1 2/* Compile this one with gcc. */ 3/* Copyright (C) 1997 Free Software Foundation, Inc. 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU CC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. */ 21 22/* As a special exception, if you link this library with other files, 23 some of which are compiled with GCC, to produce an executable, 24 this library does not by itself cause the resulting executable 25 to be covered by the GNU General Public License. 26 This exception does not however invalidate any other reasons why 27 the executable file might be covered by the GNU General Public License. */ 28 29#ifndef __gthr_dce_h 30#define __gthr_dce_h 31 32/* DCE threads interface. 33 DCE threads are based on POSIX threads draft 4, and many things 34 have changed since then. */ 35 36#define __GTHREADS 1 37 38#include <pthread.h> 39 40typedef pthread_key_t __gthread_key_t; 41typedef pthread_once_t __gthread_once_t; 42typedef pthread_mutex_t __gthread_mutex_t; 43 44#define __GTHREAD_ONCE_INIT pthread_once_init 45/* Howto define __GTHREAD_MUTEX_INIT? */ 46 47#if SUPPORTS_WEAK && GTHREAD_USE_WEAK 48 49#pragma weak pthread_once 50#pragma weak pthread_once_init 51#pragma weak pthread_key_create 52#pragma weak pthread_key_delete 53#pragma weak pthread_getspecific 54#pragma weak pthread_setspecific 55#pragma weak pthread_create 56 57#pragma weak pthread_mutex_lock 58#pragma weak pthread_mutex_trylock 59#pragma weak pthread_mutex_unlock 60 61static void *__gthread_active_ptr = &pthread_create; 62 63static inline int 64__gthread_active_p () 65{ 66 return __gthread_active_ptr != 0; 67} 68 69#else /* not SUPPORTS_WEAK */ 70 71static inline int 72__gthread_active_p () 73{ 74 return 1; 75} 76 77#endif /* SUPPORTS_WEAK */ 78 79static inline int 80__gthread_once (__gthread_once_t *once, void (*func) ()) 81{ 82 if (__gthread_active_p ()) 83 return pthread_once (once, func); 84 else 85 return -1; 86} 87 88static inline int 89__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *)) 90{ 91 return pthread_keycreate (key, dtor); 92} 93 94static inline int 95__gthread_key_dtor (__gthread_key_t key, void *ptr) 96{ 97 /* Nothing needed. */ 98 return 0; 99} 100 101static inline int 102__gthread_key_delete (__gthread_key_t key) 103{ 104 return pthread_key_delete (key); 105} 106 107static inline void * 108__gthread_getspecific (__gthread_key_t key) 109{ 110 void *ptr; 111 if (pthread_getspecific (key, &ptr) == 0) 112 return ptr; 113 else 114 return 0; 115} 116 117static inline int 118__gthread_setspecific (__gthread_key_t key, const void *ptr) 119{ 120 return pthread_setspecific (key, (void *) ptr); 121} 122 123static inline int 124__gthread_mutex_lock (__gthread_mutex_t *mutex) 125{ 126 if (__gthread_active_p ()) 127 return pthread_mutex_lock (mutex); 128 else 129 return 0; 130} 131 132static inline int 133__gthread_mutex_trylock (__gthread_mutex_t *mutex) 134{ 135 if (__gthread_active_p ()) 136 return pthread_mutex_trylock (mutex); 137 else 138 return 0; 139} 140 141static inline int 142__gthread_mutex_unlock (__gthread_mutex_t *mutex) 143{ 144 if (__gthread_active_p ()) 145 return pthread_mutex_unlock (mutex); 146 else 147 return 0; 148} 149 150#endif /* not __gthr_dce_h */ 151