JavaScriptCore-903.tar.gz

[apple/javascriptcore.git] / wtf / Alignment.h

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+/*
+ *  Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef WTF_Alignment_h
+#define WTF_Alignment_h
+
+#include <wtf/Platform.h>
+
+#if COMPILER(GCC) || COMPILER(MINGW) || COMPILER(RVCT) || COMPILER(WINSCW) || COMPILER(GCCE)
+    #define WTF_ALIGN_OF(type) __alignof__(type)
+    #define WTF_ALIGNED(variable_type, variable, n) variable_type variable __attribute__((__aligned__(n)))
+#elif COMPILER(MSVC)
+    #define WTF_ALIGN_OF(type) __alignof(type)
+    #define WTF_ALIGNED(variable_type, variable, n) __declspec(align(n)) variable_type variable
+#else
+    #error WTF_ALIGN macros need alignment control.
+#endif
+
+#endif // WTF_Alignment_h