1/*
2 * Copyright (C) 2010 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#define LOG_TAG "ALooper"
18#include <utils/Log.h>
19
20#include <android/looper.h>
21#include <utils/Looper.h>
22#include <binder/IPCThreadState.h>
23
24using android::Looper;
25using android::sp;
26using android::IPCThreadState;
27
28static inline Looper* ALooper_to_Looper(ALooper* alooper) {
29    return reinterpret_cast<Looper*>(alooper);
30}
31
32static inline ALooper* Looper_to_ALooper(Looper* looper) {
33    return reinterpret_cast<ALooper*>(looper);
34}
35
36ALooper* ALooper_forThread() {
37    return Looper_to_ALooper(Looper::getForThread().get());
38}
39
40ALooper* ALooper_prepare(int opts) {
41    return Looper_to_ALooper(Looper::prepare(opts).get());
42}
43
44void ALooper_acquire(ALooper* looper) {
45    ALooper_to_Looper(looper)->incStrong((void*)ALooper_acquire);
46}
47
48void ALooper_release(ALooper* looper) {
49    ALooper_to_Looper(looper)->decStrong((void*)ALooper_acquire);
50}
51
52int ALooper_pollOnce(int timeoutMillis, int* outFd, int* outEvents, void** outData) {
53    sp<Looper> looper = Looper::getForThread();
54    if (looper == NULL) {
55        ALOGE("ALooper_pollOnce: No looper for this thread!");
56        return ALOOPER_POLL_ERROR;
57    }
58
59    IPCThreadState::self()->flushCommands();
60    return looper->pollOnce(timeoutMillis, outFd, outEvents, outData);
61}
62
63int ALooper_pollAll(int timeoutMillis, int* outFd, int* outEvents, void** outData) {
64    sp<Looper> looper = Looper::getForThread();
65    if (looper == NULL) {
66        ALOGE("ALooper_pollAll: No looper for this thread!");
67        return ALOOPER_POLL_ERROR;
68    }
69
70    IPCThreadState::self()->flushCommands();
71    return looper->pollAll(timeoutMillis, outFd, outEvents, outData);
72}
73
74void ALooper_wake(ALooper* looper) {
75    ALooper_to_Looper(looper)->wake();
76}
77
78int ALooper_addFd(ALooper* looper, int fd, int ident, int events,
79        ALooper_callbackFunc callback, void* data) {
80    return ALooper_to_Looper(looper)->addFd(fd, ident, events, callback, data);
81}
82
83int ALooper_removeFd(ALooper* looper, int fd) {
84    return ALooper_to_Looper(looper)->removeFd(fd);
85}
86