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/*
* Copyright (c) 2002-2012 BalaBit IT Ltd, Budapest, Hungary
* Copyright (c) 1998-2012 Balázs Scheidler
*
* 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#ifndef ATOMIC_H_INCLUDED
#define ATOMIC_H_INCLUDED
typedef struct
{
gint counter;
} GAtomicCounter;
static inline void
g_atomic_counter_inc(GAtomicCounter *c)
{
g_atomic_int_inc(&c->counter);
}
static inline gboolean
g_atomic_counter_dec_and_test(GAtomicCounter *c)
{
return g_atomic_int_dec_and_test(&c->counter);
}
static inline gint
g_atomic_counter_get(GAtomicCounter *c)
{
return g_atomic_int_get(&c->counter);
}
static inline gint
g_atomic_counter_exchange_and_add(GAtomicCounter *c, gint val)
{
#if GLIB_CHECK_VERSION(2, 30, 0)
return g_atomic_int_add(&c->counter, val);
#else
return g_atomic_int_exchange_and_add(&c->counter, val);
#endif
}
static inline gint
g_atomic_counter_racy_get(GAtomicCounter *c)
{
return c->counter;
}
static inline void
g_atomic_counter_set(GAtomicCounter *c, gint value)
{
/* FIXME: we should use g_atomic_int_set, but that's available starting
* with GLib 2.10 only, and we only use this function for initialization,
* thus atomic write is not strictly needed as there's no concurrency
* while initializing a refcounter.
*/
c->counter = value;
}
#endif
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