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, 2 insertions, 4 deletions

diff --git a/src/core/ext/filters/client_channel/proxy_mapper_registry.h b/src/core/ext/filters/client_channel/proxy_mapper_registry.h
index 39c607cefc..efe1df48a6 100644
--- a/src/core/ext/filters/client_channel/proxy_mapper_registry.h
+++ b/src/core/ext/filters/client_channel/proxy_mapper_registry.h
@@ -33,14 +33,12 @@ void grpc_proxy_mapper_registry_shutdown();
 /// the list.  Otherwise, it will be added to the end.
 void grpc_proxy_mapper_register(bool at_start, grpc_proxy_mapper* mapper);
 
-bool grpc_proxy_mappers_map_name(grpc_exec_ctx* exec_ctx,
-                                 const char* server_uri,
+bool grpc_proxy_mappers_map_name(const char* server_uri,
                                  const grpc_channel_args* args,
                                  char** name_to_resolve,
                                  grpc_channel_args** new_args);
 
-bool grpc_proxy_mappers_map_address(grpc_exec_ctx* exec_ctx,
-                                    const grpc_resolved_address* address,
+bool grpc_proxy_mappers_map_address(const grpc_resolved_address* address,
                                     const grpc_channel_args* args,
                                     grpc_resolved_address** new_address,
                                     grpc_channel_args** new_args);