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, 6 insertions, 7 deletions

diff --git a/src/core/lib/iomgr/timer.h b/src/core/lib/iomgr/timer.h
index 419e834cf1..6a9c06f2ee 100644
--- a/src/core/lib/iomgr/timer.h
+++ b/src/core/lib/iomgr/timer.h
@@ -44,8 +44,8 @@ typedef struct grpc_timer grpc_timer;
    application code should check the error to determine how it was invoked. The
    application callback is also responsible for maintaining information about
    when to free up any user-level state. */
-void grpc_timer_init(grpc_exec_ctx *exec_ctx, grpc_timer *timer,
-                     grpc_millis deadline, grpc_closure *closure);
+void grpc_timer_init(grpc_timer *timer, grpc_millis deadline,
+                     grpc_closure *closure);
 
 /* Initialize *timer without setting it. This can later be passed through
    the regular init or cancel */
@@ -77,7 +77,7 @@ void grpc_timer_init_unset(grpc_timer *timer);
    matches this aim.
 
    Requires: cancel() must happen after init() on a given timer */
-void grpc_timer_cancel(grpc_exec_ctx *exec_ctx, grpc_timer *timer);
+void grpc_timer_cancel(grpc_timer *timer);
 
 /* iomgr internal api for dealing with timers */
 
@@ -94,10 +94,9 @@ typedef enum {
    *next is never guaranteed to be updated on any given execution; however,
    with high probability at least one thread in the system will see an update
    at any time slice. */
-grpc_timer_check_result grpc_timer_check(grpc_exec_ctx *exec_ctx,
-                                         grpc_millis *next);
-void grpc_timer_list_init(grpc_exec_ctx *exec_ctx);
-void grpc_timer_list_shutdown(grpc_exec_ctx *exec_ctx);
+grpc_timer_check_result grpc_timer_check(grpc_millis *next);
+void grpc_timer_list_init();
+void grpc_timer_list_shutdown();
 
 /* Consume a kick issued by grpc_kick_poller */
 void grpc_timer_consume_kick(void);