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
HandlerThread()21 HandlerThread::HandlerThread()
22 : mShouldQuit(false) {
23
24 }
25
~HandlerThread()26 HandlerThread::~HandlerThread() {
27 quit();
28 }
29
getLooper()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
start(const char * name,int32_t priority,size_t stack)38 status_t HandlerThread::start(const char* name, int32_t priority, size_t stack) {
39 return run(name, priority, stack);
40 }
41
quit()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
threadLoop()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