| /* |
| * Copyright (C) 2010, 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.server.sip; |
| |
| import android.os.PowerManager; |
| import android.util.Log; |
| |
| import java.util.HashSet; |
| |
| class SipWakeLock { |
| private static final boolean DEBUG = false; |
| private static final String TAG = "SipWakeLock"; |
| private PowerManager mPowerManager; |
| private PowerManager.WakeLock mWakeLock; |
| private PowerManager.WakeLock mTimerWakeLock; |
| private HashSet<Object> mHolders = new HashSet<Object>(); |
| |
| SipWakeLock(PowerManager powerManager) { |
| mPowerManager = powerManager; |
| } |
| |
| synchronized void reset() { |
| if (DEBUG) Log.v(TAG, "reset count=" + mHolders.size()); |
| mHolders.clear(); |
| release(null); |
| } |
| |
| synchronized void acquire(long timeout) { |
| if (mTimerWakeLock == null) { |
| mTimerWakeLock = mPowerManager.newWakeLock( |
| PowerManager.PARTIAL_WAKE_LOCK, "SipWakeLock.timer"); |
| mTimerWakeLock.setReferenceCounted(true); |
| } |
| mTimerWakeLock.acquire(timeout); |
| } |
| |
| synchronized void acquire(Object holder) { |
| mHolders.add(holder); |
| if (mWakeLock == null) { |
| mWakeLock = mPowerManager.newWakeLock( |
| PowerManager.PARTIAL_WAKE_LOCK, "SipWakeLock"); |
| } |
| if (!mWakeLock.isHeld()) mWakeLock.acquire(); |
| if (DEBUG) Log.v(TAG, "acquire count=" + mHolders.size()); |
| } |
| |
| synchronized void release(Object holder) { |
| mHolders.remove(holder); |
| if ((mWakeLock != null) && mHolders.isEmpty() |
| && mWakeLock.isHeld()) { |
| mWakeLock.release(); |
| } |
| if (DEBUG) Log.v(TAG, "release count=" + mHolders.size()); |
| } |
| } |