63e88f80
 Hu Chunming
提交三方库
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// Copyright Oliver Kowalke 2013.
// 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_FIBERS_SPINLOCK_H
#define BOOST_FIBERS_SPINLOCK_H
#include <boost/config.hpp>
#include <boost/fiber/detail/config.hpp>
#if !defined(BOOST_FIBERS_NO_ATOMICS)
# include <mutex>
# include <boost/fiber/detail/spinlock_ttas_adaptive.hpp>
# include <boost/fiber/detail/spinlock_ttas.hpp>
# if defined(BOOST_FIBERS_HAS_FUTEX)
# include <boost/fiber/detail/spinlock_ttas_adaptive_futex.hpp>
# include <boost/fiber/detail/spinlock_ttas_futex.hpp>
# endif
# if defined(BOOST_USE_TSX)
# include <boost/fiber/detail/spinlock_rtm.hpp>
# endif
#endif
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
namespace boost {
namespace fibers {
namespace detail {
#if defined(BOOST_FIBERS_NO_ATOMICS)
struct spinlock {
constexpr spinlock() noexcept {}
void lock() noexcept {}
void unlock() noexcept {}
};
struct spinlock_lock {
constexpr spinlock_lock( spinlock &) noexcept {}
void lock() noexcept {}
void unlock() noexcept {}
};
#else
# if defined(BOOST_FIBERS_SPINLOCK_STD_MUTEX)
using spinlock = std::mutex;
# elif defined(BOOST_FIBERS_SPINLOCK_TTAS_FUTEX)
# if defined(BOOST_USE_TSX)
using spinlock = spinlock_rtm< spinlock_ttas_futex >;
# else
using spinlock = spinlock_ttas_futex;
# endif
# elif defined(BOOST_FIBERS_SPINLOCK_TTAS_ADAPTIVE_FUTEX)
# if defined(BOOST_USE_TSX)
using spinlock = spinlock_rtm< spinlock_ttas_adaptive_futex >;
# else
using spinlock = spinlock_ttas_adaptive_futex;
# endif
# elif defined(BOOST_FIBERS_SPINLOCK_TTAS_ADAPTIVE)
# if defined(BOOST_USE_TSX)
using spinlock = spinlock_rtm< spinlock_ttas_adaptive >;
# else
using spinlock = spinlock_ttas_adaptive;
# endif
# else
# if defined(BOOST_USE_TSX)
using spinlock = spinlock_rtm< spinlock_ttas >;
# else
using spinlock = spinlock_ttas;
# endif
# endif
using spinlock_lock = std::unique_lock< spinlock >;
#endif
}}}
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
#endif // BOOST_FIBERS_SPINLOCK_H
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