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