commit fd34a9310659aa53e9e10d6826651577a75f6447
author Phil Burk <philburk@google.com> Wed Jul 19 07:03:52 2017 -0700
committer Phil Burk <philburk@google.com> Thu Jul 20 16:10:41 2017 -0700
tree dc284d0eb17cbd8a023a2aec52d854c809b02c38
parent 679b6f6eaaeba35fcf96cb04a784308211d4b319

aaudio: reduce glitching by improving sleep timing

ALways sleep a minimum time to avoid busy wait in real-time thread.
Account for wakeup jitter in threads on the other side of a FIFO.
Avoid race condition that caused a longer sleep than necessary.
Fix calculation of mFreeRunning for capture mode.

Also added systrace logging, which was used to debug this.

Bug: 63814792
Test: Run GStomper on Walleye with MMAP on, see bug
Change-Id: I7b20098580ff454365425bd21e43c17ade532a0a

services/oboeservice/AAudioServiceStreamMMAP.cpp

diff --git a/services/oboeservice/AAudioServiceStreamMMAP.cpp b/services/oboeservice/AAudioServiceStreamMMAP.cpp
index afa2ff0..ff02c0f 100644
--- a/services/oboeservice/AAudioServiceStreamMMAP.cpp
+++ b/services/oboeservice/AAudioServiceStreamMMAP.cpp
@@ -154,7 +154,7 @@
               status);
         return AAUDIO_ERROR_UNAVAILABLE;
     } else {
-        ALOGD("createMmapBuffer status %d, buffer_size, %d burst_size %d"
+        ALOGD("createMmapBuffer status = %d, buffer_size = %d, burst_size %d"
                 ", Sharable FD: %s",
               status,
               abs(mMmapBufferinfo.buffer_size_frames),