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Diffstat (limited to 'libgcc/gthr.h')
| -rw-r--r-- | libgcc/gthr.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/libgcc/gthr.h b/libgcc/gthr.h new file mode 100644 index 00000000000..607c26eb563 --- /dev/null +++ b/libgcc/gthr.h @@ -0,0 +1,148 @@ +/* Threads compatibility routines for libgcc2. */ +/* Compile this one with gcc. */ +/* Copyright (C) 1997, 1998, 2004, 2008, 2009, 2011 + Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_GTHR_H +#define GCC_GTHR_H + +#ifndef HIDE_EXPORTS +#pragma GCC visibility push(default) +#endif + +/* If this file is compiled with threads support, it must + #define __GTHREADS 1 + to indicate that threads support is present. Also it has define + function + int __gthread_active_p () + that returns 1 if thread system is active, 0 if not. + + The threads interface must define the following types: + __gthread_key_t + __gthread_once_t + __gthread_mutex_t + __gthread_recursive_mutex_t + + The threads interface must define the following macros: + + __GTHREAD_ONCE_INIT + to initialize __gthread_once_t + __GTHREAD_MUTEX_INIT + to initialize __gthread_mutex_t to get a fast + non-recursive mutex. + __GTHREAD_MUTEX_INIT_FUNCTION + some systems can't initialize a mutex without a + function call. On such systems, define this to a + function which looks like this: + void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *) + Don't define __GTHREAD_MUTEX_INIT in this case + __GTHREAD_RECURSIVE_MUTEX_INIT + __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION + as above, but for a recursive mutex. + + The threads interface must define the following static functions: + + int __gthread_once (__gthread_once_t *once, void (*func) ()) + + int __gthread_key_create (__gthread_key_t *keyp, void (*dtor) (void *)) + int __gthread_key_delete (__gthread_key_t key) + + void *__gthread_getspecific (__gthread_key_t key) + int __gthread_setspecific (__gthread_key_t key, const void *ptr) + + int __gthread_mutex_destroy (__gthread_mutex_t *mutex); + + int __gthread_mutex_lock (__gthread_mutex_t *mutex); + int __gthread_mutex_trylock (__gthread_mutex_t *mutex); + int __gthread_mutex_unlock (__gthread_mutex_t *mutex); + + int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex); + int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex); + int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex); + + The following are supported in POSIX threads only. They are required to + fix a deadlock in static initialization inside libsupc++. The header file + gthr-posix.h defines a symbol __GTHREAD_HAS_COND to signify that these extra + features are supported. + + Types: + __gthread_cond_t + + Macros: + __GTHREAD_COND_INIT + __GTHREAD_COND_INIT_FUNCTION + + Interface: + int __gthread_cond_broadcast (__gthread_cond_t *cond); + int __gthread_cond_wait (__gthread_cond_t *cond, __gthread_mutex_t *mutex); + int __gthread_cond_wait_recursive (__gthread_cond_t *cond, + __gthread_recursive_mutex_t *mutex); + + All functions returning int should return zero on success or the error + number. If the operation is not supported, -1 is returned. + + If the following are also defined, you should + #define __GTHREADS_CXX0X 1 + to enable the c++0x thread library. + + Types: + __gthread_t + __gthread_time_t + + Interface: + int __gthread_create (__gthread_t *thread, void *(*func) (void*), + void *args); + int __gthread_join (__gthread_t thread, void **value_ptr); + int __gthread_detach (__gthread_t thread); + int __gthread_equal (__gthread_t t1, __gthread_t t2); + __gthread_t __gthread_self (void); + int __gthread_yield (void); + + int __gthread_mutex_timedlock (__gthread_mutex_t *m, + const __gthread_time_t *abs_timeout); + int __gthread_recursive_mutex_timedlock (__gthread_recursive_mutex_t *m, + const __gthread_time_t *abs_time); + + int __gthread_cond_signal (__gthread_cond_t *cond); + int __gthread_cond_timedwait (__gthread_cond_t *cond, + __gthread_mutex_t *mutex, + const __gthread_time_t *abs_timeout); + int __gthread_cond_timedwait_recursive (__gthread_cond_t *cond, + __gthread_recursive_mutex_t *mutex, + const __gthread_time_t *abs_time) + +*/ + +#if SUPPORTS_WEAK +#ifndef GTHREAD_USE_WEAK +#define GTHREAD_USE_WEAK 1 +#endif +#endif +#include "gthr-default.h" + +#ifndef HIDE_EXPORTS +#pragma GCC visibility pop +#endif + +#endif /* ! GCC_GTHR_H */ |