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) 121extern "C" 122{ 123#endif /* __cplusplus */ 124 125#if !defined(HAVE_MODE_T) 126typedef unsigned int mode_t; 127#endif 128 129 130typedef struct sem_t_ * sem_t; 131 132PTW32_DLLPORT int __cdecl sem_init (sem_t * sem, 133 int pshared, 134 unsigned int value); 135 136PTW32_DLLPORT int __cdecl sem_destroy (sem_t * sem); 137 138PTW32_DLLPORT int __cdecl sem_trywait (sem_t * sem); 139 140PTW32_DLLPORT int __cdecl sem_wait (sem_t * sem); 141 142PTW32_DLLPORT int __cdecl sem_timedwait (sem_t * sem, 143 const struct timespec * abstime); 144 145PTW32_DLLPORT int __cdecl sem_post (sem_t * sem); 146 147PTW32_DLLPORT int __cdecl sem_post_multiple (sem_t * sem, 148 int count); 149 150PTW32_DLLPORT int __cdecl sem_open (const char * name, 151 int oflag, 152 mode_t mode, 153 unsigned int value); 154 155PTW32_DLLPORT int __cdecl sem_close (sem_t * sem); 156 157PTW32_DLLPORT int __cdecl sem_unlink (const char * name); 158 159PTW32_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