obs-studio/libobs/util/threading.h
jp9000 c9df41c1e2 (API Change) Remove pointers from all typedefs
Typedef pointers are unsafe.  If you do:
typedef struct bla *bla_t;
then you cannot use it as a constant, such as: const bla_t, because
that constant will be to the pointer itself rather than to the
underlying data.  I admit this was a fundamental mistake that must
be corrected.

All typedefs that were pointer types will now have their pointers
removed from the type itself, and the pointers will be used when they
are actually used as variables/parameters/returns instead.

This does not break ABI though, which is pretty nice.
2014-09-25 21:48:11 -07:00

80 lines
2.3 KiB
C

/*
* 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.
*/
#pragma once
/*
* 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"
#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;
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);
EXPORT long os_atomic_inc_long(volatile long *val);
EXPORT long os_atomic_dec_long(volatile long *val);
#ifdef __cplusplus
}
#endif