216 lines
6.0 KiB
C
216 lines
6.0 KiB
C
/* Threads compatibility routines for libgcc2 and libobjc. */
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/* Compile this one with gcc. */
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/* Copyright (C) 1999-2015 Free Software Foundation, Inc.
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Contributed by Mumit Khan <khan@xraylith.wisc.edu>.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_GTHR_KOS32_H
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#define GCC_GTHR_KOS32_H
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/* Make sure CONST_CAST2 (origin in system.h) is declared. */
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#ifndef CONST_CAST2
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#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
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#endif
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#define __GTHREADS 1
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#include <stddef.h>
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#ifndef __UNUSED_PARAM
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#define __UNUSED_PARAM(x) x
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned long __gthread_key_t;
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typedef struct
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{
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int done;
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long started;
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} __gthread_once_t;
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typedef struct
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{
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volatile int lock;
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int handle;
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} __gthread_mutex_t;
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typedef struct
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{
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volatile int lock;
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int handle;
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long depth;
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unsigned long owner;
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} __gthread_recursive_mutex_t;
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#define __GTHREAD_ONCE_INIT {0, -1}
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#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
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#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION \
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__gthread_recursive_mutex_init_function
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#if defined (_WIN32) && !defined(__CYGWIN__)
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#define MINGW32_SUPPORTS_MT_EH 1
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/* Mingw runtime >= v0.3 provides a magic variable that is set to nonzero
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if -mthreads option was specified, or 0 otherwise. This is to get around
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the lack of weak symbols in PE-COFF. */
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extern int _CRT_MT;
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extern int __mingwthr_key_dtor (unsigned long, void (*) (void *));
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#endif /* _WIN32 && !__CYGWIN__ */
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static inline int __gthread_active_p (void)
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{
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#ifdef MINGW32_SUPPORTS_MT_EH
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return _CRT_MT;
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#else
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return 1;
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#endif
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}
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extern int __gthr_kos32_once (__gthread_once_t *, void (*) (void));
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extern int __gthr_kos32_key_create (__gthread_key_t *, void (*) (void*));
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extern int __gthr_kos32_key_delete (__gthread_key_t);
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extern void * __gthr_kos32_getspecific (__gthread_key_t);
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extern int __gthr_kos32_setspecific (__gthread_key_t, const void *);
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extern void __gthr_kos32_mutex_init_function (__gthread_mutex_t *);
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extern int __gthr_kos32_mutex_lock (__gthread_mutex_t *);
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extern int __gthr_kos32_mutex_trylock (__gthread_mutex_t *);
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extern int __gthr_kos32_mutex_unlock (__gthread_mutex_t *);
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extern void __gthr_kos32_recursive_mutex_init_function (__gthread_recursive_mutex_t *);
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extern int __gthr_kos32_recursive_mutex_lock (__gthread_recursive_mutex_t *);
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extern int __gthr_kos32_recursive_mutex_trylock (__gthread_recursive_mutex_t *);
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extern int __gthr_kos32_recursive_mutex_unlock (__gthread_recursive_mutex_t *);
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extern void __gthr_kos32_mutex_destroy (__gthread_mutex_t *);
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extern int __gthr_kos32_recursive_mutex_destroy (__gthread_recursive_mutex_t *);
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static inline int __gthread_once (__gthread_once_t *__once, void (*__func) (void))
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{
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if (__gthread_active_p ())
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return __gthr_kos32_once (__once, __func);
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else
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return -1;
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}
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static inline int __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
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{
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return __gthr_kos32_key_create (__key, __dtor);
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}
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static inline int __gthread_key_delete (__gthread_key_t __key)
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{
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return __gthr_kos32_key_delete (__key);
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}
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static inline void* __gthread_getspecific (__gthread_key_t __key)
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{
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return __gthr_kos32_getspecific (__key);
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}
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static inline int __gthread_setspecific (__gthread_key_t __key, const void *__ptr)
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{
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return __gthr_kos32_setspecific (__key, __ptr);
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}
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static inline void __gthread_mutex_init_function (__gthread_mutex_t *__mutex)
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{
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__gthr_kos32_mutex_init_function(__mutex);
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}
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static inline void __gthread_mutex_destroy (__gthread_mutex_t *__mutex)
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{
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__gthr_kos32_mutex_destroy (__mutex);
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}
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static inline int __gthread_mutex_lock (__gthread_mutex_t *__mutex)
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{
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if (__gthread_active_p ())
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return __gthr_kos32_mutex_lock (__mutex);
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else
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return 0;
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}
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static inline int __gthread_mutex_trylock (__gthread_mutex_t *__mutex)
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{
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if (__gthread_active_p ())
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return __gthr_kos32_mutex_trylock (__mutex);
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else
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return 0;
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}
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static inline int __gthread_mutex_unlock (__gthread_mutex_t *__mutex)
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{
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if (__gthread_active_p ())
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return __gthr_kos32_mutex_unlock (__mutex);
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else
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return 0;
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}
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static inline void __gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
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{
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__gthr_kos32_recursive_mutex_init_function (__mutex);
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}
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static inline int __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
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{
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if (__gthread_active_p ())
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return __gthr_kos32_recursive_mutex_lock (__mutex);
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else
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return 0;
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}
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static inline int __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
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{
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if (__gthread_active_p ())
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return __gthr_kos32_recursive_mutex_trylock (__mutex);
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else
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return 0;
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}
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static inline int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
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{
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if (__gthread_active_p ())
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return __gthr_kos32_recursive_mutex_unlock (__mutex);
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else
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return 0;
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}
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static inline int __gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t *__mutex)
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{
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return __gthr_kos32_recursive_mutex_destroy (__mutex);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* ! GCC_GTHR_WIN32_H */
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