AtomicInt.hpp
/* This file is part of Raul.
* Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
*
* Raul 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 of the License, or (at your option) any later
* version.
*
* Raul 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 details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef RAUL_ATOMIC_INT_HPP
#define RAUL_ATOMIC_INT_HPP
#include <glib.h>
namespace Raul {
class AtomicInt {
public:
inline AtomicInt(int val)
{ g_atomic_int_set(static_cast<volatile gint*>(&_val), val); }
inline AtomicInt(const AtomicInt& copy)
{ g_atomic_int_set(static_cast<volatile gint*>(&_val), copy.get()); }
inline int get() const
{ return g_atomic_int_get(static_cast<volatile gint*>(&_val)); }
inline void operator=(int val)
{ g_atomic_int_set(static_cast<volatile gint*>(&_val), val); }
inline void operator+=(int val)
{ g_atomic_int_add(static_cast<volatile gint*>(&_val), val); }
inline void operator-=(int val)
{ g_atomic_int_add(static_cast<volatile gint*>(&_val), -val); }
inline bool operator==(int val) const
{ return get() == val; }
inline int operator+(int val) const
{ return get() + val; }
inline AtomicInt& operator++() // prefix
{ g_atomic_int_inc(static_cast<volatile gint*>(&_val)); return *this; }
inline AtomicInt& operator--() // prefix
{ g_atomic_int_add(static_cast<volatile gint*>(&_val), -1); return *this; }
inline bool compare_and_exchange(int old, int val)
{ return g_atomic_int_compare_and_exchange(static_cast<volatile gint*>(&_val), old, val); }
inline int exchange_and_add(int val)
{ return g_atomic_int_exchange_and_add(static_cast<volatile gint*>(&_val), val); }
inline bool decrement_and_test()
{ return g_atomic_int_dec_and_test(static_cast<volatile gint*>(&_val)); }
private:
volatile mutable int _val;
};
} // namespace Raul
#endif // RAUL_ATOMIC_INT_HPP
Raul
Definition: Array.hpp:26
Raul::AtomicInt::compare_and_exchange
bool compare_and_exchange(int old, int val)
Set value to val iff current value is old.
Definition: AtomicInt.hpp:64
Raul::AtomicInt
Atomic integer.
Definition: AtomicInt.hpp:29
Raul::AtomicInt::decrement_and_test
bool decrement_and_test()
Decrement value.
Definition: AtomicInt.hpp:76
Raul::AtomicInt::exchange_and_add
int exchange_and_add(int val)
Add val to value.
Definition: AtomicInt.hpp:70