1/* Threads compatibily routines for libgcc2. */ 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_posix_h 30#define __gthr_posix_h 31 32/* POSIX threads specific definitions. 33 Easy, since the interface is just one-to-one mapping. */ 34 35#define __GTHREADS 1 36 37#include <pthread.h> 38 39typedef pthread_key_t __gthread_key_t; 40typedef pthread_once_t __gthread_once_t; 41typedef pthread_mutex_t __gthread_mutex_t; 42 43#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 44#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT 45 46#if SUPPORTS_WEAK && GTHREAD_USE_WEAK 47 48#pragma weak pthread_once 49#pragma weak pthread_key_create 50#pragma weak pthread_key_delete 51#pragma weak pthread_getspecific 52#pragma weak pthread_setspecific 53#pragma weak pthread_create 54 55#pragma weak pthread_mutex_lock 56#pragma weak pthread_mutex_trylock 57#pragma weak pthread_mutex_unlock 58 59static void *__gthread_active_ptr = &pthread_create; 60 61static inline int 62__gthread_active_p () 63{ 64 return __gthread_active_ptr != 0; 65} 66 67#else /* not SUPPORTS_WEAK */ 68 69static inline int 70__gthread_active_p () 71{ 72 return 1; 73} 74 75#endif /* SUPPORTS_WEAK */ 76 77static inline int 78__gthread_once (__gthread_once_t *once, void (*func) ()) 79{ 80 if (__gthread_active_p ()) 81 return pthread_once (once, func); 82 else 83 return -1; 84} 85 86static inline int 87__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *)) 88{ 89 return pthread_key_create (key, dtor); 90} 91 92static inline int 93__gthread_key_dtor (__gthread_key_t key, void *ptr) 94{ 95 /* Just reset the key value to zero. */ 96 if (ptr) 97 return pthread_setspecific (key, 0); 98 else 99 return 0; 100} 101 102static inline int 103__gthread_key_delete (__gthread_key_t key) 104{ 105 return pthread_key_delete (key); 106} 107 108static inline void * 109__gthread_getspecific (__gthread_key_t key) 110{ 111 return pthread_getspecific (key); 112} 113 114static inline int 115__gthread_setspecific (__gthread_key_t key, const void *ptr) 116{ 117 return pthread_setspecific (key, ptr); 118} 119 120static inline int 121__gthread_mutex_lock (__gthread_mutex_t *mutex) 122{ 123 if (__gthread_active_p ()) 124 return pthread_mutex_lock (mutex); 125 else 126 return 0; 127} 128 129static inline int 130__gthread_mutex_trylock (__gthread_mutex_t *mutex) 131{ 132 if (__gthread_active_p ()) 133 return pthread_mutex_trylock (mutex); 134 else 135 return 0; 136} 137 138static inline int 139__gthread_mutex_unlock (__gthread_mutex_t *mutex) 140{ 141 if (__gthread_active_p ()) 142 return pthread_mutex_unlock (mutex); 143 else 144 return 0; 145} 146 147#endif /* not __gthr_posix_h */ 148