66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
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// Copyright Oliver Kowalke 2013.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_FIBERS_SPINLOCK_H
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#define BOOST_FIBERS_SPINLOCK_H
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#include <boost/config.hpp>
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#include <boost/fiber/detail/config.hpp>
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#if !defined(BOOST_FIBERS_NO_ATOMICS)
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# include <mutex>
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# include <boost/fiber/detail/spinlock_ttas.hpp>
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# include <boost/fiber/detail/spinlock_ttas_adaptive.hpp>
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# if defined(BOOST_FIBERS_HAS_FUTEX)
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# include <boost/fiber/detail/spinlock_ttas_futex.hpp>
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# include <boost/fiber/detail/spinlock_ttas_adaptive_futex.hpp>
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# endif
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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namespace boost {
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namespace fibers {
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namespace detail {
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#if defined(BOOST_FIBERS_NO_ATOMICS)
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struct spinlock {
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constexpr spinlock() noexcept {}
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void lock() noexcept {}
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void unlock() noexcept {}
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};
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struct spinlock_lock {
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constexpr spinlock_lock( spinlock &) noexcept {}
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void lock() noexcept {}
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void unlock() noexcept {}
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};
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#else
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# if defined(BOOST_FIBERS_SPINLOCK_STD_MUTEX)
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using spinlock = std::mutex;
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# elif defined(BOOST_FIBERS_SPINLOCK_TTAS_FUTEX)
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using spinlock = spinlock_ttas_futex;
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# elif defined(BOOST_FIBERS_SPINLOCK_TTAS_ADAPTIVE_FUTEX)
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using spinlock = spinlock_ttas_adaptive_futex;
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# elif defined(BOOST_FIBERS_SPINLOCK_TTAS_ADAPTIVE)
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using spinlock = spinlock_ttas_adaptive;
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# else
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using spinlock = spinlock_ttas;
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# endif
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using spinlock_lock = std::unique_lock< spinlock >;
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#endif
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}}}
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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#endif // BOOST_FIBERS_SPINLOCK_H
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