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- // Copyright (C) 2009, 2016 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)
- */
- #if defined(__s390__) || defined(__s390x__)
- #define BOOST_LOCKFREE_CACHELINE_BYTES 256
- #elif defined(powerpc) || defined(__powerpc__) || defined(__ppc__)
- #define BOOST_LOCKFREE_CACHELINE_BYTES 128
- #else
- #define BOOST_LOCKFREE_CACHELINE_BYTES 64
- #endif
- #include <boost/predef.h>
- #if BOOST_ARCH_X86_64 || defined (__aarch64__)
- #define BOOST_LOCKFREE_PTR_COMPRESSION 1
- #endif
- #endif /* BOOST_LOCKFREE_PREFIX_HPP_INCLUDED */
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