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, 4 insertions, 6 deletions

diff --git a/src/core/lib/iomgr/endpoint_pair_windows.cc b/src/core/lib/iomgr/endpoint_pair_windows.cc
index 782fa2fd69..3355cb97b0 100644
--- a/src/core/lib/iomgr/endpoint_pair_windows.cc
+++ b/src/core/lib/iomgr/endpoint_pair_windows.cc
@@ -72,14 +72,12 @@ grpc_endpoint_pair grpc_iomgr_create_endpoint_pair(
   SOCKET sv[2];
   grpc_endpoint_pair p;
   create_sockets(sv);
-  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-  p.client = grpc_tcp_create(&exec_ctx,
-                             grpc_winsocket_create(sv[1], "endpoint:client"),
+  ExecCtx _local_exec_ctx;
+  p.client = grpc_tcp_create(grpc_winsocket_create(sv[1], "endpoint:client"),
                              channel_args, "endpoint:server");
-  p.server = grpc_tcp_create(&exec_ctx,
-                             grpc_winsocket_create(sv[0], "endpoint:server"),
+  p.server = grpc_tcp_create(grpc_winsocket_create(sv[0], "endpoint:server"),
                              channel_args, "endpoint:client");
-  grpc_exec_ctx_finish(&exec_ctx);
+  grpc_exec_ctx_finish();
   return p;
 }