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89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/* GLIB - Library of useful routines for C programming
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* gatomic-gcc.c: atomic operations using GCC builtins.
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* Copyright (C) 2009 Hiroyuki Ikezoe
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "gatomic.h"
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gint
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g_atomic_int_exchange_and_add (volatile gint G_GNUC_MAY_ALIAS *atomic,
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gint val)
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{
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return __sync_fetch_and_add (atomic, val);
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}
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void
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g_atomic_int_add (volatile gint G_GNUC_MAY_ALIAS *atomic,
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gint val)
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{
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__sync_fetch_and_add (atomic, val);
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}
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gboolean
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g_atomic_int_compare_and_exchange (volatile gint G_GNUC_MAY_ALIAS *atomic,
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gint oldval,
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gint newval)
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{
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return __sync_bool_compare_and_swap (atomic, oldval, newval);
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}
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gboolean
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g_atomic_pointer_compare_and_exchange (volatile gpointer G_GNUC_MAY_ALIAS *atomic,
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gpointer oldval,
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gpointer newval)
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{
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return __sync_bool_compare_and_swap (atomic, oldval, newval);
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}
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void
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_g_atomic_thread_init (void)
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{
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}
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gint
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(g_atomic_int_get) (volatile gint G_GNUC_MAY_ALIAS *atomic)
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{
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__sync_synchronize ();
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return *atomic;
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}
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void
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(g_atomic_int_set) (volatile gint G_GNUC_MAY_ALIAS *atomic,
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gint newval)
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{
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*atomic = newval;
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__sync_synchronize ();
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}
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gpointer
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(g_atomic_pointer_get) (volatile gpointer G_GNUC_MAY_ALIAS *atomic)
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{
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__sync_synchronize ();
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return *atomic;
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}
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void
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(g_atomic_pointer_set) (volatile gpointer G_GNUC_MAY_ALIAS *atomic,
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gpointer newval)
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{
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*atomic = newval;
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__sync_synchronize ();
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}
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