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, 3 deletions

diff --git a/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc b/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc
index 0133b6efa2..222f0e2615 100644
--- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc
+++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.cc
@@ -69,8 +69,7 @@ grpc_error *grpc_chttp2_rst_stream_parser_begin_frame(
   return GRPC_ERROR_NONE;
 }
 
-grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx,
-                                                void *parser,
+grpc_error *grpc_chttp2_rst_stream_parser_parse(void *parser,
                                                 grpc_chttp2_transport *t,
                                                 grpc_chttp2_stream *s,
                                                 grpc_slice slice, int is_last) {
@@ -103,7 +102,7 @@ grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx,
           GRPC_ERROR_INT_HTTP2_ERROR, (intptr_t)reason);
       gpr_free(message);
     }
-    grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, true, error);
+    grpc_chttp2_mark_stream_closed(t, s, true, true, error);
   }
 
   return GRPC_ERROR_NONE;