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Commit cb35d441 authored by Treehugger Robot's avatar Treehugger Robot Committed by Automerger Merge Worker
Browse files

Merge "Use BinderDeathDispatcher for alarm listeners" am: da915abc 

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1715471

Change-Id: I5d0a83236a2a98a2a6235030d27a98a3fec6b084
parents 7b8b5fd6 da915abc

core/java/com/android/internal/os/BinderDeathDispatcher.java

+5 −1
Original line number Diff line number Diff line
@@ -63,6 +63,10 @@ public class BinderDeathDispatcher<T extends IInterface> { 


        @Override

        public void binderDied() {

        }



        @Override

        public void binderDied(IBinder who) {

            final ArraySet<DeathRecipient> copy;

            synchronized (mLock) {

                copy = mRecipients;
@@ -77,7 +81,7 @@ public class BinderDeathDispatcher<T extends IInterface> { 
            // Let's call it without holding the lock.

            final int size = copy.size();

            for (int i = 0; i < size; i++) {

                copy.valueAt(i).binderDied();

                copy.valueAt(i).binderDied(who);

            }

        }

    }

core/java/com/android/internal/os/TEST_MAPPING

+10 −0
Original line number Diff line number Diff line 
{

  "presubmit": [

    {

      "file_patterns": [

        "BinderDeathDispatcher\\.java"

      ],

      "name": "FrameworksCoreTests",

      "options": [

        { "include-filter": "com.android.internal.os.BinderDeathDispatcherTest" },

        { "exclude-annotation": "com.android.internal.os.SkipPresubmit" }

      ]

    },

    {

      "name": "FrameworksCoreTests",

      "options": [

core/tests/coretests/src/com/android/internal/os/BinderDeathDispatcherTest.java

+43 −19
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ package com.android.internal.os; 


import static com.google.common.truth.Truth.assertThat;



import static org.mockito.ArgumentMatchers.any;

import static org.mockito.Mockito.mock;

import static org.mockito.Mockito.reset;

import static org.mockito.Mockito.times;
@@ -31,14 +32,14 @@ import android.os.RemoteException; 
import android.os.ResultReceiver;

import android.os.ShellCallback;



import androidx.test.filters.SmallTest;

import androidx.test.runner.AndroidJUnit4;



import org.junit.Test;

import org.junit.runner.RunWith;



import java.io.FileDescriptor;



import androidx.test.filters.SmallTest;

import androidx.test.runner.AndroidJUnit4;



@SmallTest

@RunWith(AndroidJUnit4.class)

public class BinderDeathDispatcherTest {
@@ -120,7 +121,7 @@ public class BinderDeathDispatcherTest { 
        public void die() {

            isAlive = false;

            if (mRecipient != null) {

                mRecipient.binderDied();

                mRecipient.binderDied(this);

            }

            mRecipient = null;

        }
@@ -227,33 +228,33 @@ public class BinderDeathDispatcherTest { 
        // Kill the targets.



        t1.die();

        verify(r1, times(1)).binderDied();

        verify(r2, times(1)).binderDied();

        verify(r3, times(1)).binderDied();

        verify(r4, times(0)).binderDied();

        verify(r5, times(0)).binderDied();

        verify(r1, times(1)).binderDied(t1);

        verify(r2, times(1)).binderDied(t1);

        verify(r3, times(1)).binderDied(t1);

        verify(r4, times(0)).binderDied(any());

        verify(r5, times(0)).binderDied(any());



        assertThat(d.getTargetsForTest().size()).isEqualTo(2);



        reset(r1, r2, r3, r4, r5);



        t2.die();

        verify(r1, times(1)).binderDied();

        verify(r2, times(0)).binderDied();

        verify(r3, times(0)).binderDied();

        verify(r4, times(0)).binderDied();

        verify(r5, times(0)).binderDied();

        verify(r1, times(1)).binderDied(t2);

        verify(r2, times(0)).binderDied(any());

        verify(r3, times(0)).binderDied(any());

        verify(r4, times(0)).binderDied(any());

        verify(r5, times(0)).binderDied(any());



        assertThat(d.getTargetsForTest().size()).isEqualTo(1);



        reset(r1, r2, r3, r4, r5);



        t3.die();

        verify(r1, times(0)).binderDied();

        verify(r2, times(0)).binderDied();

        verify(r3, times(1)).binderDied();

        verify(r4, times(0)).binderDied();

        verify(r5, times(1)).binderDied();

        verify(r1, times(0)).binderDied(any());

        verify(r2, times(0)).binderDied(any());

        verify(r3, times(1)).binderDied(t3);

        verify(r4, times(0)).binderDied(any());

        verify(r5, times(1)).binderDied(t3);



        assertThat(d.getTargetsForTest().size()).isEqualTo(0);
@@ -262,4 +263,27 @@ public class BinderDeathDispatcherTest { 


        assertThat(d.getTargetsForTest().size()).isEqualTo(0);

    }



    @Test

    public void duplicateRegistrations() {

        BinderDeathDispatcher<MyTarget> d = new BinderDeathDispatcher<>();



        MyTarget t1 = new MyTarget();



        DeathRecipient r1 = mock(DeathRecipient.class);

        DeathRecipient r2 = mock(DeathRecipient.class);



        for (int i = 0; i < 5; i++) {

            assertThat(d.linkToDeath(t1, r1)).isEqualTo(1);

        }

        assertThat(d.linkToDeath(t1, r2)).isEqualTo(2);



        t1.die();

        verify(r1, times(1)).binderDied(t1);

        verify(r2, times(1)).binderDied(t1);



        d.unlinkToDeath(t1, r1);

        d.unlinkToDeath(t1, r2);

        assertThat(d.getTargetsForTest()).isEmpty();

    }

}

services/core/java/com/android/server/AlarmManagerService.java

+9 −3
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ import android.util.proto.ProtoOutputStream; 


import com.android.internal.annotations.GuardedBy;

import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.os.BinderDeathDispatcher;

import com.android.internal.util.ArrayUtils;

import com.android.internal.util.DumpUtils;

import com.android.internal.util.FrameworkStatsLog;
@@ -176,6 +177,8 @@ class AlarmManagerService extends SystemService { 
                    .addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING

                            | Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND);



    private static final BinderDeathDispatcher<IAlarmListener> sListenerDeathDispatcher =

            new BinderDeathDispatcher<>();

    final LocalLog mLog = new LocalLog(TAG);



    AppOpsManager mAppOps;
@@ -1701,9 +1704,8 @@ class AlarmManagerService extends SystemService { 
        }



        if (directReceiver != null) {

            try {

                directReceiver.asBinder().linkToDeath(mListenerDeathRecipient, 0);

            } catch (RemoteException e) {

            if (sListenerDeathDispatcher.linkToDeath(directReceiver, mListenerDeathRecipient)

                    <= 0) {

                Slog.w(TAG, "Dropping unreachable alarm listener " + listenerTag);

                return;

            }
@@ -2464,6 +2466,10 @@ class AlarmManagerService extends SystemService { 
            pw.println("]");

            pw.println();



            pw.println("Listener death dispatcher state:");

            sListenerDeathDispatcher.dump(pw, "  ");

            pw.println();



            if (mLog.dump(pw, "  Recent problems", "    ")) {

                pw.println();

            }