1 files changed, 75 insertions, 0 deletions
diff --git a/raul/AtomicInt.h b/raul/AtomicInt.h
new file mode 100644
index 0000000..ba8e4b0
--- /dev/null
+++ b/raul/AtomicInt.h
@@ -0,0 +1,75 @@
+/* This file is part of Ingen.  Copyright (C) 2007 Dave Robillard.
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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_H
+#define RAUL_ATOMIC_INT_H
+
+#include <glib.h>
+
+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 */
+	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;
+};
+
+#endif // RAUL_ATOMIC_INT_H