167 lines
4.3 KiB
C
167 lines
4.3 KiB
C
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/*
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* Module: semaphore.h
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*
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* Purpose:
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* Semaphores aren't actually part of the PThreads standard.
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* They are defined by the POSIX Standard:
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*
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* POSIX 1003.1b-1993 (POSIX.1b)
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*
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* --------------------------------------------------------------------------
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*
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* Pthreads-win32 - POSIX Threads Library for Win32
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* Copyright(C) 1998 John E. Bossom
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* Copyright(C) 1999,2005 Pthreads-win32 contributors
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*
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* Contact Email: rpj@callisto.canberra.edu.au
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*
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* The current list of contributors is contained
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* in the file CONTRIBUTORS included with the source
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* code distribution. The list can also be seen at the
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* following World Wide Web location:
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* http://sources.redhat.com/pthreads-win32/contributors.html
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library in the file COPYING.LIB;
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* if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#if !defined( SEMAPHORE_H )
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#define SEMAPHORE_H
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#undef PTW32_LEVEL
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#if defined(_POSIX_SOURCE)
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#define PTW32_LEVEL 0
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/* Early POSIX */
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#endif
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#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309
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#undef PTW32_LEVEL
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#define PTW32_LEVEL 1
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/* Include 1b, 1c and 1d */
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#endif
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#if defined(INCLUDE_NP)
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#undef PTW32_LEVEL
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#define PTW32_LEVEL 2
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/* Include Non-Portable extensions */
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#endif
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#define PTW32_LEVEL_MAX 3
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#if !defined(PTW32_LEVEL)
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#define PTW32_LEVEL PTW32_LEVEL_MAX
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/* Include everything */
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#endif
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#if __GNUC__ && ! defined (__declspec)
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# error Please upgrade your GNU compiler to one that supports __declspec.
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#endif
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/*
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* When building the DLL code, you should define PTW32_BUILD so that
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* the variables/functions are exported correctly. When using the DLL,
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* do NOT define PTW32_BUILD, and then the variables/functions will
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* be imported correctly.
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*/
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#ifndef PTW32_STATIC_LIB
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# ifdef PTW32_BUILD
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# define PTW32_DLLPORT __declspec (dllexport)
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# else
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# define PTW32_DLLPORT __declspec (dllimport)
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# endif
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#else
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# define PTW32_DLLPORT
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#endif
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/*
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* This is a duplicate of what is in the autoconf config.h,
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* which is only used when building the pthread-win32 libraries.
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*/
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#ifndef PTW32_CONFIG_H
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# if defined(WINCE)
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# define NEED_ERRNO
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# define NEED_SEM
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# endif
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# if defined(_UWIN) || defined(__MINGW32__)
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# define HAVE_MODE_T
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# endif
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#endif
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/*
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*
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*/
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#if PTW32_LEVEL >= PTW32_LEVEL_MAX
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#ifdef NEED_ERRNO
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#include "need_errno.h"
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#else
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#include <errno.h>
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#endif
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#endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
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#define _POSIX_SEMAPHORES
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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#ifndef HAVE_MODE_T
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typedef unsigned int mode_t;
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#endif
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typedef struct sem_t_ * sem_t;
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PTW32_DLLPORT int __cdecl sem_init (sem_t * sem,
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int pshared,
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unsigned int value);
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PTW32_DLLPORT int __cdecl sem_destroy (sem_t * sem);
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PTW32_DLLPORT int __cdecl sem_trywait (sem_t * sem);
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PTW32_DLLPORT int __cdecl sem_wait (sem_t * sem);
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PTW32_DLLPORT int __cdecl sem_timedwait (sem_t * sem,
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const struct timespec * abstime);
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PTW32_DLLPORT int __cdecl sem_post (sem_t * sem);
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PTW32_DLLPORT int __cdecl sem_post_multiple (sem_t * sem,
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int count);
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PTW32_DLLPORT int __cdecl sem_open (const char * name,
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int oflag,
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mode_t mode,
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unsigned int value);
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PTW32_DLLPORT int __cdecl sem_close (sem_t * sem);
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PTW32_DLLPORT int __cdecl sem_unlink (const char * name);
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PTW32_DLLPORT int __cdecl sem_getvalue (sem_t * sem,
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int * sval);
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#ifdef __cplusplus
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} /* End of extern "C" */
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#endif /* __cplusplus */
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#undef PTW32_LEVEL
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#undef PTW32_LEVEL_MAX
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#endif /* !SEMAPHORE_H */
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