native_client_sdk/src/libraries/third_party/pthreads-win32/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_SEMAPHORE_LEVEL
  43
  44 #if defined(_POSIX_SOURCE)
  45 #define PTW32_SEMAPHORE_LEVEL 0
  46 /* Early POSIX */
  47 #endif
  48
  49 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309
  50 #undef PTW32_SEMAPHORE_LEVEL
  51 #define PTW32_SEMAPHORE_LEVEL 1
  52 /* Include 1b, 1c and 1d */
  53 #endif
  54
  55 #if defined(INCLUDE_NP)
  56 #undef PTW32_SEMAPHORE_LEVEL
  57 #define PTW32_SEMAPHORE_LEVEL 2
  58 /* Include Non-Portable extensions */
  59 #endif
  60
  61 #define PTW32_SEMAPHORE_LEVEL_MAX 3
  62
  63 #if !defined(PTW32_SEMAPHORE_LEVEL)
  64 #define PTW32_SEMAPHORE_LEVEL PTW32_SEMAPHORE_LEVEL_MAX
  65 /* Include everything */
  66 #endif
  67
  68 #if defined(__GNUC__) && ! defined (__declspec)
  69 # error Please upgrade your GNU compiler to one that supports __declspec.
  70 #endif
  71
  72 /*
  73  * When building the library, you should define PTW32_BUILD so that
  74  * the variables/functions are exported correctly. When using the library,
  75  * do NOT define PTW32_BUILD, and then the variables/functions will
  76  * be imported correctly.
  77  */
  78 #if !defined(PTW32_STATIC_LIB)
  79 #  if defined(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 #if !defined(PTW32_CONFIG_H)
  94 #  if defined(WINCE)
  95 #    define NEED_ERRNO
  96 #    define NEED_SEM
  97 #  endif
  98 #  if defined(__MINGW64__)
  99 #    define HAVE_STRUCT_TIMESPEC
 100 #    define HAVE_MODE_T
 101 #  elif defined(_UWIN) || defined(__MINGW32__)
 102 #    define HAVE_MODE_T
 103 #  endif
 104 #endif
 105
 106 /*
 107  *
 108  */
 109
 110 #if PTW32_SEMAPHORE_LEVEL >= PTW32_SEMAPHORE_LEVEL_MAX
 111 #if defined(NEED_ERRNO)
 112 #include "need_errno.h"
 113 #else
 114 #include <errno.h>
 115 #endif
 116 #endif /* PTW32_SEMAPHORE_LEVEL >= PTW32_SEMAPHORE_LEVEL_MAX */
 117
 118 #define _POSIX_SEMAPHORES
 119
 120 #if defined(__cplusplus)
 121 extern "C"
 122 {
 123 #endif                          /* __cplusplus */
 124
 125 #if !defined(HAVE_MODE_T)
 126 typedef unsigned int mode_t;
 127 #endif
 128
 129
 130 typedef struct sem_t_ * sem_t;
 131
 132 PTW32_DLLPORT int __cdecl sem_init (sem_t * sem,
 133                             int pshared,
 134                             unsigned int value);
 135
 136 PTW32_DLLPORT int __cdecl sem_destroy (sem_t * sem);
 137
 138 PTW32_DLLPORT int __cdecl sem_trywait (sem_t * sem);
 139
 140 PTW32_DLLPORT int __cdecl sem_wait (sem_t * sem);
 141
 142 PTW32_DLLPORT int __cdecl sem_timedwait (sem_t * sem,
 143                                  const struct timespec * abstime);
 144
 145 PTW32_DLLPORT int __cdecl sem_post (sem_t * sem);
 146
 147 PTW32_DLLPORT int __cdecl sem_post_multiple (sem_t * sem,
 148                                      int count);
 149
 150 PTW32_DLLPORT int __cdecl sem_open (const char * name,
 151                             int oflag,
 152                             mode_t mode,
 153                             unsigned int value);
 154
 155 PTW32_DLLPORT int __cdecl sem_close (sem_t * sem);
 156
 157 PTW32_DLLPORT int __cdecl sem_unlink (const char * name);
 158
 159 PTW32_DLLPORT int __cdecl sem_getvalue (sem_t * sem,
 160                                 int * sval);
 161
 162 #if defined(__cplusplus)
 163 }                               /* End of extern "C" */
 164 #endif                          /* __cplusplus */
 165
 166 #undef PTW32_SEMAPHORE_LEVEL
 167 #undef PTW32_SEMAPHORE_LEVEL_MAX
 168
 169 #endif                          /* !SEMAPHORE_H */