From ae90063afb7ddabcb505f8390b3b90bc7fea96ca Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Mon, 22 Jan 2007 04:07:53 +0000
Subject: Added atomic int/pointer classes to Raul. Added multi-writer queue to
 Raul. Renamed Queue SRSWQueue (single-reader single-writer). Updated
 patchage/ingen for Raul changes.

git-svn-id: http://svn.drobilla.net/lad/raul@264 a436a847-0d15-0410-975c-d299462d15a1
---
 raul/AtomicPtr.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 raul/AtomicPtr.h

(limited to 'raul/AtomicPtr.h')

diff --git a/raul/AtomicPtr.h b/raul/AtomicPtr.h
new file mode 100644
index 0000000..8209ca6
--- /dev/null
+++ b/raul/AtomicPtr.h
@@ -0,0 +1,43 @@
+/* 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_PTR_H
+#define RAUL_ATOMIC_PTR_H
+
+#include <glib.h>
+
+template<typename T>
+class AtomicPtr {
+public:
+
+	inline AtomicPtr(const AtomicPtr& copy)
+		{ g_atomic_pointer_set(&_val, copy.get()); }
+
+	inline T* get() const
+		{ return (T*)g_atomic_pointer_get(&_val); }
+
+	inline void operator=(T* val)
+		{ g_atomic_pointer_set(&_val, val); }
+
+	/** Set value to newval iff current value is oldval */
+	inline bool compare_and_exchange(int oldval, int newval)
+		{ return g_atomic_pointer_compare_and_exchange(&_val, oldval, newval); }
+
+private:
+	volatile T* _val;
+};
+
+#endif // RAUL_ATOMIC_PTR_H
-- 
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