/*

 * Copyright © 2008 Ryan Lortie

 * Copyright © 2010 Codethink Limited

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the licence, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 *

 * Author: Ryan Lortie <desrt@desrt.ca>

 */

#ifndef __G_BITLOCK_H__

#define __G_BITLOCK_H__

#include <glib/gtypes.h>

#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)

#error "Only <glib.h> can be included directly."

#endif

G_BEGIN_DECLS

void      g_bit_lock                      (volatile gint *address,

                                           gint           lock_bit);

gboolean  g_bit_trylock                   (volatile gint *address,

                                           gint           lock_bit);

void      g_bit_unlock                    (volatile gint *address,

                                           gint           lock_bit);

void      g_pointer_bit_lock              (volatile void *address,

                                           gint           lock_bit);

gboolean  g_pointer_bit_trylock           (volatile void *address,

                                           gint           lock_bit);

void      g_pointer_bit_unlock            (volatile void *address,

                                           gint           lock_bit);

#ifdef __GNUC__

#define g_pointer_bit_lock(address, lock_bit) \

  (G_GNUC_EXTENSION ({                                                       \

    G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer));                \

    g_pointer_bit_lock ((address), (lock_bit));                              \

  }))

#define g_pointer_bit_trylock(address, lock_bit) \

  (G_GNUC_EXTENSION ({                                                       \

    G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer));                \

    g_pointer_bit_trylock ((address), (lock_bit));                           \

  }))

#define g_pointer_bit_unlock(address, lock_bit) \

  (G_GNUC_EXTENSION ({                                                       \

    G_STATIC_ASSERT (sizeof *(address) == sizeof (gpointer));                \

    g_pointer_bit_unlock ((address), (lock_bit));                            \

  }))

#endif

G_END_DECLS

#endif /* __G_BITLOCK_H_ */