forked from Archive/PX4-Autopilot
109 lines
3.4 KiB
C
109 lines
3.4 KiB
C
/****************************************************************************
|
|
*
|
|
* Copyright (c) 2016 PX4 Development Team. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name PX4 nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/**
|
|
* @file sem.h
|
|
*
|
|
* Synchronization primitive: Semaphore
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <semaphore.h>
|
|
|
|
#if !defined(__PX4_NUTTX)
|
|
/* Values for protocol attribute */
|
|
|
|
#define SEM_PRIO_NONE 0
|
|
#define SEM_PRIO_INHERIT 1
|
|
#define SEM_PRIO_PROTECT 2
|
|
#define sem_setprotocol(s,p)
|
|
#endif
|
|
|
|
#if (defined(__PX4_DARWIN) || defined(__PX4_CYGWIN) || defined(__PX4_POSIX)) && !defined(__PX4_QURT)
|
|
|
|
__BEGIN_DECLS
|
|
|
|
typedef struct {
|
|
pthread_mutex_t lock;
|
|
pthread_cond_t wait;
|
|
int value;
|
|
} px4_sem_t;
|
|
|
|
__EXPORT int px4_sem_init(px4_sem_t *s, int pshared, unsigned value);
|
|
__EXPORT int px4_sem_setprotocol(px4_sem_t *s, int protocol);
|
|
__EXPORT int px4_sem_wait(px4_sem_t *s);
|
|
__EXPORT int px4_sem_trywait(px4_sem_t *sem);
|
|
__EXPORT int px4_sem_timedwait(px4_sem_t *sem, const struct timespec *abstime);
|
|
__EXPORT int px4_sem_post(px4_sem_t *s);
|
|
__EXPORT int px4_sem_getvalue(px4_sem_t *s, int *sval);
|
|
__EXPORT int px4_sem_destroy(px4_sem_t *s);
|
|
|
|
__END_DECLS
|
|
|
|
//#elif defined(__PX4_QURT)
|
|
|
|
//typedef sem_t px4_sem_t;
|
|
|
|
//#define px4_sem_init sem_init
|
|
//#define px4_sem_setprotocol sem_setprotocol
|
|
//#define px4_sem_wait sem_wait
|
|
//#define px4_sem_trywait sem_trywait
|
|
//#define px4_sem_post sem_post
|
|
//#define px4_sem_getvalue sem_getvalue
|
|
//#define px4_sem_destroy sem_destroy
|
|
|
|
#else
|
|
|
|
typedef sem_t px4_sem_t;
|
|
|
|
__BEGIN_DECLS
|
|
|
|
#define px4_sem_init sem_init
|
|
#define px4_sem_setprotocol sem_setprotocol
|
|
#define px4_sem_wait sem_wait
|
|
#define px4_sem_trywait sem_trywait
|
|
#define px4_sem_post sem_post
|
|
#define px4_sem_getvalue sem_getvalue
|
|
#define px4_sem_destroy sem_destroy
|
|
|
|
#if defined(__PX4_QURT)
|
|
__EXPORT int px4_sem_timedwait(px4_sem_t *sem, const struct timespec *abstime);
|
|
#else
|
|
#define px4_sem_timedwait sem_timedwait
|
|
#endif
|
|
|
|
__END_DECLS
|
|
|
|
#endif
|