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/*
* thread.c
*
* Copyright (c) 2012 Martin Szulecki All Rights Reserved.
* Copyright (c) 2012 Nikias Bassen All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "thread.h"
int thread_new(thread_t *thread, thread_func_t thread_func, void* data)
{
#ifdef WIN32
HANDLE th = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)thread_func, data, 0, NULL);
if (th == NULL) {
return -1;
}
*thread = th;
return 0;
#else
int res = pthread_create(thread, NULL, thread_func, data);
return res;
#endif
}
void thread_free(thread_t thread)
{
#ifdef WIN32
CloseHandle(thread);
#endif
}
void thread_join(thread_t thread)
{
/* wait for thread to complete */
#ifdef WIN32
WaitForSingleObject(thread, INFINITE);
#else
pthread_join(thread, NULL);
#endif
}
int thread_alive(thread_t thread)
{
if (!thread)
return 0;
#ifdef WIN32
return WaitForSingleObject(thread, 0) == WAIT_TIMEOUT;
#else
return pthread_kill(thread, 0) == 0;
#endif
}
void mutex_init(mutex_t* mutex)
{
#ifdef WIN32
InitializeCriticalSection(mutex);
#else
pthread_mutex_init(mutex, NULL);
#endif
}
void mutex_destroy(mutex_t* mutex)
{
#ifdef WIN32
DeleteCriticalSection(mutex);
#else
pthread_mutex_destroy(mutex);
#endif
}
void mutex_lock(mutex_t* mutex)
{
#ifdef WIN32
EnterCriticalSection(mutex);
#else
pthread_mutex_lock(mutex);
#endif
}
void mutex_unlock(mutex_t* mutex)
{
#ifdef WIN32
LeaveCriticalSection(mutex);
#else
pthread_mutex_unlock(mutex);
#endif
}
void thread_once(thread_once_t *once_control, void (*init_routine)(void))
{
#ifdef WIN32
while (InterlockedExchange(&(once_control->lock), 1) != 0) {
Sleep(1);
}
if (!once_control->state) {
once_control->state = 1;
init_routine();
}
InterlockedExchange(&(once_control->lock), 0);
#else
pthread_once(once_control, init_routine);
#endif
}
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