alcDeviceResumeSOFT Crashes on Android

[NatWobble]

Hi. We are getting quite a few crashes with the following trace on the Google Play console for Android but they are difficult to reproduce:

backtrace:
#00 pc 00000000001d20da /data/app/com.wobblemonkey.speedygram-1/lib/arm/libgideros.so
#1 pc 00000000001c6e85 /data/app/com.wobblemonkey.speedygram-1/lib/arm/libgideros.so (alcDeviceResumeSOFT+132)
#2 pc 0000000000096e71 /data/app/com.wobblemonkey.speedygram-1/lib/arm/libgideros.so (_ZN18ApplicationManager6resumeEv+28)
#3 pc 00000000006e1285 /data/app/com.wobblemonkey.speedygram-1/oat/arm/base.odex

Android versions 6-8 are affected. Our last release used Gideros 2018.09 but older versions of our app using older versions of Gideros also produce this crash. It seems to be related to resuming.

We also get a few ANRs related to pausing. I am not sure whether they are related to the resuming issue but the GP trace is more detailed for ANRs:

"main" prio=5 tid=1 Blocked
| group="main" sCount=1 dsCount=0 flags=1 obj=0x745af638 self=0xed3fc000
| sysTid=1159 nice=0 cgrp=default sched=0/0 handle=0xf18a94bc
| state=S schedstat=( 803514127 245163664 1571 ) utm=51 stm=29 core=0 HZ=100
| stack=0xff650000-0xff652000 stackSize=8MB
| held mutexes=

#00 pc 0000000000018eac /system/lib/libc.so (syscall+28)

#1 pc 00000000000b380d /system/lib/libart.so (_ZN3art17ConditionVariable16WaitHoldingLocksEPNS_6ThreadE+88)

#2 pc 00000000002c1201 /system/lib/libart.so (_ZN3art7Monitor4LockEPNS_6ThreadE+2196)

#3 pc 00000000002c23b7 /system/lib/libart.so (_ZN3art7Monitor4WaitEPNS_6ThreadExibNS_11ThreadStateE+990)

#4 pc 00000000002c37a3 /system/lib/libart.so (_ZN3art7Monitor4WaitEPNS_6ThreadEPNS_6mirror6ObjectExibNS_11ThreadStateE+130)

#5 pc 00000000002d41d7 /system/lib/libart.so (_ZN3artL13Object_waitJIEP7_JNIEnvP8_jobjectxi+36)

#6 pc 000000000000089d /system/framework/arm/boot.oat (Java_java_lang_Object_wait__JI+92)

at java.lang.Object.wait (Native method)

• waiting to lock <0x0ae28ea4> (a java.util.ArrayList) held by thread 11

  at java.lang.Object.wait (Object.java:422)

  at com.giderosmobile.android.player.GiderosApplication.onPause (GiderosApplication.java:547)

• locked <0x0ae28ea4> (a java.util.ArrayList)

  at com.giderosmobile.android.SpeedyGramActivity.onPause (SpeedyGramActivity.java:179)

  at android.app.Activity.performPause (Activity.java:7408)

  at android.app.Instrumentation.callActivityOnPause (Instrumentation.java:1415)

  at android.app.ActivityThread.performPauseActivityIfNeeded (ActivityThread.java:4115)

  at android.app.ActivityThread.performPauseActivity (ActivityThread.java:4092)

  at android.app.ActivityThread.performPauseActivity (ActivityThread.java:4066)

  at android.app.ActivityThread.handlePauseActivity (ActivityThread.java:4040)

  at android.app.ActivityThread.-wrap16 (ActivityThread.java)

  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1708)

  at android.os.Handler.dispatchMessage (Handler.java:105)

  at android.os.Looper.loop (Looper.java:164)

  at android.app.ActivityThread.main (ActivityThread.java:6942)

  at java.lang.reflect.Method.invoke (Native method)

  at com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:327)

  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1374)
  "GLThread 16338" tid=11 Native
  "GLThread 16338" prio=5 tid=11 Native
  | group="main" sCount=1 dsCount=0 flags=1 obj=0x13900988 self=0xe5288000
  | sysTid=1227 nice=0 cgrp=default sched=0/0 handle=0xcdc13970
  | state=R schedstat=( 14998215704 2609272120 5682 ) utm=311 stm=1188 core=2 HZ=100
  | stack=0xcdb11000-0xcdb13000 stackSize=1038KB
  | held mutexes=

  #00 pc 000000000004b310 /system/lib/libc.so (sched_yield+12)

  Player - New Features #1 pc 00000000001d2465 /data/app/com.wobblemonkey.speedygram-Bp_9TIkT0IrIHoSXS1VH8Q==/lib/arm/libgideros.so (???)

  Additional Player resolutions with Retina support #2 pc 00000000001c6d99 /data/app/com.wobblemonkey.speedygram-Bp_9TIkT0IrIHoSXS1VH8Q==/lib/arm/libgideros.so (alcDevicePauseSOFT+112)

  move touch event from viewcontroller to view #3 pc 0000000000096e1f /data/app/com.wobblemonkey.speedygram-Bp_9TIkT0IrIHoSXS1VH8Q==/lib/arm/libgideros.so (_ZN18ApplicationManager5pauseEv+102)

  Minor improvement on Preview Widget #4 pc 0000000000004b9f /data/app/com.wobblemonkey.speedygram-Bp_9TIkT0IrIHoSXS1VH8Q==/oat/arm/base.odex (Java_com_giderosmobile_android_player_GiderosApplication_nativePause__+94)

  at com.giderosmobile.android.player.GiderosApplication.nativePause (Native method)

  at com.giderosmobile.android.player.GiderosApplication.onDrawFrame (GiderosApplication.java:668)

• locked <0x040bf110> (a java.lang.Object)

  at com.giderosmobile.android.GiderosRenderer.onDrawFrame (SpeedyGramActivity.java:415)

  at android.opengl.GLSurfaceView$GLThread.guardedRun (GLSurfaceView.java:1571)

  at android.opengl.GLSurfaceView$GLThread.run (GLSurfaceView.java:1270)

[NatWobble]

Also these traces:

backtrace:
#00 pc 000000000026fff4 /data/app/com.wobblemonkey.speedygram-DokJSXGfSemTnVK0B2YfiQ==/lib/arm64/libgideros.so
#1 pc 000000000025ec1c /data/app/com.wobblemonkey.speedygram-DokJSXGfSemTnVK0B2YfiQ==/lib/arm64/libgideros.so (alcDeviceResumeSOFT+340)
#2 pc 00000000000c4648 /data/app/com.wobblemonkey.speedygram-DokJSXGfSemTnVK0B2YfiQ==/lib/arm64/libgideros.so (ApplicationManager::resume()+44)
#3 pc 0000000000032610 /data/app/com.wobblemonkey.speedygram-DokJSXGfSemTnVK0B2YfiQ==/oat/arm64/base.odex

backtrace:

#00 pc 00000000000e00d4 /data/app/com.wobblemonkey.speedygram-4tMptSwVdgeqDU2Ueu325w==/lib/arm64/libgideros.so (gapplication_enqueueEvent+20)
#1 pc 00000000000c4818 /data/app/com.wobblemonkey.speedygram-4tMptSwVdgeqDU2Ueu325w==/lib/arm64/libgideros.so (_ZN18ApplicationManager10backgroundEv+48)
#2 pc 0000000000051d50 /data/app/com.wobblemonkey.speedygram-4tMptSwVdgeqDU2Ueu325w==/oat/arm64/base.odex