Commit 51e73d36 authored Mar 21, 2024 by Andy Hung

TimeCheck: Track waiting through thread join in AudioFlinger

The TimeCheck watchdog is used to diagnose binder stalls.
When one occurs, it does a thread-wait analysis, tracking
downstream to the ultimate thread the target is blocked on.

We add thread join diagnostic tracing in AudioFlinger
ThreadBase::exit().

Test: atest CtsMediaAudioTestCases
Bug: 328693634
Change-Id: Id633d1371c6aedd111a04510c49e95729a0c7790

parent a7ebac08

services/audioflinger/Threads.cpp

+4 −0

Original line number	Diff line number	Diff line
		@@ -694,6 +694,10 @@ void ThreadBase::exit()
		}
		// When Thread::requestExitAndWait is made virtual and this method is renamed to
		// "virtual status_t requestExitAndWait()", replace by "return Thread::requestExitAndWait();"

		// For TimeCheck: track waiting on the thread join of getTid().
		audio_utils::mutex::scoped_join_wait_check sjw(getTid());

		requestExitAndWait();
		}