1 /* 2 * Copyright (C) 2016 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 #include "HandlerThread.h" 18 19 namespace android { 20 21 HandlerThread::HandlerThread() 22 : mShouldQuit(false) { 23 24 } 25 26 HandlerThread::~HandlerThread() { 27 quit(); 28 } 29 30 sp<Looper> HandlerThread::getLooper() { 31 Mutex::Autolock autoLock(mLock); 32 if (mLooper.get() == 0) { 33 mLooperWait.wait(mLock); 34 } 35 return mLooper; 36 } 37 38 status_t HandlerThread::start(const char* name, int32_t priority, size_t stack) { 39 return run(name, priority, stack); 40 } 41 42 void HandlerThread::quit() { 43 if (!isRunning()) { 44 return; 45 } 46 sp<Looper> looper = getLooper(); 47 mLock.lock(); 48 mShouldQuit = true; 49 mLock.unlock(); 50 looper->wake(); 51 requestExitAndWait(); 52 } 53 54 bool HandlerThread::threadLoop() { 55 mLock.lock(); 56 mLooper = Looper::prepare(0); 57 mLooperWait.broadcast(); 58 mLock.unlock(); 59 while (true) { 60 do { 61 Mutex::Autolock autoLock(mLock); 62 if (mShouldQuit) { 63 return false; 64 } 65 } while (false); 66 mLooper->pollOnce(-1); 67 } 68 return false; 69 } 70 71 72 }; 73