commit a8115dc6d814c18d1ec68067425485add3ea1af2
author Andy Hung <hunga@google.com> Fri Aug 24 15:51:59 2018 -0700
committer Andy Hung <hunga@google.com> Tue Aug 28 15:46:05 2018 -0700
tree 2bed9bcf27ad65a7495f82d59ac259a0072647ff
parent 51eb281710acec50c28306e03155224cf5198aad

AudioFlinger: Add Thread history to dumpsys

Test: Bluetooth + audioflinger dumpsys
Bug: 80155745
Change-Id: Icee723a9fe653395119dd639883be5b7d8f3f158

services/audioflinger/AudioFlinger.cpp

diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index ed2b3c0..9e4d739 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -56,6 +56,7 @@
 #include <system/audio_effects/effect_ns.h>
 #include <system/audio_effects/effect_aec.h>
 
+#include <audio_utils/FdToString.h>
 #include <audio_utils/primitives.h>
 
 #include <json/json.h>
@@ -525,6 +526,12 @@
         dumpLogger(mAppSetParameterLog, "App");
         dumpLogger(mSystemSetParameterLog, "System");
 
+        // dump historical threads in the last 10 seconds
+        const std::string threadLog = mThreadLog.dumpToString(
+                "Historical Thread Log ", 0 /* lines */,
+                audio_utils_get_real_time_ns() - 10 * 60 * NANOS_PER_SECOND);
+        write(fd, threadLog.c_str(), threadLog.size());
+
         BUFLOG_RESET;
 
         if (locked) {
@@ -2291,6 +2298,16 @@
         if (playbackThread != NULL) {
             ALOGV("closeOutput() %d", output);
 
+            {
+                // Dump thread before deleting for history
+                audio_utils::FdToString fdToString;
+                const int fd = fdToString.fd();
+                if (fd >= 0) {
+                    playbackThread->dump(fd, {} /* args */);
+                    mThreadLog.logs(-1 /* time */, fdToString.getStringAndClose());
+                }
+            }
+
             if (playbackThread->type() == ThreadBase::MIXER) {
                 for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
                     if (mPlaybackThreads.valueAt(i)->isDuplicating()) {