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 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see 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 47 typedef pthread_key_t __gthread_key_t; 48 typedef pthread_once_t __gthread_once_t; 49 typedef pthread_mutex_t __gthread_mutex_t; 50 typedef 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 93 static inline int 94 __gthread_active_p (void) 95 { 96 return 1; 97 } 98 99 static 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 } 107 108 static 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 } 116 117 static 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 } 125 126 static 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 } 134 135 static 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 } 143 144 static 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 } 152 153 static 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 } 161 162 static 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 } 170 171 static 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 } 179 180 static 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 } 188 189 static 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 } 197 198 static 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 } 206 207 static 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
