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 22 namespace android { 23 24 class Pipe { 25 public: 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 59 class DelayedTask : public Thread { 60 int mDelayMillis; 61 62 public: 63 DelayedTask(int delayMillis) : mDelayMillis(delayMillis) { } 64 65 protected: 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
