diff options
Diffstat (limited to 'lib/asio/detail/gcc_x86_fenced_block.hpp')
-rw-r--r-- | lib/asio/detail/gcc_x86_fenced_block.hpp | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/lib/asio/detail/gcc_x86_fenced_block.hpp b/lib/asio/detail/gcc_x86_fenced_block.hpp deleted file mode 100644 index 1366def..0000000 --- a/lib/asio/detail/gcc_x86_fenced_block.hpp +++ /dev/null @@ -1,99 +0,0 @@ -// -// detail/gcc_x86_fenced_block.hpp -// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) -// -// 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 ASIO_DETAIL_GCC_X86_FENCED_BLOCK_HPP -#define ASIO_DETAIL_GCC_X86_FENCED_BLOCK_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include "asio/detail/config.hpp" - -#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) - -#include "asio/detail/noncopyable.hpp" - -#include "asio/detail/push_options.hpp" - -namespace asio { -namespace detail { - -class gcc_x86_fenced_block - : private noncopyable -{ -public: - enum half_t { half }; - enum full_t { full }; - - // Constructor for a half fenced block. - explicit gcc_x86_fenced_block(half_t) - { - } - - // Constructor for a full fenced block. - explicit gcc_x86_fenced_block(full_t) - { - lbarrier(); - } - - // Destructor. - ~gcc_x86_fenced_block() - { - sbarrier(); - } - -private: - static int barrier() - { - int r = 0, m = 1; - __asm__ __volatile__ ( - "xchgl %0, %1" : - "=r"(r), "=m"(m) : - "0"(1), "m"(m) : - "memory", "cc"); - return r; - } - - static void lbarrier() - { -#if defined(__SSE2__) -# if (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL) - __builtin_ia32_lfence(); -# else // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL) - __asm__ __volatile__ ("lfence" ::: "memory"); -# endif // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL) -#else // defined(__SSE2__) - barrier(); -#endif // defined(__SSE2__) - } - - static void sbarrier() - { -#if defined(__SSE2__) -# if (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL) - __builtin_ia32_sfence(); -# else // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL) - __asm__ __volatile__ ("sfence" ::: "memory"); -# endif // (__GNUC__ >= 4) && !defined(__INTEL_COMPILER) && !defined(__ICL) -#else // defined(__SSE2__) - barrier(); -#endif // defined(__SSE2__) - } -}; - -} // namespace detail -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#endif // defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) - -#endif // ASIO_DETAIL_GCC_X86_FENCED_BLOCK_HPP |