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#ifndef TESTHELPERS_H
18#define TESTHELPERS_H
19
20#include <utils/threads.h>
21
22namespace android {
23
24class Pipe {
25public:
26    int sendFd;
27    int receiveFd;
28
29    Pipe() {
30        int fds[2];
31        ::pipe(fds);
32
33        receiveFd = fds[0];
34        sendFd = fds[1];
35    }
36
37    ~Pipe() {
38        if (sendFd != -1) {
39            ::close(sendFd);
40        }
41
42        if (receiveFd != -1) {
43            ::close(receiveFd);
44        }
45    }
46
47    status_t writeSignal() {
48        ssize_t nWritten = ::write(sendFd, "*", 1);
49        return nWritten == 1 ? 0 : -errno;
50    }
51
52    status_t readSignal() {
53        char buf[1];
54        ssize_t nRead = ::read(receiveFd, buf, 1);
55        return nRead == 1 ? 0 : nRead == 0 ? -EPIPE : -errno;
56    }
57};
58
59class DelayedTask : public Thread {
60    int mDelayMillis;
61
62public:
63    DelayedTask(int delayMillis) : mDelayMillis(delayMillis) { }
64
65protected:
66    virtual ~DelayedTask() { }
67
68    virtual void doTask() = 0;
69
70    virtual bool threadLoop() {
71        usleep(mDelayMillis * 1000);
72        doTask();
73        return false;
74    }
75};
76
77} // namespace android
78
79#endif // TESTHELPERS_H
80