obs-studio/libobs/util/threading.h

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/*
* Copyright (c) 2013-2014 Hugh Bailey <obs.jim@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
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#pragma once
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/*
* Allows posix thread usage on windows as well as other operating systems.
* Use this header if you want to make your code more platform independent.
*
* Also provides a custom platform-independent "event" handler via
* pthread conditional waits.
*/
#include "c99defs.h"
#ifdef _MSC_VER
#include "../../deps/w32-pthreads/pthread.h"
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#else
#include <errno.h>
#include <pthread.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* this may seem strange, but you can't use it unless it's an initializer */
static inline void pthread_mutex_init_value(pthread_mutex_t *mutex)
{
pthread_mutex_t init_val = PTHREAD_MUTEX_INITIALIZER;
if (!mutex)
return;
*mutex = init_val;
}
enum os_event_type {
OS_EVENT_TYPE_AUTO,
OS_EVENT_TYPE_MANUAL
};
struct os_event_data;
struct os_sem_data;
typedef struct os_event_data *os_event_t;
typedef struct os_sem_data *os_sem_t;
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EXPORT int os_event_init(os_event_t *event, enum os_event_type type);
EXPORT void os_event_destroy(os_event_t event);
EXPORT int os_event_wait(os_event_t event);
EXPORT int os_event_timedwait(os_event_t event, unsigned long milliseconds);
EXPORT int os_event_try(os_event_t event);
EXPORT int os_event_signal(os_event_t event);
EXPORT void os_event_reset(os_event_t event);
EXPORT int os_sem_init(os_sem_t *sem, int value);
EXPORT void os_sem_destroy(os_sem_t sem);
EXPORT int os_sem_post(os_sem_t sem);
EXPORT int os_sem_wait(os_sem_t sem);
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EXPORT long os_atomic_inc_long(volatile long *val);
EXPORT long os_atomic_dec_long(volatile long *val);
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#ifdef __cplusplus
}
#endif