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annotate DEPENDENCIES/generic/include/boost/lockfree/detail/prefix.hpp @ 133:4acb5d8d80b6 tip

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Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
author Chris Cannam
date Tue, 30 Jul 2019 12:25:44 +0100
parents 2665513ce2d3
children
rev   line source
Chris@16 1 // Copyright (C) 2009 Tim Blechmann
Chris@16 2 //
Chris@16 3 // Distributed under the Boost Software License, Version 1.0. (See
Chris@16 4 // accompanying file LICENSE_1_0.txt or copy at
Chris@16 5 // http://www.boost.org/LICENSE_1_0.txt)
Chris@16 6
Chris@16 7 #ifndef BOOST_LOCKFREE_PREFIX_HPP_INCLUDED
Chris@16 8 #define BOOST_LOCKFREE_PREFIX_HPP_INCLUDED
Chris@16 9
Chris@16 10 /* this file defines the following macros:
Chris@16 11 BOOST_LOCKFREE_CACHELINE_BYTES: size of a cache line
Chris@16 12 BOOST_LOCKFREE_PTR_COMPRESSION: use tag/pointer compression to utilize parts
Chris@16 13 of the virtual address space as tag (at least 16bit)
Chris@16 14 BOOST_LOCKFREE_DCAS_ALIGNMENT: symbol used for aligning structs at cache line
Chris@16 15 boundaries
Chris@16 16 */
Chris@16 17
Chris@16 18 #define BOOST_LOCKFREE_CACHELINE_BYTES 64
Chris@16 19
Chris@16 20 #ifdef _MSC_VER
Chris@16 21
Chris@16 22 #define BOOST_LOCKFREE_CACHELINE_ALIGNMENT __declspec(align(BOOST_LOCKFREE_CACHELINE_BYTES))
Chris@16 23
Chris@16 24 #if defined(_M_IX86)
Chris@16 25 #define BOOST_LOCKFREE_DCAS_ALIGNMENT
Chris@16 26 #elif defined(_M_X64) || defined(_M_IA64)
Chris@16 27 #define BOOST_LOCKFREE_PTR_COMPRESSION 1
Chris@16 28 #define BOOST_LOCKFREE_DCAS_ALIGNMENT __declspec(align(16))
Chris@16 29 #endif
Chris@16 30
Chris@16 31 #endif /* _MSC_VER */
Chris@16 32
Chris@16 33 #ifdef __GNUC__
Chris@16 34
Chris@16 35 #define BOOST_LOCKFREE_CACHELINE_ALIGNMENT __attribute__((aligned(BOOST_LOCKFREE_CACHELINE_BYTES)))
Chris@16 36
Chris@16 37 #if defined(__i386__) || defined(__ppc__)
Chris@16 38 #define BOOST_LOCKFREE_DCAS_ALIGNMENT
Chris@16 39 #elif defined(__x86_64__)
Chris@16 40 #define BOOST_LOCKFREE_PTR_COMPRESSION 1
Chris@16 41 #define BOOST_LOCKFREE_DCAS_ALIGNMENT __attribute__((aligned(16)))
Chris@16 42 #elif defined(__alpha__)
Chris@16 43 // LATER: alpha may benefit from pointer compression. but what is the maximum size of the address space?
Chris@16 44 #define BOOST_LOCKFREE_DCAS_ALIGNMENT
Chris@16 45 #endif
Chris@16 46 #endif /* __GNUC__ */
Chris@16 47
Chris@16 48 #ifndef BOOST_LOCKFREE_DCAS_ALIGNMENT
Chris@16 49 #define BOOST_LOCKFREE_DCAS_ALIGNMENT /*BOOST_LOCKFREE_DCAS_ALIGNMENT*/
Chris@16 50 #endif
Chris@16 51
Chris@16 52 #ifndef BOOST_LOCKFREE_CACHELINE_ALIGNMENT
Chris@16 53 #define BOOST_LOCKFREE_CACHELINE_ALIGNMENT /*BOOST_LOCKFREE_CACHELINE_ALIGNMENT*/
Chris@16 54 #endif
Chris@16 55
Chris@16 56 #endif /* BOOST_LOCKFREE_PREFIX_HPP_INCLUDED */