| 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 */ |