Removing instances of exec_ctx being passed around in functions in

src/core. exec_ctx is now a thread_local pointer of type ExecCtx instead of
grpc_exec_ctx which is initialized whenever ExecCtx is instantiated. ExecCtx
also keeps track of the previous exec_ctx so that nesting of exec_ctx is
allowed. This means that there is only one exec_ctx being used at any
time. Also, grpc_exec_ctx_finish is called in the destructor of the
object, and the previous exec_ctx is restored to avoid breaking current
functionality. The code still explicitly calls grpc_exec_ctx_finish
because removing all such instances causes the code to break.

1 files changed, 10 insertions, 10 deletions

diff --git a/test/cpp/performance/writes_per_rpc_test.cc b/test/cpp/performance/writes_per_rpc_test.cc
index f4f794cb88..0cf0fd0069 100644
--- a/test/cpp/performance/writes_per_rpc_test.cc
+++ b/test/cpp/performance/writes_per_rpc_test.cc
@@ -83,26 +83,26 @@ class EndpointPairFixture {
     ApplyCommonServerBuilderConfig(&b);
     server_ = b.BuildAndStart();
 
-    grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+    ExecCtx _local_exec_ctx;
 
     /* add server endpoint to server_ */
     {
       const grpc_channel_args* server_args =
           grpc_server_get_channel_args(server_->c_server());
       grpc_transport* transport = grpc_create_chttp2_transport(
-          &exec_ctx, server_args, endpoints.server, 0 /* is_client */);
+          server_args, endpoints.server, 0 /* is_client */);
 
       grpc_pollset** pollsets;
       size_t num_pollsets = 0;
       grpc_server_get_pollsets(server_->c_server(), &pollsets, &num_pollsets);
 
       for (size_t i = 0; i < num_pollsets; i++) {
-        grpc_endpoint_add_to_pollset(&exec_ctx, endpoints.server, pollsets[i]);
+        grpc_endpoint_add_to_pollset(endpoints.server, pollsets[i]);
       }
 
-      grpc_server_setup_transport(&exec_ctx, server_->c_server(), transport,
-                                  NULL, server_args);
-      grpc_chttp2_transport_start_reading(&exec_ctx, transport, NULL);
+      grpc_server_setup_transport(server_->c_server(), transport, NULL,
+                                  server_args);
+      grpc_chttp2_transport_start_reading(transport, NULL);
     }
 
     /* create channel */
@@ -113,16 +113,16 @@ class EndpointPairFixture {
 
       grpc_channel_args c_args = args.c_channel_args();
       grpc_transport* transport =
-          grpc_create_chttp2_transport(&exec_ctx, &c_args, endpoints.client, 1);
+          grpc_create_chttp2_transport(&c_args, endpoints.client, 1);
       GPR_ASSERT(transport);
       grpc_channel* channel = grpc_channel_create(
-          &exec_ctx, "target", &c_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
-      grpc_chttp2_transport_start_reading(&exec_ctx, transport, NULL);
+          "target", &c_args, GRPC_CLIENT_DIRECT_CHANNEL, transport);
+      grpc_chttp2_transport_start_reading(transport, NULL);
 
       channel_ = CreateChannelInternal("", channel);
     }
 
-    grpc_exec_ctx_finish(&exec_ctx);
+    grpc_exec_ctx_finish();
   }
 
   virtual ~EndpointPairFixture() {