mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-24 14:19:33 +08:00
899905f6d3
* gthr-posix.h: Fix typo; compatibily -> compatibility. * gthr-single.h: Likewise. * gthr-solaris.h: Likewise. * gthr-vxworks.h: Likewise. * gthr-win32.h: Likewise. * gthr.h: Likewise. From-SVN: r31646
178 lines
4.0 KiB
C
178 lines
4.0 KiB
C
/* Threads compatibility routines for libgcc2. */
|
|
/* Compile this one with gcc. */
|
|
/* Copyright (C) 1997 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC 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 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU CC 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.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* As a special exception, if you link this library with other files,
|
|
some of which are compiled with GCC, to produce an executable,
|
|
this library does not by itself cause the resulting executable
|
|
to be covered by the GNU General Public License.
|
|
This exception does not however invalidate any other reasons why
|
|
the executable file might be covered by the GNU General Public License. */
|
|
|
|
#ifndef __gthr_solaris_h
|
|
#define __gthr_solaris_h
|
|
|
|
/* Solaris threads as found in Solaris 2.[456].
|
|
Actually these are Unix International (UI) threads, but I don't
|
|
know if anyone else implements these. */
|
|
|
|
#define __GTHREADS 1
|
|
|
|
#include <thread.h>
|
|
#include <errno.h>
|
|
|
|
typedef thread_key_t __gthread_key_t;
|
|
typedef struct
|
|
{
|
|
mutex_t mutex;
|
|
int once;
|
|
} __gthread_once_t;
|
|
typedef mutex_t __gthread_mutex_t;
|
|
|
|
#define __GTHREAD_ONCE_INIT { DEFAULTMUTEX, 0 }
|
|
#define __GTHREAD_MUTEX_INIT DEFAULTMUTEX
|
|
|
|
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
|
|
|
|
#pragma weak thr_keycreate
|
|
#pragma weak thr_getspecific
|
|
#pragma weak thr_setspecific
|
|
#pragma weak thr_create
|
|
|
|
#pragma weak mutex_lock
|
|
#pragma weak mutex_trylock
|
|
#pragma weak mutex_unlock
|
|
|
|
/* This will not actually work in Solaris 2.5, since libc contains
|
|
dummy symbols of all thr_* routines. */
|
|
|
|
static void *__gthread_active_ptr = &thr_create;
|
|
|
|
static inline int
|
|
__gthread_active_p ()
|
|
{
|
|
return __gthread_active_ptr != 0;
|
|
}
|
|
|
|
#else /* not SUPPORTS_WEAK */
|
|
|
|
static inline int
|
|
__gthread_active_p ()
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
#endif /* SUPPORTS_WEAK */
|
|
|
|
static inline int
|
|
__gthread_once (__gthread_once_t *once, void (*func) ())
|
|
{
|
|
if (! __gthread_active_p ())
|
|
return -1;
|
|
|
|
if (once == 0 || func == 0)
|
|
return EINVAL;
|
|
|
|
if (once->once == 0)
|
|
{
|
|
int status = mutex_lock (&once->mutex);
|
|
if (status != 0)
|
|
return status;
|
|
if (once->once == 0)
|
|
{
|
|
(*func) ();
|
|
once->once ++;
|
|
}
|
|
mutex_unlock (&once->mutex);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
|
|
{
|
|
/* Solaris 2.5 contains thr_* routines no-op in libc, so test if we actually
|
|
got a reasonable key value, and if not, fail. */
|
|
*key = -1;
|
|
if (thr_keycreate (key, dtor) != 0 || *key == -1)
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
__gthread_key_dtor (__gthread_key_t key, void *ptr)
|
|
{
|
|
/* Nothing needed. */
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
__gthread_key_delete (__gthread_key_t key)
|
|
{
|
|
/* Not possible. */
|
|
return -1;
|
|
}
|
|
|
|
static inline void *
|
|
__gthread_getspecific (__gthread_key_t key)
|
|
{
|
|
void *ptr;
|
|
if (thr_getspecific (key, &ptr) == 0)
|
|
return ptr;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
__gthread_setspecific (__gthread_key_t key, const void *ptr)
|
|
{
|
|
return thr_setspecific (key, (void *) ptr);
|
|
}
|
|
|
|
static inline int
|
|
__gthread_mutex_lock (__gthread_mutex_t *mutex)
|
|
{
|
|
if (__gthread_active_p ())
|
|
return mutex_lock (mutex);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
|
|
{
|
|
if (__gthread_active_p ())
|
|
return mutex_trylock (mutex);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
|
|
{
|
|
if (__gthread_active_p ())
|
|
return mutex_unlock (mutex);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
#endif /* not __gthr_solaris_h */
|