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 */ 170