audioflinger: define ANDROID_SMP, remove conditional tracing

With ANDROID_SMP set, tracing functionality is completely inline, and
without the performance hits of external library calls, tracing does
not need to be conditionally compiled.

Change-Id: I4b29a9a52c403f0d2ea137c5b7bc05a518a7ca4b

1 files changed, 10 insertions, 21 deletions

diff --git a/services/audioflinger/FastMixer.cpp b/services/audioflinger/FastMixer.cpp
index 0366dfe..5e6af16 100644
--- a/services/audioflinger/FastMixer.cpp
+++ b/services/audioflinger/FastMixer.cpp
@@ -17,10 +17,7 @@
 #define LOG_TAG "FastMixer"
 //#define LOG_NDEBUG 0
 
-/** Uncomment for systrace.
- * ATRACE_TAG will default to ATRACE_TAG_NEVER in the header.
- */
-//#define ATRACE_TAG ATRACE_TAG_AUDIO
+#define ATRACE_TAG ATRACE_TAG_AUDIO
 
 #include <sys/atomics.h>
 #include <time.h>
@@ -376,14 +373,14 @@ bool FastMixer::threadLoop()
                 // up to 1 ms.  If enough active tracks all blocked in sequence, this would result
                 // in the overall fast mix cycle being delayed.  Should use a non-blocking FIFO.
                 size_t framesReady = fastTrack->mBufferProvider->framesReady();
-#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
-                // I wish we had formatted trace names
-                char traceName[16];
-                strcpy(traceName, "framesReady");
-                traceName[11] = i + (i < 10 ? '0' : 'A' - 10);
-                traceName[12] = '\0';
-                ATRACE_INT(traceName, framesReady);
-#endif
+                if (ATRACE_ENABLED()) {
+                    // I wish we had formatted trace names
+                    char traceName[16];
+                    strcpy(traceName, "framesReady");
+                    traceName[11] = i + (i < 10 ? '0' : 'A' - 10);
+                    traceName[12] = '\0';
+                    ATRACE_INT(traceName, framesReady);
+                }
                 FastTrackDump *ftDump = &dumpState->mTracks[i];
                 FastTrackUnderruns underruns = ftDump->mUnderruns;
                 if (framesReady < frameCount) {
@@ -429,13 +426,9 @@ bool FastMixer::threadLoop()
             // FIXME write() is non-blocking and lock-free for a properly implemented NBAIO sink,
             //       but this code should be modified to handle both non-blocking and blocking sinks
             dumpState->mWriteSequence++;
-#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
             ATRACE_BEGIN("write");
-#endif
             ssize_t framesWritten = outputSink->write(mixBuffer, frameCount);
-#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
             ATRACE_END();
-#endif
             dumpState->mWriteSequence++;
             if (framesWritten >= 0) {
                 ALOG_ASSERT(framesWritten <= frameCount);
@@ -490,9 +483,7 @@ bool FastMixer::threadLoop()
                 sleepNs = -1;
               if (isWarm) {
                 if (sec > 0 || nsec > underrunNs) {
-#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
-                    ScopedTrace st(ATRACE_TAG, "underrun");
-#endif
+                    ATRACE_NAME("underrun");
                     // FIXME only log occasionally
                     ALOGV("underrun: time since last cycle %d.%03ld sec",
                             (int) sec, nsec / 1000000L);
@@ -572,10 +563,8 @@ bool FastMixer::threadLoop()
                 // this store #4 is not atomic with respect to stores #1, #2, #3 above, but
                 // the newest open and oldest closed halves are atomic with respect to each other
                 dumpState->mBounds = bounds;
-#if defined(ATRACE_TAG) && (ATRACE_TAG != ATRACE_TAG_NEVER)
                 ATRACE_INT("cycle_ms", monotonicNs / 1000000);
                 ATRACE_INT("load_us", loadNs / 1000);
-#endif
               }
 #endif
             } else {