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, 6 insertions, 7 deletions

diff --git a/src/core/ext/filters/client_channel/connector.cc b/src/core/ext/filters/client_channel/connector.cc
index c258468e58..c8bf2f3e1c 100644
--- a/src/core/ext/filters/client_channel/connector.cc
+++ b/src/core/ext/filters/client_channel/connector.cc
@@ -23,18 +23,17 @@ grpc_connector* grpc_connector_ref(grpc_connector* connector) {
   return connector;
 }
 
-void grpc_connector_unref(grpc_exec_ctx* exec_ctx, grpc_connector* connector) {
-  connector->vtable->unref(exec_ctx, connector);
+void grpc_connector_unref(grpc_connector* connector) {
+  connector->vtable->unref(connector);
 }
 
-void grpc_connector_connect(grpc_exec_ctx* exec_ctx, grpc_connector* connector,
+void grpc_connector_connect(grpc_connector* connector,
                             const grpc_connect_in_args* in_args,
                             grpc_connect_out_args* out_args,
                             grpc_closure* notify) {
-  connector->vtable->connect(exec_ctx, connector, in_args, out_args, notify);
+  connector->vtable->connect(connector, in_args, out_args, notify);
 }
 
-void grpc_connector_shutdown(grpc_exec_ctx* exec_ctx, grpc_connector* connector,
-                             grpc_error* why) {
-  connector->vtable->shutdown(exec_ctx, connector, why);
+void grpc_connector_shutdown(grpc_connector* connector, grpc_error* why) {
+  connector->vtable->shutdown(connector, why);
 }