commit 99c99d00beb43b939dedc9ffb07adb89f6a85ba5
author Glenn Kasten <gkasten@google.com> Mon May 14 16:37:13 2012 -0700
committer Glenn Kasten <gkasten@google.com> Thu May 17 16:29:07 2012 -0700
tree a93aeb409fa2399bf552ea901793514f0cf79f6b
parent 552477608b137fb66af126655c6865207a82d888

systrace for audio

Trace fast track buffer fill status for underruns etc.

Move the definition of macro to Android.mk.

No overhead if disabled.

Change-Id: If0e83e21b61b059ca38f543f8a6ffb58e08c79ee

services/audioflinger/AudioFlinger.cpp

diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 7e15823..339f6ea 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -19,8 +19,6 @@
 #define LOG_TAG "AudioFlinger"
 //#define LOG_NDEBUG 0
 
-//#define ATRACE_TAG ATRACE_TAG_AUDIO
-
 #include <math.h>
 #include <signal.h>
 #include <sys/time.h>
@@ -2557,7 +2555,9 @@
             if (!mStandby && delta > maxPeriod) {
                 mNumDelayedWrites++;
                 if ((now - lastWarning) > kWarningThrottleNs) {
+#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
                     ScopedTrace st(ATRACE_TAG, "underrun");
+#endif
                     ALOGW("write blocked for %llu msecs, %d delayed writes, thread %p",
                             ns2ms(delta), mNumDelayedWrites, this);
                     lastWarning = now;
@@ -2652,9 +2652,13 @@
 
 #define mBitShift 2 // FIXME
     size_t count = mixBufferSize >> mBitShift;
+#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
     Tracer::traceBegin(ATRACE_TAG, "write");
+#endif
     ssize_t framesWritten = mNormalSink->write(mMixBuffer, count);
+#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
     Tracer::traceEnd(ATRACE_TAG);
+#endif
     if (framesWritten > 0) {
         size_t bytesWritten = framesWritten << mBitShift;
         mBytesWritten += bytesWritten;