1/* Threads compatibility routines for libgcc2 and libobjc. 2 Compile this one with gcc. 3 Copyright (C) 2004, 2005, 2008, 2009 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17Under Section 7 of GPL version 3, you are granted additional 18permissions described in the GCC Runtime Library Exception, version 193.1, as published by the Free Software Foundation. 20 21You should have received a copy of the GNU General Public License and 22a copy of the GCC Runtime Library Exception along with this program; 23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24<http://www.gnu.org/licenses/>. */ 25 26/* TPF needs its own version of gthr-*.h because TPF always links to 27 the thread library. However, for performance reasons we still do not 28 want to issue thread api calls unless a check is made to see that we 29 are running as a thread. */ 30 31#ifndef _GLIBCXX_GCC_GTHR_TPF_H 32#define _GLIBCXX_GCC_GTHR_TPF_H 33 34/* POSIX threads specific definitions. 35 Easy, since the interface is just one-to-one mapping. */ 36 37#define __GTHREADS 1 38 39/* Some implementations of <pthread.h> require this to be defined. */ 40#ifndef _REENTRANT 41#define _REENTRANT 1 42#endif 43 44#include <pthread.h> 45#include <unistd.h> 46 47typedef pthread_key_t __gthread_key_t; 48typedef pthread_once_t __gthread_once_t; 49typedef pthread_mutex_t __gthread_mutex_t; 50typedef pthread_mutex_t __gthread_recursive_mutex_t; 51 52#if defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) 53#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER 54#elif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) 55#define __GTHREAD_RECURSIVE_MUTEX_INIT PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP 56#endif 57 58#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER 59#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT 60#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function 61 62#define NOTATHREAD 00 63#define ECBBASEPTR (unsigned long int) *(unsigned int *)0x00000514u 64#define ECBPG2PTR ECBBASEPTR + 0x1000 65#define CE2THRCPTR *((unsigned char *)(ECBPG2PTR + 16)) 66#define __tpf_pthread_active() (CE2THRCPTR != NOTATHREAD) 67 68#if __GXX_WEAK__ && _GLIBCXX_GTHREAD_USE_WEAK 69# define __gthrw(name) \ 70 static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name))); 71# define __gthrw_(name) __gthrw_ ## name 72#else 73# define __gthrw(name) 74# define __gthrw_(name) name 75#endif 76 77__gthrw(pthread_once) 78__gthrw(pthread_key_create) 79__gthrw(pthread_key_delete) 80__gthrw(pthread_getspecific) 81__gthrw(pthread_setspecific) 82__gthrw(pthread_create) 83 84__gthrw(pthread_mutex_lock) 85__gthrw(pthread_mutex_trylock) 86__gthrw(pthread_mutex_unlock) 87__gthrw(pthread_mutexattr_init) 88__gthrw(pthread_mutexattr_settype) 89__gthrw(pthread_mutexattr_destroy) 90__gthrw(pthread_mutex_init) 91__gthrw(pthread_mutex_destroy) 92 93static inline int 94__gthread_active_p (void) 95{ 96 return 1; 97} 98 99static inline int 100__gthread_once (__gthread_once_t *__once, void (*__func) (void)) 101{ 102 if (__tpf_pthread_active ()) 103 return __gthrw_(pthread_once) (__once, __func); 104 else 105 return -1; 106} 107 108static inline int 109__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *)) 110{ 111 if (__tpf_pthread_active ()) 112 return __gthrw_(pthread_key_create) (__key, __dtor); 113 else 114 return -1; 115} 116 117static inline int 118__gthread_key_delete (__gthread_key_t __key) 119{ 120 if (__tpf_pthread_active ()) 121 return __gthrw_(pthread_key_delete) (__key); 122 else 123 return -1; 124} 125 126static inline void * 127__gthread_getspecific (__gthread_key_t __key) 128{ 129 if (__tpf_pthread_active ()) 130 return __gthrw_(pthread_getspecific) (__key); 131 else 132 return NULL; 133} 134 135static inline int 136__gthread_setspecific (__gthread_key_t __key, const void *__ptr) 137{ 138 if (__tpf_pthread_active ()) 139 return __gthrw_(pthread_setspecific) (__key, __ptr); 140 else 141 return -1; 142} 143 144static inline int 145__gthread_mutex_destroy (__gthread_mutex_t *__mutex) 146{ 147 if (__tpf_pthread_active ()) 148 return __gthrw_(pthread_mutex_destroy) (__mutex); 149 else 150 return 0; 151} 152 153static inline int 154__gthread_mutex_lock (__gthread_mutex_t *__mutex) 155{ 156 if (__tpf_pthread_active ()) 157 return __gthrw_(pthread_mutex_lock) (__mutex); 158 else 159 return 0; 160} 161 162static inline int 163__gthread_mutex_trylock (__gthread_mutex_t *__mutex) 164{ 165 if (__tpf_pthread_active ()) 166 return __gthrw_(pthread_mutex_trylock) (__mutex); 167 else 168 return 0; 169} 170 171static inline int 172__gthread_mutex_unlock (__gthread_mutex_t *__mutex) 173{ 174 if (__tpf_pthread_active ()) 175 return __gthrw_(pthread_mutex_unlock) (__mutex); 176 else 177 return 0; 178} 179 180static inline int 181__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex) 182{ 183 if (__tpf_pthread_active ()) 184 return __gthread_mutex_lock (__mutex); 185 else 186 return 0; 187} 188 189static inline int 190__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex) 191{ 192 if (__tpf_pthread_active ()) 193 return __gthread_mutex_trylock (__mutex); 194 else 195 return 0; 196} 197 198static inline int 199__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex) 200{ 201 if (__tpf_pthread_active ()) 202 return __gthread_mutex_unlock (__mutex); 203 else 204 return 0; 205} 206 207static inline int 208__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex) 209{ 210 if (__tpf_pthread_active ()) 211 { 212 pthread_mutexattr_t __attr; 213 int __r; 214 215 __r = __gthrw_(pthread_mutexattr_init) (&__attr); 216 if (!__r) 217 __r = __gthrw_(pthread_mutexattr_settype) (&__attr, 218 PTHREAD_MUTEX_RECURSIVE); 219 if (!__r) 220 __r = __gthrw_(pthread_mutex_init) (__mutex, &__attr); 221 if (!__r) 222 __r = __gthrw_(pthread_mutexattr_destroy) (&__attr); 223 return __r; 224 } 225 return 0; 226} 227 228 229#endif /* ! _GLIBCXX_GCC_GTHR_TPF_H */ 230