100)) ==
+                 NULL);
+    }
+    {
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_resource_user_unref(&exec_ctx, usr);
+      grpc_exec_ctx_finish(&exec_ctx);
+      GPR_ASSERT(gpr_event_wait(&reclaimer_cancelled,
+                                grpc_timeout_milliseconds_to_deadline(100)) ==
+                 NULL);
+    }
+    {
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_resource_user_free(&exec_ctx, usr, 1024);
+      grpc_exec_ctx_finish(&exec_ctx);
+      GPR_ASSERT(gpr_event_wait(&reclaimer_cancelled,
+                                grpc_timeout_seconds_to_deadline(5)) != NULL);
+    }
+  }
+  grpc_resource_quota_unref(q);
+}
+
+static void test_reclaimers_can_be_posted_repeatedly(void) {
+  gpr_log(GPR_INFO, "** test_reclaimers_can_be_posted_repeatedly **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_reclaimers_can_be_posted_repeatedly");
+  grpc_resource_quota_resize(q, 1024);
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+  {
+    gpr_event allocated;
+    gpr_event_init(&allocated);
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&allocated));
+    grpc_exec_ctx_finish(&exec_ctx);
+    GPR_ASSERT(gpr_event_wait(&allocated,
+                              grpc_timeout_seconds_to_deadline(5)) != NULL);
+  }
+  for (int i = 0; i < 10; i++) {
+    gpr_event reclaimer_done;
+    gpr_event_init(&reclaimer_done);
+    {
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_resource_user_post_reclaimer(
+          &exec_ctx, usr, false,
+          make_reclaimer(usr, 1024, set_event(&reclaimer_done)));
+      grpc_exec_ctx_finish(&exec_ctx);
+      GPR_ASSERT(gpr_event_wait(&reclaimer_done,
+                                grpc_timeout_milliseconds_to_deadline(100)) ==
+                 NULL);
+    }
+    {
+      gpr_event allocated;
+      gpr_event_init(&allocated);
+      grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+      grpc_resource_user_alloc(&exec_ctx, usr, 1024, set_event(&allocated));
+      grpc_exec_ctx_finish(&exec_ctx);
+      GPR_ASSERT(gpr_event_wait(&allocated,
+                                grpc_timeout_seconds_to_deadline(5)) != NULL);
+      GPR_ASSERT(gpr_event_wait(&reclaimer_done,
+                                grpc_timeout_seconds_to_deadline(5)) != NULL);
+    }
+  }
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_free(&exec_ctx, usr, 1024);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  destroy_user(usr);
+  grpc_resource_quota_unref(q);
+}
+
+static void test_one_slice(void) {
+  gpr_log(GPR_INFO, "** test_one_slice **");
+
+  grpc_resource_quota *q = grpc_resource_quota_create("test_one_slice");
+  grpc_resource_quota_resize(q, 1024);
+
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+
+  grpc_resource_user_slice_allocator alloc;
+  int num_allocs = 0;
+  grpc_resource_user_slice_allocator_init(&alloc, usr, inc_int_cb, &num_allocs);
+
+  grpc_slice_buffer buffer;
+  grpc_slice_buffer_init(&buffer);
+
+  {
+    const int start_allocs = num_allocs;
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc_slices(&exec_ctx, &alloc, 1024, 1, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+    assert_counter_becomes(&num_allocs, start_allocs + 1);
+  }
+
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+  destroy_user(usr);
+  grpc_resource_quota_unref(q);
+}
+
+static void test_one_slice_deleted_late(void) {
+  gpr_log(GPR_INFO, "** test_one_slice_deleted_late **");
+
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_one_slice_deleted_late");
+  grpc_resource_quota_resize(q, 1024);
+
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+
+  grpc_resource_user_slice_allocator alloc;
+  int num_allocs = 0;
+  grpc_resource_user_slice_allocator_init(&alloc, usr, inc_int_cb, &num_allocs);
+
+  grpc_slice_buffer buffer;
+  grpc_slice_buffer_init(&buffer);
+
+  {
+    const int start_allocs = num_allocs;
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc_slices(&exec_ctx, &alloc, 1024, 1, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+    assert_counter_becomes(&num_allocs, start_allocs + 1);
+  }
+
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_unref(&exec_ctx, usr);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
+  grpc_resource_quota_unref(q);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+static void test_resize_to_zero(void) {
+  gpr_log(GPR_INFO, "** test_resize_to_zero **");
+  grpc_resource_quota *q = grpc_resource_quota_create("test_resize_to_zero");
+  grpc_resource_quota_resize(q, 0);
+  grpc_resource_quota_unref(q);
+}
+
+static void test_negative_rq_free_pool(void) {
+  gpr_log(GPR_INFO, "** test_negative_rq_free_pool **");
+  grpc_resource_quota *q =
+      grpc_resource_quota_create("test_negative_rq_free_pool");
+  grpc_resource_quota_resize(q, 1024);
+
+  grpc_resource_user *usr = grpc_resource_user_create(q, "usr");
+
+  grpc_resource_user_slice_allocator alloc;
+  int num_allocs = 0;
+  grpc_resource_user_slice_allocator_init(&alloc, usr, inc_int_cb, &num_allocs);
+
+  grpc_slice_buffer buffer;
+  grpc_slice_buffer_init(&buffer);
+
+  {
+    const int start_allocs = num_allocs;
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_alloc_slices(&exec_ctx, &alloc, 1024, 1, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+    assert_counter_becomes(&num_allocs, start_allocs + 1);
+  }
+
+  grpc_resource_quota_resize(q, 512);
+
+  double eps = 0.0001;
+  GPR_ASSERT(grpc_resource_quota_get_memory_pressure(q) < 1 + eps);
+  GPR_ASSERT(grpc_resource_quota_get_memory_pressure(q) > 1 - eps);
+
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_resource_user_unref(&exec_ctx, usr);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+
+  grpc_resource_quota_unref(q);
+  {
+    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    grpc_slice_buffer_destroy_internal(&exec_ctx, &buffer);
+    grpc_exec_ctx_finish(&exec_ctx);
+  }
+}
+
+int main(int argc, char **argv) {
+  grpc_test_init(argc, argv);
+  grpc_init();
+  gpr_mu_init(&g_mu);
+  gpr_cv_init(&g_cv);
+  test_no_op();
+  test_resize_then_destroy();
+  test_resource_user_no_op();
+  test_instant_alloc_then_free();
+  test_instant_alloc_free_pair();
+  test_simple_async_alloc();
+  test_async_alloc_blocked_by_size();
+  test_scavenge();
+  test_scavenge_blocked();
+  test_blocked_until_scheduled_reclaim();
+  test_blocked_until_scheduled_reclaim_and_scavenge();
+  test_blocked_until_scheduled_destructive_reclaim();
+  test_unused_reclaim_is_cancelled();
+  test_benign_reclaim_is_preferred();
+  test_multiple_reclaims_can_be_triggered();
+  test_resource_user_stays_allocated_until_memory_released();
+  test_resource_user_stays_allocated_and_reclaimers_unrun_until_memory_released();
+  test_reclaimers_can_be_posted_repeatedly();
+  test_one_slice();
+  test_one_slice_deleted_late();
+  test_resize_to_zero();
+  test_negative_rq_free_pool();
+  gpr_mu_destroy(&g_mu);
+  gpr_cv_destroy(&g_cv);
+  grpc_shutdown();
+  return 0;
+}