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Commit 2853f31d authored by Isak Evaldsson's avatar Isak Evaldsson Committed by Snild Dolkow
Browse files

Looper: Add global and per process override for slow message threshold 

Adds the log.looper.any.main.slow and log.looper.<PID>.any.slow
sysprops, which allows a global slow dispatch/delivery threshold to be
set for all running main loopers, as well as a threshold for all threads
within the process.

Having a single propery instead of needing to lookup uids for all apps
and then setting a threshold property for each thread makes manual
testing and debugging for slow looper messages easier.

Bug: 326356810
Test: manual - Setprop log.looper.slow.all_processes and observe log
Change-Id: I6fdb8b1ef51eedb6160963bef0e4b17eb2ea5494
parent 2daef7f6

core/java/android/os/Looper.java

+17 −0
Original line number Diff line number Diff line
@@ -322,6 +322,23 @@ public final class Looper { 


    @android.ravenwood.annotation.RavenwoodReplace

    private static int getThresholdOverride() {

        // Allow overriding the threshold for all processes' main looper with a system prop.

        // e.g. adb shell 'setprop log.looper.any.main.slow 1 && stop && start'

        if (myLooper() == getMainLooper()) {

            final int globalOverride = SystemProperties.getInt("log.looper.any.main.slow", -1);

            if (globalOverride >= 0) {

                return globalOverride;

            }

        }



        // Allow overriding the threshold for all threads within a process with a system prop.

        // e.g. adb shell 'setprop log.looper.1000.any.slow 1 && stop && start'

        final int processOverride = SystemProperties.getInt("log.looper."

                + Process.myUid() + ".any.slow", -1);

        if (processOverride >= 0) {

            return processOverride;

        }



        return SystemProperties.getInt("log.looper."

                + Process.myUid() + "."

                + Thread.currentThread().getName()