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 <unistd.h> 21 22 #include <utils/threads.h> 23 24 namespace android { 25 26 class Pipe { 27 public: 28 int sendFd; 29 int receiveFd; 30 31 Pipe() { 32 int fds[2]; 33 ::pipe(fds); 34 35 receiveFd = fds[0]; 36 sendFd = fds[1]; 37 } 38 39 ~Pipe() { 40 if (sendFd != -1) { 41 ::close(sendFd); 42 } 43 44 if (receiveFd != -1) { 45 ::close(receiveFd); 46 } 47 } 48 49 status_t writeSignal() { 50 ssize_t nWritten = ::write(sendFd, "*", 1); 51 return nWritten == 1 ? 0 : -errno; 52 } 53 54 status_t readSignal() { 55 char buf[1]; 56 ssize_t nRead = ::read(receiveFd, buf, 1); 57 return nRead == 1 ? 0 : nRead == 0 ? -EPIPE : -errno; 58 } 59 }; 60 61 class DelayedTask : public Thread { 62 int mDelayMillis; 63 64 public: 65 DelayedTask(int delayMillis) : mDelayMillis(delayMillis) { } 66 67 protected: 68 virtual ~DelayedTask() { } 69 70 virtual void doTask() = 0; 71 72 virtual bool threadLoop() { 73 usleep(mDelayMillis * 1000); 74 doTask(); 75 return false; 76 } 77 }; 78 79 } // namespace android 80 81 #endif // TESTHELPERS_H 82
