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, 3 insertions, 4 deletions

diff --git a/src/core/ext/filters/client_channel/resolver_registry.h b/src/core/ext/filters/client_channel/resolver_registry.h
index 06d0b99a35..8028349861 100644
--- a/src/core/ext/filters/client_channel/resolver_registry.h
+++ b/src/core/ext/filters/client_channel/resolver_registry.h
@@ -52,7 +52,7 @@ void grpc_register_resolver_type(grpc_resolver_factory *factory);
     (typically the set of arguments passed in from the client API).
     \a pollset_set is used to drive IO in the name resolution process, it
     should not be NULL. */
-grpc_resolver *grpc_resolver_create(grpc_exec_ctx *exec_ctx, const char *target,
+grpc_resolver *grpc_resolver_create(const char *target,
                                     const grpc_channel_args *args,
                                     grpc_pollset_set *pollset_set,
                                     grpc_combiner *combiner);
@@ -63,12 +63,11 @@ grpc_resolver_factory *grpc_resolver_factory_lookup(const char *name);
 
 /** Given a target, return a (freshly allocated with gpr_malloc) string
     representing the default authority to pass from a client. */
-char *grpc_get_default_authority(grpc_exec_ctx *exec_ctx, const char *target);
+char *grpc_get_default_authority(const char *target);
 
 /** Returns a newly allocated string containing \a target, adding the
     default prefix if needed. */
-char *grpc_resolver_factory_add_default_prefix_if_needed(
-    grpc_exec_ctx *exec_ctx, const char *target);
+char *grpc_resolver_factory_add_default_prefix_if_needed(const char *target);
 
 #ifdef __cplusplus
 }