1 files changed, 56 insertions, 0 deletions
diff --git a/raul/barrier.hpp b/raul/barrier.hpp
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+/*
+  This file is part of Raul.
+  Copyright 2012 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 3 of the License, or 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 more details.
+
+  You should have received a copy of the GNU General Public License
+  along with Raul.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef RAUL_BARRIER_HPP
+#define RAUL_BARRIER_HPP
+
+#if defined(__APPLE__)
+#include <libkern/OSAtomic.h>
+
+namespace Raul {
+static inline void barrier() {
+	OSMemoryBarrier();
+}
+}
+
+#elif defined(_WIN32)
+#include <windows.h>
+
+namespace Raul {
+static inline void barrier() {
+	MemoryBarrier();
+}
+}
+
+#elif (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+
+namespace Raul {
+static inline void barrier() {
+	__sync_synchronize();
+}
+}
+
+#else
+#pragma message("warning: No memory barriers, possible SMP bugs")
+
+namespace Raul {
+static inline void barrier() {
+}
+}
+
+#endif
+
+#endif // RAUL_BARRIER_HPP