mingw/include/semaphore.h

   1 /*
   2  * Module: semaphore.h
   3  *
   4  * Purpose:
   5  *      Semaphores aren't actually part of the PThreads standard.
   6  *      They are defined by the POSIX Standard:
   7  *
   8  *              POSIX 1003.1b-1993      (POSIX.1b)
   9  *
  10  * --------------------------------------------------------------------------
  11  *
  12  *      Pthreads-win32 - POSIX Threads Library for Win32
  13  *      Copyright(C) 1998 John E. Bossom
  14  *      Copyright(C) 1999,2005 Pthreads-win32 contributors
  15  *
  16  *      Contact Email: rpj@callisto.canberra.edu.au
  17  *
  18  *      The current list of contributors is contained
  19  *      in the file CONTRIBUTORS included with the source
  20  *      code distribution. The list can also be seen at the
  21  *      following World Wide Web location:
  22  *      http://sources.redhat.com/pthreads-win32/contributors.html
  23  *
  24  *      This library is free software; you can redistribute it and/or
  25  *      modify it under the terms of the GNU Lesser General Public
  26  *      License as published by the Free Software Foundation; either
  27  *      version 2 of the License, or (at your option) any later version.
  28  *
  29  *      This library is distributed in the hope that it will be useful,
  30  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  31  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  32  *      Lesser General Public License for more details.
  33  *
  34  *      You should have received a copy of the GNU Lesser General Public
  35  *      License along with this library in the file COPYING.LIB;
  36  *      if not, write to the Free Software Foundation, Inc.,
  37  *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  38  */
  39 #if !defined( SEMAPHORE_H )
  40 #define SEMAPHORE_H
  41
  42 #undef PTW32_LEVEL
  43
  44 #if defined(_POSIX_SOURCE)
  45 #define PTW32_LEVEL 0
  46 /* Early POSIX */
  47 #endif
  48
  49 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309
  50 #undef PTW32_LEVEL
  51 #define PTW32_LEVEL 1
  52 /* Include 1b, 1c and 1d */
  53 #endif
  54
  55 #if defined(INCLUDE_NP)
  56 #undef PTW32_LEVEL
  57 #define PTW32_LEVEL 2
  58 /* Include Non-Portable extensions */
  59 #endif
  60
  61 #define PTW32_LEVEL_MAX 3
  62
  63 #if !defined(PTW32_LEVEL)
  64 #define PTW32_LEVEL PTW32_LEVEL_MAX
  65 /* Include everything */
  66 #endif
  67
  68 #if __GNUC__ && ! defined (__declspec)
  69 # error Please upgrade your GNU compiler to one that supports __declspec.
  70 #endif
  71
  72 /*
  73  * When building the DLL code, you should define PTW32_BUILD so that
  74  * the variables/functions are exported correctly. When using the DLL,
  75  * do NOT define PTW32_BUILD, and then the variables/functions will
  76  * be imported correctly.
  77  */
  78 #ifndef PTW32_STATIC_LIB
  79 #  ifdef PTW32_BUILD
  80 #    define PTW32_DLLPORT __declspec (dllexport)
  81 #  else
  82 #    define PTW32_DLLPORT __declspec (dllimport)
  83 #  endif
  84 #else
  85 #  define PTW32_DLLPORT
  86 #endif
  87
  88 /*
  89  * This is a duplicate of what is in the autoconf config.h,
  90  * which is only used when building the pthread-win32 libraries.
  91  */
  92
  93 #ifndef PTW32_CONFIG_H
  94 #  if defined(WINCE)
  95 #    define NEED_ERRNO
  96 #    define NEED_SEM
  97 #  endif
  98 #  if defined(_UWIN) || defined(__MINGW32__)
  99 #    define HAVE_MODE_T
 100 #  endif
 101 #endif
 102
 103 /*
 104  *
 105  */
 106
 107 #if PTW32_LEVEL >= PTW32_LEVEL_MAX
 108 #ifdef NEED_ERRNO
 109 #include "need_errno.h"
 110 #else
 111 #include <errno.h>
 112 #endif
 113 #endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
 114
 115 #define _POSIX_SEMAPHORES
 116
 117 #ifdef __cplusplus
 118 extern "C"
 119 {
 120 #endif                          /* __cplusplus */
 121
 122 #ifndef HAVE_MODE_T
 123 typedef unsigned int mode_t;
 124 #endif
 125
 126
 127 typedef struct sem_t_ * sem_t;
 128
 129 PTW32_DLLPORT int __cdecl sem_init (sem_t * sem,
 130                             int pshared,
 131                             unsigned int value);
 132
 133 PTW32_DLLPORT int __cdecl sem_destroy (sem_t * sem);
 134
 135 PTW32_DLLPORT int __cdecl sem_trywait (sem_t * sem);
 136
 137 PTW32_DLLPORT int __cdecl sem_wait (sem_t * sem);
 138
 139 PTW32_DLLPORT int __cdecl sem_timedwait (sem_t * sem,
 140                                  const struct timespec * abstime);
 141
 142 PTW32_DLLPORT int __cdecl sem_post (sem_t * sem);
 143
 144 PTW32_DLLPORT int __cdecl sem_post_multiple (sem_t * sem,
 145                                      int count);
 146
 147 PTW32_DLLPORT int __cdecl sem_open (const char * name,
 148                             int oflag,
 149                             mode_t mode,
 150                             unsigned int value);
 151
 152 PTW32_DLLPORT int __cdecl sem_close (sem_t * sem);
 153
 154 PTW32_DLLPORT int __cdecl sem_unlink (const char * name);
 155
 156 PTW32_DLLPORT int __cdecl sem_getvalue (sem_t * sem,
 157                                 int * sval);
 158
 159 #ifdef __cplusplus
 160 }                               /* End of extern "C" */
 161 #endif                          /* __cplusplus */
 162
 163 #undef PTW32_LEVEL
 164 #undef PTW32_LEVEL_MAX
 165
 166 #endif                          /* !SEMAPHORE_H */