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/*
* Copyright (C) 2008 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.internal.os;
import android.os.IBinder;
import android.os.SystemClock;
import android.util.EventLog;
import java.lang.ref.WeakReference;
/**
* Private and debugging Binder APIs.
*
* @see IBinder
*/
public class BinderInternal {
static WeakReference<GcWatcher> mGcWatcher
= new WeakReference<GcWatcher>(new GcWatcher());
static long mLastGcTime;
static final class GcWatcher {
@Override
protected void finalize() throws Throwable {
handleGc();
mLastGcTime = SystemClock.uptimeMillis();
mGcWatcher = new WeakReference<GcWatcher>(new GcWatcher());
}
}
/**
* Add the calling thread to the IPC thread pool. This function does
* not return until the current process is exiting.
*/
public static final native void joinThreadPool();
/**
* Return the system time (as reported by {@link SystemClock#uptimeMillis
* SystemClock.uptimeMillis()}) that the last garbage collection occurred
* in this process. This is not for general application use, and the
* meaning of "when a garbage collection occurred" will change as the
* garbage collector evolves.
*
* @return Returns the time as per {@link SystemClock#uptimeMillis
* SystemClock.uptimeMillis()} of the last garbage collection.
*/
public static long getLastGcTime() {
return mLastGcTime;
}
/**
* Return the global "context object" of the system. This is usually
* an implementation of IServiceManager, which you can use to find
* other services.
*/
public static final native IBinder getContextObject();
/**
* Special for system process to not allow incoming calls to run at
* background scheduling priority.
* @hide
*/
public static final native void disableBackgroundScheduling(boolean disable);
static native final void handleGc();
public static void forceGc(String reason) {
EventLog.writeEvent(2741, reason);
Runtime.getRuntime().gc();
}
static void forceBinderGc() {
forceGc("Binder");
}
}
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