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, 2 deletions

diff --git a/src/core/lib/backoff/backoff.h b/src/core/lib/backoff/backoff.h
index 80e49ea52a..c48483758e 100644
--- a/src/core/lib/backoff/backoff.h
+++ b/src/core/lib/backoff/backoff.h
@@ -51,9 +51,9 @@ void grpc_backoff_init(grpc_backoff *backoff,
                        grpc_millis max_timeout_millis);
 
 /// Begin retry loop: returns a timespec for the NEXT retry
-grpc_millis grpc_backoff_begin(grpc_exec_ctx *exec_ctx, grpc_backoff *backoff);
+grpc_millis grpc_backoff_begin(grpc_backoff *backoff);
 /// Step a retry loop: returns a timespec for the NEXT retry
-grpc_millis grpc_backoff_step(grpc_exec_ctx *exec_ctx, grpc_backoff *backoff);
+grpc_millis grpc_backoff_step(grpc_backoff *backoff);
 /// Reset the backoff, so the next grpc_backoff_step will be a
 /// grpc_backoff_begin
 /// instead