looper.cpp revision 682674154e3fe88f6061245145f934f25f1a2eb8
1682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn/* 2682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * Copyright (C) 2010 The Android Open Source Project 3682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * 4682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * Licensed under the Apache License, Version 2.0 (the "License"); 5682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * you may not use this file except in compliance with the License. 6682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * You may obtain a copy of the License at 7682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * 8682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * http://www.apache.org/licenses/LICENSE-2.0 9682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * 10682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * Unless required by applicable law or agreed to in writing, software 11682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * distributed under the License is distributed on an "AS IS" BASIS, 12682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * See the License for the specific language governing permissions and 14682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn * limitations under the License. 15682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn */ 16682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 17682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn#define LOG_TAG "ALooper" 18682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn#include <utils/Log.h> 19682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 20682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn#include <android/looper.h> 21682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn#include <utils/PollLoop.h> 22682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 23682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackbornusing android::PollLoop; 24682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackbornusing android::sp; 25682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 26682674154e3fe88f6061245145f934f25f1a2eb8Dianne HackbornALooper* ALooper_forThread() { 27682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn return PollLoop::getForThread().get(); 28682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn} 29682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 30682674154e3fe88f6061245145f934f25f1a2eb8Dianne HackbornALooper* ALooper_prepare() { 31682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn sp<PollLoop> loop = PollLoop::getForThread(); 32682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn if (loop == NULL) { 33682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn loop = new PollLoop(); 34682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn PollLoop::setForThread(loop); 35682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn } 36682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn return loop.get(); 37682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn} 38682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 39682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackbornint32_t ALooper_pollOnce(int timeoutMillis) { 40682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn sp<PollLoop> loop = PollLoop::getForThread(); 41682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn if (loop == NULL) { 42682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn LOGW("ALooper_pollOnce: No looper for this thread!"); 43682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn return -1; 44682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn } 45682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn return loop->pollOnce(timeoutMillis) ? 1 : 0; 46682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn} 47682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 48682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackbornvoid ALooper_acquire(ALooper* looper) { 49682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn static_cast<PollLoop*>(looper)->incStrong((void*)ALooper_acquire); 50682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn} 51682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 52682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackbornvoid ALooper_release(ALooper* looper) { 53682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn static_cast<PollLoop*>(looper)->decStrong((void*)ALooper_acquire); 54682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn} 55682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 56682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackbornvoid ALooper_setCallback(ALooper* looper, int fd, int events, 57682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn ALooper_callbackFunc* callback, void* data) { 58682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn static_cast<PollLoop*>(looper)->setLooperCallback(fd, events, callback, data); 59682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn} 60682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn 61682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackbornint32_t ALooper_removeCallback(ALooper* looper, int fd) { 62682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn return static_cast<PollLoop*>(looper)->removeCallback(fd) ? 1 : 0; 63682674154e3fe88f6061245145f934f25f1a2eb8Dianne Hackborn} 64