1 /* 2 * Copyright (C) 2011 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 #include "osThread.h" 17 18 #include "emugl/common/thread_store.h" 19 20 #include <stdint.h> 21 22 namespace osUtils { 23 24 Thread::Thread() : 25 m_thread((pthread_t)NULL), 26 m_exitStatus(0), 27 m_isRunning(false) 28 { 29 pthread_mutex_init(&m_lock, NULL); 30 } 31 32 Thread::~Thread() 33 { 34 pthread_mutex_destroy(&m_lock); 35 } 36 37 bool 38 Thread::start() 39 { 40 pthread_mutex_lock(&m_lock); 41 m_isRunning = true; 42 int ret = pthread_create(&m_thread, NULL, Thread::thread_main, this); 43 if(ret) { 44 m_isRunning = false; 45 } 46 pthread_mutex_unlock(&m_lock); 47 return m_isRunning; 48 } 49 50 bool 51 Thread::wait(int *exitStatus) 52 { 53 if (!m_isRunning) { 54 return false; 55 } 56 57 void *retval; 58 if (pthread_join(m_thread,&retval)) { 59 return false; 60 } 61 62 if (exitStatus) { 63 *exitStatus = (int)(uintptr_t)retval; 64 } 65 return true; 66 } 67 68 bool 69 Thread::trywait(int *exitStatus) 70 { 71 bool ret = false; 72 73 pthread_mutex_lock(&m_lock); 74 if (!m_isRunning) { 75 *exitStatus = m_exitStatus; 76 ret = true; 77 } 78 pthread_mutex_unlock(&m_lock); 79 return ret; 80 } 81 82 void * 83 Thread::thread_main(void *p_arg) 84 { 85 Thread *self = (Thread *)p_arg; 86 int ret = self->Main(); 87 88 pthread_mutex_lock(&self->m_lock); 89 self->m_isRunning = false; 90 self->m_exitStatus = ret; 91 pthread_mutex_unlock(&self->m_lock); 92 93 ::emugl::ThreadStore::OnThreadExit(); 94 return (void*)(uintptr_t)ret; 95 } 96 97 } // of namespace osUtils 98 99