The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.internal.os; |
| 18 | |
| 19 | import android.os.Binder; |
| 20 | import android.os.IBinder; |
| 21 | import android.os.SystemClock; |
| 22 | import android.util.Config; |
| 23 | import android.util.EventLog; |
| 24 | import android.util.Log; |
| 25 | |
| 26 | import java.io.FileDescriptor; |
| 27 | import java.io.FileOutputStream; |
| 28 | import java.io.IOException; |
| 29 | import java.io.PrintWriter; |
| 30 | import java.lang.ref.WeakReference; |
| 31 | import java.lang.reflect.Modifier; |
| 32 | |
| 33 | /** |
| 34 | * Private and debugging Binder APIs. |
| 35 | * |
| 36 | * @see IBinder |
| 37 | */ |
| 38 | public class BinderInternal { |
| 39 | static WeakReference<GcWatcher> mGcWatcher |
| 40 | = new WeakReference<GcWatcher>(new GcWatcher()); |
| 41 | static long mLastGcTime; |
| 42 | |
| 43 | static final class GcWatcher { |
| 44 | @Override |
| 45 | protected void finalize() throws Throwable { |
| 46 | handleGc(); |
| 47 | mLastGcTime = SystemClock.uptimeMillis(); |
| 48 | mGcWatcher = new WeakReference<GcWatcher>(new GcWatcher()); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Add the calling thread to the IPC thread pool. This function does |
| 54 | * not return until the current process is exiting. |
| 55 | */ |
| 56 | public static final native void joinThreadPool(); |
| 57 | |
| 58 | /** |
| 59 | * Return the system time (as reported by {@link SystemClock#uptimeMillis |
| 60 | * SystemClock.uptimeMillis()}) that the last garbage collection occurred |
| 61 | * in this process. This is not for general application use, and the |
| 62 | * meaning of "when a garbage collection occurred" will change as the |
| 63 | * garbage collector evolves. |
| 64 | * |
| 65 | * @return Returns the time as per {@link SystemClock#uptimeMillis |
| 66 | * SystemClock.uptimeMillis()} of the last garbage collection. |
| 67 | */ |
| 68 | public static long getLastGcTime() { |
| 69 | return mLastGcTime; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Return the global "context object" of the system. This is usually |
| 74 | * an implementation of IServiceManager, which you can use to find |
| 75 | * other services. |
| 76 | */ |
| 77 | public static final native IBinder getContextObject(); |
| 78 | |
Dianne Hackborn | 887f355 | 2009-12-07 17:59:37 -0800 | [diff] [blame^] | 79 | /** |
| 80 | * Special for system process to not allow incoming calls to run at |
| 81 | * background scheduling priority. |
| 82 | * @hide |
| 83 | */ |
| 84 | public static final native void disableBackgroundScheduling(boolean disable); |
| 85 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 86 | static native final void handleGc(); |
| 87 | |
| 88 | public static void forceGc(String reason) { |
| 89 | EventLog.writeEvent(2741, reason); |
| 90 | Runtime.getRuntime().gc(); |
| 91 | } |
| 92 | |
| 93 | static void forceBinderGc() { |
| 94 | forceGc("Binder"); |
| 95 | } |
| 96 | } |