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+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave 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(&_val, val); }
+
+ inline AtomicInt(const AtomicInt& copy)
+ { g_atomic_int_set(&_val, copy.get()); }
+
+ inline int get() const
+ { return g_atomic_int_get(&_val); }
+
+ inline void operator=(int val)
+ { g_atomic_int_set(&_val, val); }
+
+ inline void operator+=(int val)
+ { g_atomic_int_add(&_val, val); }
+
+ inline void operator-=(int val)
+ { g_atomic_int_add(&_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(&_val); return *this; }
+
+ inline AtomicInt& operator--() // prefix
+ { g_atomic_int_add(&_val, -1); return *this; }
+
+ /** Set value to newval iff current value is oldval.
+ * @return whether set succeeded.
+ */
+ inline bool compare_and_exchange(int oldval, int newval)
+ { return g_atomic_int_compare_and_exchange(&_val, oldval, newval); }
+
+ /** Add val to value.
+ * @return value immediately before addition took place.
+ */
+ inline int exchange_and_add(int val)
+ { return g_atomic_int_exchange_and_add(&_val, val); }
+
+ /** Decrement value.
+ * @return true if value is now 0, otherwise false.
+ */
+ inline bool decrement_and_test()
+ { return g_atomic_int_dec_and_test(&_val); }
+
+private:
+ volatile int _val;
+};
+
+
+} // namespace Raul
+
+#endif // RAUL_ATOMIC_INT_HPP