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/lockfree_event.h b/src/core/lib/iomgr/lockfree_event.h
index 02229e569e..cf681fc874 100644
--- a/src/core/lib/iomgr/lockfree_event.h
+++ b/src/core/lib/iomgr/lockfree_event.h
@@ -33,13 +33,11 @@ void grpc_lfev_init(gpr_atm *state);
 void grpc_lfev_destroy(gpr_atm *state);
 bool grpc_lfev_is_shutdown(gpr_atm *state);
 
-void grpc_lfev_notify_on(grpc_exec_ctx *exec_ctx, gpr_atm *state,
-                         grpc_closure *closure, const char *variable);
-/* Returns true on first successful shutdown */
-bool grpc_lfev_set_shutdown(grpc_exec_ctx *exec_ctx, gpr_atm *state,
-                            grpc_error *shutdown_err);
-void grpc_lfev_set_ready(grpc_exec_ctx *exec_ctx, gpr_atm *state,
+void grpc_lfev_notify_on(gpr_atm *state, grpc_closure *closure,
                          const char *variable);
+/* Returns true on first successful shutdown */
+bool grpc_lfev_set_shutdown(gpr_atm *state, grpc_error *shutdown_err);
+void grpc_lfev_set_ready(gpr_atm *state, const char *variable);
 
 #ifdef __cplusplus
 }