170 lines
4.4 KiB
C
170 lines
4.4 KiB
C
|
/*
|
||
|
|
* Module: semaphore.h
|
||
|
|
*
|
||
|
|
* Purpose:
|
||
|
|
* Semaphores aren't actually part of the PThreads standard.
|
||
|
|
* They are defined by the POSIX Standard:
|
||
|
|
*
|
||
|
|
* POSIX 1003.1b-1993 (POSIX.1b)
|
||
|
|
*
|
||
|
|
* --------------------------------------------------------------------------
|
||
|
|
*
|
||
|
|
* Pthreads-win32 - POSIX Threads Library for Win32
|
||
|
|
* Copyright(C) 1998 John E. Bossom
|
||
|
|
* Copyright(C) 1999,2005 Pthreads-win32 contributors
|
||
|
|
*
|
||
|
|
* Contact Email: rpj@callisto.canberra.edu.au
|
||
|
|
*
|
||
|
|
* The current list of contributors is contained
|
||
|
|
* in the file CONTRIBUTORS included with the source
|
||
|
|
* code distribution. The list can also be seen at the
|
||
|
|
* following World Wide Web location:
|
||
|
|
* http://sources.redhat.com/pthreads-win32/contributors.html
|
||
|
|
*
|
||
|
|
* 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 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 in the file COPYING.LIB;
|
||
|
|
* if not, write to the Free Software Foundation, Inc.,
|
||
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
||
|
|
*/
|
||
|
|
#if !defined( SEMAPHORE_H )
|
||
|
|
#define SEMAPHORE_H
|
||
|
|
|
||
|
|
#undef PTW32_SEMAPHORE_LEVEL
|
||
|
|
|
||
|
|
#if defined(_POSIX_SOURCE)
|
||
|
|
#define PTW32_SEMAPHORE_LEVEL 0
|
||
|
|
/* Early POSIX */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309
|
||
|
|
#undef PTW32_SEMAPHORE_LEVEL
|
||
|
|
#define PTW32_SEMAPHORE_LEVEL 1
|
||
|
|
/* Include 1b, 1c and 1d */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(INCLUDE_NP)
|
||
|
|
#undef PTW32_SEMAPHORE_LEVEL
|
||
|
|
#define PTW32_SEMAPHORE_LEVEL 2
|
||
|
|
/* Include Non-Portable extensions */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define PTW32_SEMAPHORE_LEVEL_MAX 3
|
||
|
|
|
||
|
|
#if !defined(PTW32_SEMAPHORE_LEVEL)
|
||
|
|
#define PTW32_SEMAPHORE_LEVEL PTW32_SEMAPHORE_LEVEL_MAX
|
||
|
|
/* Include everything */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(__GNUC__) && ! defined (__declspec)
|
||
|
|
# error Please upgrade your GNU compiler to one that supports __declspec.
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* When building the library, you should define PTW32_BUILD so that
|
||
|
|
* the variables/functions are exported correctly. When using the library,
|
||
|
|
* do NOT define PTW32_BUILD, and then the variables/functions will
|
||
|
|
* be imported correctly.
|
||
|
|
*/
|
||
|
|
#if !defined(PTW32_STATIC_LIB)
|
||
|
|
# if defined(PTW32_BUILD)
|
||
|
|
# define PTW32_DLLPORT __declspec (dllexport)
|
||
|
|
# else
|
||
|
|
# define PTW32_DLLPORT
|
||
|
|
# endif
|
||
|
|
#else
|
||
|
|
# define PTW32_DLLPORT
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is a duplicate of what is in the autoconf config.h,
|
||
|
|
* which is only used when building the pthread-win32 libraries.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if !defined(PTW32_CONFIG_H)
|
||
|
|
# if defined(WINCE)
|
||
|
|
# define NEED_ERRNO
|
||
|
|
# define NEED_SEM
|
||
|
|
# endif
|
||
|
|
# if defined(__MINGW64__)
|
||
|
|
# define HAVE_STRUCT_TIMESPEC
|
||
|
|
# define HAVE_MODE_T
|
||
|
|
# elif defined(_UWIN) || defined(__MINGW32__)
|
||
|
|
# define HAVE_MODE_T
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if PTW32_SEMAPHORE_LEVEL >= PTW32_SEMAPHORE_LEVEL_MAX
|
||
|
|
#if defined(NEED_ERRNO)
|
||
|
|
#include "need_errno.h"
|
||
|
|
#else
|
||
|
|
#include <errno.h>
|
||
|
|
#endif
|
||
|
|
#endif /* PTW32_SEMAPHORE_LEVEL >= PTW32_SEMAPHORE_LEVEL_MAX */
|
||
|
|
|
||
|
|
#define _POSIX_SEMAPHORES
|
||
|
|
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
extern "C"
|
||
|
|
{
|
||
|
|
#endif /* __cplusplus */
|
||
|
|
|
||
|
|
#if !defined(HAVE_MODE_T)
|
||
|
|
typedef unsigned int mode_t;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
typedef struct sem_t_ * sem_t;
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_init (sem_t * sem,
|
||
|
|
int pshared,
|
||
|
|
unsigned int value);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_destroy (sem_t * sem);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_trywait (sem_t * sem);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_wait (sem_t * sem);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_timedwait (sem_t * sem,
|
||
|
|
const struct timespec * abstime);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_post (sem_t * sem);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_post_multiple (sem_t * sem,
|
||
|
|
int count);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_open (const char * name,
|
||
|
|
int oflag,
|
||
|
|
mode_t mode,
|
||
|
|
unsigned int value);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_close (sem_t * sem);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_unlink (const char * name);
|
||
|
|
|
||
|
|
PTW32_DLLPORT int __cdecl sem_getvalue (sem_t * sem,
|
||
|
|
int * sval);
|
||
|
|
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
} /* End of extern "C" */
|
||
|
|
#endif /* __cplusplus */
|
||
|
|
|
||
|
|
#undef PTW32_SEMAPHORE_LEVEL
|
||
|
|
#undef PTW32_SEMAPHORE_LEVEL_MAX
|
||
|
|
|
||
|
|
#endif /* !SEMAPHORE_H */
|