93 lines
2.4 KiB
C++
93 lines
2.4 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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//
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// based on boost::interprocess::sync::interprocess_spinlock
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#ifndef BOOST_FIBERS_RECURSIVE_TIMED_MUTEX_H
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#define BOOST_FIBERS_RECURSIVE_TIMED_MUTEX_H
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#include <chrono>
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#include <cstddef>
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#include <boost/config.hpp>
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#include <boost/assert.hpp>
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#include <boost/fiber/context.hpp>
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#include <boost/fiber/detail/config.hpp>
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#include <boost/fiber/detail/convert.hpp>
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#include <boost/fiber/detail/spinlock.hpp>
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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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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable:4251)
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#endif
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namespace boost {
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namespace fibers {
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class condition_variable;
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class BOOST_FIBERS_DECL recursive_timed_mutex {
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private:
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friend class condition_variable;
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typedef context::wait_queue_t wait_queue_t;
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context * owner_{ nullptr };
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std::size_t count_{ 0 };
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wait_queue_t wait_queue_{};
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detail::spinlock wait_queue_splk_{};
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bool try_lock_until_( std::chrono::steady_clock::time_point const& timeout_time) noexcept;
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public:
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recursive_timed_mutex() = default;
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~recursive_timed_mutex() {
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BOOST_ASSERT( nullptr == owner_);
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BOOST_ASSERT( 0 == count_);
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BOOST_ASSERT( wait_queue_.empty() );
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}
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recursive_timed_mutex( recursive_timed_mutex const&) = delete;
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recursive_timed_mutex & operator=( recursive_timed_mutex const&) = delete;
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void lock();
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bool try_lock() noexcept;
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template< typename Clock, typename Duration >
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bool try_lock_until( std::chrono::time_point< Clock, Duration > const& timeout_time_) {
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std::chrono::steady_clock::time_point timeout_time(
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detail::convert( timeout_time_) );
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return try_lock_until_( timeout_time);
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}
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template< typename Rep, typename Period >
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bool try_lock_for( std::chrono::duration< Rep, Period > const& timeout_duration) {
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return try_lock_until_( std::chrono::steady_clock::now() + timeout_duration);
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}
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void unlock();
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};
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}}
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#ifdef _MSC_VER
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# pragma warning(pop)
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#endif
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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_RECURSIVE_TIMED_MUTEX_H
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