eightbitlab.com.blurview.RenderScriptBlur.blur ANR triggered by main thread waiting for too long

[jasondem]

Please include:

1. Library version
   version-2.0.3

2. Device and OS version
   all devices OS version are android 11,such as Vivo 1901，Galaxy A50，Realme C12，CPH2239

3. Detailed steps to reproduce the issue
   I don‘t konw how to reproduce it

4. XML layout and code for BlurView setup

5. Stacktrace in case of a crash
   

[Dimezis]

Provide the details required in the bug report.
There's not much I can do without steps to reproduce

[jasondem]

It is a bottom navigationBar, I use BulrView to achieve the bottom navigation bar frosted-glass effect, anr place in 'RenderScriptBlur.blur', is frosted-glass rendering placed in other threads can solve this problem?

[jasondem]

main (native):tid=1 systid=19015
#00 pc 0x7550c libc.so (syscall + 28)
#1 pc 0x1af800 libart.so (art::ConditionVariable::WaitHoldingLocks(art::Thread*) + 148)
#2 pc 0x669eb0 libart.so (art::GoToRunnable(art::Thread*) + 460)
#3 pc 0x669ca0 libart.so (art::JniMethodEnd(unsigned int, art::Thread*) + 28)
at android.renderscript.RenderScript.rsnScriptSetVarObj(Native method)
at android.renderscript.RenderScript.nScriptSetVarObj(RenderScript.java:832)
at android.renderscript.Script.setVar(Script.java:438)
at android.renderscript.ScriptIntrinsicBlur.setInput(ScriptIntrinsicBlur.java:70)
at eightbitlab.com.blurview.RenderScriptBlur.blur(RenderScriptBlur.java:69)
at eightbitlab.com.blurview.PreDrawBlurController.blurAndSave(PreDrawBlurController.java:172)
at eightbitlab.com.blurview.PreDrawBlurController.updateBlur(PreDrawBlurController.java:122)
at eightbitlab.com.blurview.PreDrawBlurController$1.onPreDraw(PreDrawBlurController.java:50)
at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:1093)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3451)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2257)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8796)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1161)
at android.view.Choreographer.doCallbacks(Choreographer.java:983)
at android.view.Choreographer.doFrame(Choreographer.java:908)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1146)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:263)
at android.app.ActivityThread.main(ActivityThread.java:8292)
at java.lang.reflect.Method.invoke(Native method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:612)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1006)

[Dimezis]

I don't think it's BlurView's problem.
Something is holding that lock libart waits on (WaitHoldingLocks).
Most likely it's just an unlucky coincidence that the BlurView happens to execute the blur when the lock is busy, and the root cause is elsewhere.

[jasondem]

Thank you. I'll find out if it's caused by other places.