63e88f80
 Hu Chunming
提交三方库
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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 || ( (BOOST_ARCH_ARM >= BOOST_VERSION_NUMBER(8,0,0)) && !BOOST_PLAT_ANDROID )
#define BOOST_LOCKFREE_PTR_COMPRESSION 1
#endif
#endif /* BOOST_LOCKFREE_PREFIX_HPP_INCLUDED */
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