72 lines
2.3 KiB
Java
72 lines
2.3 KiB
Java
/*
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* Copyright (C) 2010, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.sip;
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import android.os.PowerManager;
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import android.util.Log;
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import java.util.HashSet;
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class SipWakeLock {
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private static final boolean DEBUGV = SipService.DEBUGV;
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private static final String TAG = SipService.TAG;
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private PowerManager mPowerManager;
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private PowerManager.WakeLock mWakeLock;
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private PowerManager.WakeLock mTimerWakeLock;
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private HashSet<Object> mHolders = new HashSet<Object>();
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SipWakeLock(PowerManager powerManager) {
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mPowerManager = powerManager;
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}
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synchronized void reset() {
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mHolders.clear();
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release(null);
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if (DEBUGV) Log.v(TAG, "~~~ hard reset wakelock");
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}
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synchronized void acquire(long timeout) {
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if (mTimerWakeLock == null) {
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mTimerWakeLock = mPowerManager.newWakeLock(
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PowerManager.PARTIAL_WAKE_LOCK, "SipWakeLock.timer");
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mTimerWakeLock.setReferenceCounted(true);
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}
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mTimerWakeLock.acquire(timeout);
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}
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synchronized void acquire(Object holder) {
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mHolders.add(holder);
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if (mWakeLock == null) {
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mWakeLock = mPowerManager.newWakeLock(
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PowerManager.PARTIAL_WAKE_LOCK, "SipWakeLock");
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}
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if (!mWakeLock.isHeld()) mWakeLock.acquire();
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if (DEBUGV) Log.v(TAG, "acquire wakelock: holder count="
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+ mHolders.size());
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}
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synchronized void release(Object holder) {
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mHolders.remove(holder);
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if ((mWakeLock != null) && mHolders.isEmpty()
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&& mWakeLock.isHeld()) {
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mWakeLock.release();
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}
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if (DEBUGV) Log.v(TAG, "release wakelock: holder count="
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+ mHolders.size());
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}
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}
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