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/* Threads compatibility routines for libgcc2.  */

/* Compile this one with gcc.  */

/* Copyright (C) 2003, 2004 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 2, 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.

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

Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301, 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.  */

#include "gthr-gnat.h"

#ifndef HIDE_EXPORTS

#pragma GCC visibility push(default)

#endif

#ifdef __cplusplus

#define UNUSED(x)

#else

#define UNUSED(x) x __attribute__((unused))

#endif

void __gnat_default_lock (void);

void __gnat_default_unlock (void);

void

__gnat_default_lock (void)

{

  return;

}

void

__gnat_default_unlock (void)

{

  return;

}

static void (*__gnat_task_lock) (void) = *__gnat_default_lock;

static void (*__gnat_task_unlock) (void) = *__gnat_default_unlock;

 void

__gnat_install_locks (void (*lock) (void), void (*unlock) (void))

{

  __gnat_task_lock = lock;

  __gnat_task_unlock = unlock;

}

int

__gthread_active_p (void)

{

  return 0;

}

int

__gthread_mutex_lock (__gthread_mutex_t * UNUSED (mutex))

{

  __gnat_task_lock ();

  return 0;

}

int

__gthread_mutex_unlock (__gthread_mutex_t * UNUSED (mutex))

{

  __gnat_task_unlock ();

  return 0;

}

#ifndef HIDE_EXPORTS

#pragma GCC visibility pop

#endif