| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui.util.leak; |
| |
| |
| import android.os.Build; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.SystemProperties; |
| import android.provider.Settings; |
| import android.support.annotation.VisibleForTesting; |
| |
| import com.android.systemui.Dependency; |
| import com.android.systemui.SystemUI; |
| |
| public class GarbageMonitor { |
| |
| private static final String TAG = "GarbageMonitor"; |
| |
| private static final long GARBAGE_INSPECTION_INTERVAL = 5 * 60 * 1000; // 5min |
| private static final int GARBAGE_ALLOWANCE = 5; |
| |
| private final Handler mHandler; |
| private final TrackedGarbage mTrackedGarbage; |
| private final LeakReporter mLeakReporter; |
| |
| public GarbageMonitor(Looper bgLooper, LeakDetector leakDetector, |
| LeakReporter leakReporter) { |
| mHandler = bgLooper != null ? new Handler(bgLooper): null; |
| mTrackedGarbage = leakDetector.getTrackedGarbage(); |
| mLeakReporter = leakReporter; |
| } |
| |
| public void start() { |
| if (mTrackedGarbage == null) { |
| return; |
| } |
| |
| scheduleInspectGarbage(this::inspectGarbage); |
| } |
| |
| @VisibleForTesting |
| void scheduleInspectGarbage(Runnable runnable) { |
| mHandler.postDelayed(runnable, GARBAGE_INSPECTION_INTERVAL); |
| } |
| |
| private void inspectGarbage() { |
| if (mTrackedGarbage.countOldGarbage() > GARBAGE_ALLOWANCE) { |
| Runtime.getRuntime().gc(); |
| |
| // Allow some time to for ReferenceQueue to catch up. |
| scheduleReinspectGarbage(this::reinspectGarbageAfterGc); |
| } |
| scheduleInspectGarbage(this::inspectGarbage); |
| } |
| |
| @VisibleForTesting |
| void scheduleReinspectGarbage(Runnable runnable) { |
| mHandler.postDelayed(runnable, (long) 100); |
| } |
| |
| private void reinspectGarbageAfterGc() { |
| int count = mTrackedGarbage.countOldGarbage(); |
| if (count > GARBAGE_ALLOWANCE) { |
| mLeakReporter.dumpLeak(count); |
| } |
| } |
| |
| public static class Service extends SystemUI { |
| |
| // TODO(b/35345376): Turn this back on for debuggable builds after known leak fixed. |
| private static final boolean ENABLED = Build.IS_DEBUGGABLE |
| && SystemProperties.getBoolean("debug.enable_leak_reporting", false); |
| private static final String FORCE_ENABLE = "sysui_force_garbage_monitor"; |
| |
| private GarbageMonitor mGarbageMonitor; |
| |
| @Override |
| public void start() { |
| boolean forceEnable = Settings.Secure.getInt(mContext.getContentResolver(), |
| FORCE_ENABLE, 0) != 0; |
| if (!ENABLED && !forceEnable) { |
| return; |
| } |
| mGarbageMonitor = Dependency.get(GarbageMonitor.class); |
| mGarbageMonitor.start(); |
| } |
| } |
| } |