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/* GLIB - Library of useful routines for C programming
* gatomic-gcc.c: atomic operations using GCC builtins.
* Copyright (C) 2009 Hiroyuki Ikezoe
*
* 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 License, 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.
*/
#include "config.h"
#include "gatomic.h"
gint
g_atomic_int_exchange_and_add (volatile gint G_GNUC_MAY_ALIAS *atomic,
gint val)
{
return __sync_fetch_and_add (atomic, val);
}
void
g_atomic_int_add (volatile gint G_GNUC_MAY_ALIAS *atomic,
gint val)
{
__sync_fetch_and_add (atomic, val);
}
gboolean
g_atomic_int_compare_and_exchange (volatile gint G_GNUC_MAY_ALIAS *atomic,
gint oldval,
gint newval)
{
return __sync_bool_compare_and_swap (atomic, oldval, newval);
}
gboolean
g_atomic_pointer_compare_and_exchange (volatile gpointer G_GNUC_MAY_ALIAS *atomic,
gpointer oldval,
gpointer newval)
{
return __sync_bool_compare_and_swap (atomic, oldval, newval);
}
void
_g_atomic_thread_init (void)
{
}
gint
(g_atomic_int_get) (volatile gint G_GNUC_MAY_ALIAS *atomic)
{
__sync_synchronize ();
return *atomic;
}
void
(g_atomic_int_set) (volatile gint G_GNUC_MAY_ALIAS *atomic,
gint newval)
{
*atomic = newval;
__sync_synchronize ();
}
gpointer
(g_atomic_pointer_get) (volatile gpointer G_GNUC_MAY_ALIAS *atomic)
{
__sync_synchronize ();
return *atomic;
}
void
(g_atomic_pointer_set) (volatile gpointer G_GNUC_MAY_ALIAS *atomic,
gpointer newval)
{
*atomic = newval;
__sync_synchronize ();
}
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