/* Threads compatibility routines for libgcc2. */
|
/* Threads compatibility routines for libgcc2. */
|
/* Compile this one with gcc. */
|
/* Compile this one with gcc. */
|
/* Copyright (C) 1997, 1998, 2004 Free Software Foundation, Inc.
|
/* Copyright (C) 1997, 1998, 2004 Free Software Foundation, Inc.
|
|
|
This file is part of GCC.
|
This file is part of GCC.
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
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
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 2, or (at your option) any later
|
Software Foundation; either version 2, or (at your option) any later
|
version.
|
version.
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
for more details.
|
for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING. If not, write to the Free
|
along with GCC; see the file COPYING. If not, write to the Free
|
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
|
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
|
02110-1301, USA. */
|
02110-1301, USA. */
|
|
|
/* As a special exception, if you link this library with other files,
|
/* As a special exception, if you link this library with other files,
|
some of which are compiled with GCC, to produce an executable,
|
some of which are compiled with GCC, to produce an executable,
|
this library does not by itself cause the resulting executable
|
this library does not by itself cause the resulting executable
|
to be covered by the GNU General Public License.
|
to be covered by the GNU General Public License.
|
This exception does not however invalidate any other reasons why
|
This exception does not however invalidate any other reasons why
|
the executable file might be covered by the GNU General Public License. */
|
the executable file might be covered by the GNU General Public License. */
|
|
|
#ifndef GCC_GTHR_H
|
#ifndef GCC_GTHR_H
|
#define GCC_GTHR_H
|
#define GCC_GTHR_H
|
|
|
#ifndef HIDE_EXPORTS
|
#ifndef HIDE_EXPORTS
|
#pragma GCC visibility push(default)
|
#pragma GCC visibility push(default)
|
#endif
|
#endif
|
|
|
/* If this file is compiled with threads support, it must
|
/* If this file is compiled with threads support, it must
|
#define __GTHREADS 1
|
#define __GTHREADS 1
|
to indicate that threads support is present. Also it has define
|
to indicate that threads support is present. Also it has define
|
function
|
function
|
int __gthread_active_p ()
|
int __gthread_active_p ()
|
that returns 1 if thread system is active, 0 if not.
|
that returns 1 if thread system is active, 0 if not.
|
|
|
The threads interface must define the following types:
|
The threads interface must define the following types:
|
__gthread_key_t
|
__gthread_key_t
|
__gthread_once_t
|
__gthread_once_t
|
__gthread_mutex_t
|
__gthread_mutex_t
|
__gthread_recursive_mutex_t
|
__gthread_recursive_mutex_t
|
|
|
The threads interface must define the following macros:
|
The threads interface must define the following macros:
|
|
|
__GTHREAD_ONCE_INIT
|
__GTHREAD_ONCE_INIT
|
to initialize __gthread_once_t
|
to initialize __gthread_once_t
|
__GTHREAD_MUTEX_INIT
|
__GTHREAD_MUTEX_INIT
|
to initialize __gthread_mutex_t to get a fast
|
to initialize __gthread_mutex_t to get a fast
|
non-recursive mutex.
|
non-recursive mutex.
|
__GTHREAD_MUTEX_INIT_FUNCTION
|
__GTHREAD_MUTEX_INIT_FUNCTION
|
some systems can't initialize a mutex without a
|
some systems can't initialize a mutex without a
|
function call. On such systems, define this to a
|
function call. On such systems, define this to a
|
function which looks like this:
|
function which looks like this:
|
void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *)
|
void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *)
|
Don't define __GTHREAD_MUTEX_INIT in this case
|
Don't define __GTHREAD_MUTEX_INIT in this case
|
__GTHREAD_RECURSIVE_MUTEX_INIT
|
__GTHREAD_RECURSIVE_MUTEX_INIT
|
__GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION
|
__GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION
|
as above, but for a recursive mutex.
|
as above, but for a recursive mutex.
|
|
|
The threads interface must define the following static functions:
|
The threads interface must define the following static functions:
|
|
|
int __gthread_once (__gthread_once_t *once, void (*func) ())
|
int __gthread_once (__gthread_once_t *once, void (*func) ())
|
|
|
int __gthread_key_create (__gthread_key_t *keyp, void (*dtor) (void *))
|
int __gthread_key_create (__gthread_key_t *keyp, void (*dtor) (void *))
|
int __gthread_key_delete (__gthread_key_t key)
|
int __gthread_key_delete (__gthread_key_t key)
|
|
|
void *__gthread_getspecific (__gthread_key_t key)
|
void *__gthread_getspecific (__gthread_key_t key)
|
int __gthread_setspecific (__gthread_key_t key, const void *ptr)
|
int __gthread_setspecific (__gthread_key_t key, const void *ptr)
|
|
|
int __gthread_mutex_lock (__gthread_mutex_t *mutex);
|
int __gthread_mutex_lock (__gthread_mutex_t *mutex);
|
int __gthread_mutex_trylock (__gthread_mutex_t *mutex);
|
int __gthread_mutex_trylock (__gthread_mutex_t *mutex);
|
int __gthread_mutex_unlock (__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_lock (__gthread_recursive_mutex_t *mutex);
|
int __gthread_recursive_mutex_trylock (__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);
|
int __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex);
|
|
|
All functions returning int should return zero on success or the error
|
All functions returning int should return zero on success or the error
|
number. If the operation is not supported, -1 is returned.
|
number. If the operation is not supported, -1 is returned.
|
|
|
Currently supported threads packages are
|
Currently supported threads packages are
|
TPF threads with -D__tpf__
|
TPF threads with -D__tpf__
|
POSIX/Unix98 threads with -D_PTHREADS
|
POSIX/Unix98 threads with -D_PTHREADS
|
POSIX/Unix95 threads with -D_PTHREADS95
|
POSIX/Unix95 threads with -D_PTHREADS95
|
DCE threads with -D_DCE_THREADS
|
DCE threads with -D_DCE_THREADS
|
Solaris/UI threads with -D_SOLARIS_THREADS
|
Solaris/UI threads with -D_SOLARIS_THREADS
|
*/
|
*/
|
|
|
/* Check first for thread specific defines. */
|
/* Check first for thread specific defines. */
|
#if defined (__tpf__)
|
#if defined (__tpf__)
|
#include "gthr-tpf.h"
|
#include "gthr-tpf.h"
|
#elif _PTHREADS
|
#elif _PTHREADS
|
#include "gthr-posix.h"
|
#include "gthr-posix.h"
|
#elif _PTHREADS95
|
#elif _PTHREADS95
|
#include "gthr-posix95.h"
|
#include "gthr-posix95.h"
|
#elif _DCE_THREADS
|
#elif _DCE_THREADS
|
#include "gthr-dce.h"
|
#include "gthr-dce.h"
|
#elif _SOLARIS_THREADS
|
#elif _SOLARIS_THREADS
|
#include "gthr-solaris.h"
|
#include "gthr-solaris.h"
|
|
|
/* Include GTHREAD_FILE if one is defined. */
|
/* Include GTHREAD_FILE if one is defined. */
|
#elif defined(HAVE_GTHR_DEFAULT)
|
#elif defined(HAVE_GTHR_DEFAULT)
|
#if SUPPORTS_WEAK
|
#if SUPPORTS_WEAK
|
#ifndef GTHREAD_USE_WEAK
|
#ifndef GTHREAD_USE_WEAK
|
#define GTHREAD_USE_WEAK 1
|
#define GTHREAD_USE_WEAK 1
|
#endif
|
#endif
|
#endif
|
#endif
|
#include "gthr-default.h"
|
#include "gthr-default.h"
|
|
|
/* Fallback to single thread definitions. */
|
/* Fallback to single thread definitions. */
|
#else
|
#else
|
#include "gthr-single.h"
|
#include "gthr-single.h"
|
#endif
|
#endif
|
|
|
#ifndef HIDE_EXPORTS
|
#ifndef HIDE_EXPORTS
|
#pragma GCC visibility pop
|
#pragma GCC visibility pop
|
#endif
|
#endif
|
|
|
#endif /* ! GCC_GTHR_H */
|
#endif /* ! GCC_GTHR_H */
|
|
|
