comparison DEPENDENCIES/generic/include/boost/lockfree/detail/prefix.hpp @ 16:2665513ce2d3

Add boost headers

+//  Copyright (C) 2009 Tim Blechmann
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_LOCKFREE_PREFIX_HPP_INCLUDED
+#define BOOST_LOCKFREE_PREFIX_HPP_INCLUDED
+
+/* this file defines the following macros:
+   BOOST_LOCKFREE_CACHELINE_BYTES: size of a cache line
+   BOOST_LOCKFREE_PTR_COMPRESSION: use tag/pointer compression to utilize parts
+                                   of the virtual address space as tag (at least 16bit)
+   BOOST_LOCKFREE_DCAS_ALIGNMENT:  symbol used for aligning structs at cache line
+                                   boundaries
+*/
+
+#define BOOST_LOCKFREE_CACHELINE_BYTES 64
+
+#ifdef _MSC_VER
+
+#define BOOST_LOCKFREE_CACHELINE_ALIGNMENT __declspec(align(BOOST_LOCKFREE_CACHELINE_BYTES))
+
+#if defined(_M_IX86)
+    #define BOOST_LOCKFREE_DCAS_ALIGNMENT
+#elif defined(_M_X64) || defined(_M_IA64)
+    #define BOOST_LOCKFREE_PTR_COMPRESSION 1
+    #define BOOST_LOCKFREE_DCAS_ALIGNMENT __declspec(align(16))
+#endif
+
+#endif /* _MSC_VER */
+
+#ifdef __GNUC__
+
+#define BOOST_LOCKFREE_CACHELINE_ALIGNMENT __attribute__((aligned(BOOST_LOCKFREE_CACHELINE_BYTES)))
+
+#if defined(__i386__) || defined(__ppc__)
+    #define BOOST_LOCKFREE_DCAS_ALIGNMENT
+#elif defined(__x86_64__)
+    #define BOOST_LOCKFREE_PTR_COMPRESSION 1
+    #define BOOST_LOCKFREE_DCAS_ALIGNMENT __attribute__((aligned(16)))
+#elif defined(__alpha__)
+    // LATER: alpha may benefit from pointer compression. but what is the maximum size of the address space?
+    #define BOOST_LOCKFREE_DCAS_ALIGNMENT
+#endif
+#endif /* __GNUC__ */
+
+#ifndef BOOST_LOCKFREE_DCAS_ALIGNMENT
+#define BOOST_LOCKFREE_DCAS_ALIGNMENT /*BOOST_LOCKFREE_DCAS_ALIGNMENT*/
+#endif
+
+#ifndef BOOST_LOCKFREE_CACHELINE_ALIGNMENT
+#define BOOST_LOCKFREE_CACHELINE_ALIGNMENT /*BOOST_LOCKFREE_CACHELINE_ALIGNMENT*/
+#endif
+
+#endif /* BOOST_LOCKFREE_PREFIX_HPP_INCLUDED */