/*
* 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: [email protected]
*
* 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 __declspec (dllimport)
# 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 */
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