95b0680cde
http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/semaphore.h.html (Even if it didn't, this header previously referred to NULL without ensuring that NULL was actually visible.) Change-Id: I70577f4afc21f32c9e585076986127899ef8c8c1
62 lines
2 KiB
C
62 lines
2 KiB
C
/*
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _SEMAPHORE_H
|
|
#define _SEMAPHORE_H
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
struct timespec;
|
|
|
|
typedef struct {
|
|
unsigned int count;
|
|
#ifdef __LP64__
|
|
int __reserved[3];
|
|
#endif
|
|
} sem_t;
|
|
|
|
#define SEM_FAILED __BIONIC_CAST(reinterpret_cast, sem_t*, 0)
|
|
|
|
int sem_destroy(sem_t*);
|
|
int sem_getvalue(sem_t*, int*);
|
|
int sem_init(sem_t*, int, unsigned int);
|
|
int sem_post(sem_t*);
|
|
int sem_timedwait(sem_t*, const struct timespec*);
|
|
int sem_trywait(sem_t*);
|
|
int sem_wait(sem_t*);
|
|
|
|
/* These aren't actually implemented. */
|
|
sem_t* sem_open(const char*, int, ...);
|
|
int sem_close(sem_t*);
|
|
int sem_unlink(const char*);
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* _SEMAPHORE_H */
|