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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "osThread.h"
#include <stdint.h>
namespace osUtils {
Thread::Thread() :
m_thread((pthread_t)NULL),
m_exitStatus(0),
m_isRunning(false)
{
pthread_mutex_init(&m_lock, NULL);
}
Thread::~Thread()
{
pthread_mutex_destroy(&m_lock);
}
bool
Thread::start()
{
pthread_mutex_lock(&m_lock);
m_isRunning = true;
int ret = pthread_create(&m_thread, NULL, Thread::thread_main, this);
if(ret) {
m_isRunning = false;
}
pthread_mutex_unlock(&m_lock);
return m_isRunning;
}
bool
Thread::wait(int *exitStatus)
{
if (!m_isRunning) {
return false;
}
void *retval;
if (pthread_join(m_thread,&retval)) {
return false;
}
if (exitStatus) {
*exitStatus = (int)(uintptr_t)retval;
}
return true;
}
bool
Thread::trywait(int *exitStatus)
{
bool ret = false;
pthread_mutex_lock(&m_lock);
if (!m_isRunning) {
*exitStatus = m_exitStatus;
ret = true;
}
pthread_mutex_unlock(&m_lock);
return ret;
}
void *
Thread::thread_main(void *p_arg)
{
Thread *self = (Thread *)p_arg;
int ret = self->Main();
pthread_mutex_lock(&self->m_lock);
self->m_isRunning = false;
self->m_exitStatus = ret;
pthread_mutex_unlock(&self->m_lock);
return (void*)(uintptr_t)ret;
}
} // of namespace osUtils
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