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101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/*
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* Copyright 2016-present Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* This file contains LockTraits specializations for boost mutex types.
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*
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* These need to be specialized simply due to the fact that the timed
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* methods take boost::chrono arguments instead of std::chrono.
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*/
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#pragma once
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#include <boost/thread.hpp>
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#include <folly/LockTraits.h>
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#if FOLLY_LOCK_TRAITS_HAVE_TIMED_MUTEXES
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namespace folly {
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namespace detail {
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/// Convert a std::chrono::duration argument to boost::chrono::duration
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template <class Rep, std::intmax_t Num, std::intmax_t Denom>
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boost::chrono::duration<Rep, boost::ratio<Num, Denom>> toBoostDuration(
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const std::chrono::duration<Rep, std::ratio<Num, Denom>>& d) {
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return boost::chrono::duration<Rep, boost::ratio<Num, Denom>>(d.count());
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}
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} // namespace detail
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/**
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* LockTraits specialization for boost::shared_mutex
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*/
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template <>
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struct LockTraits<boost::shared_mutex>
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: public LockTraitsBase<boost::shared_mutex> {
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static constexpr bool is_shared = true;
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static constexpr bool is_timed = true;
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template <class Rep, class Period>
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static bool try_lock_for(
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boost::shared_mutex& mutex,
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const std::chrono::duration<Rep, Period>& timeout) {
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return mutex.try_lock_for(detail::toBoostDuration(timeout));
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}
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template <class Rep, class Period>
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static bool try_lock_shared_for(
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boost::shared_mutex& mutex,
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const std::chrono::duration<Rep, Period>& timeout) {
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return mutex.try_lock_shared_for(detail::toBoostDuration(timeout));
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}
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};
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/**
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* LockTraits specialization for boost::timed_mutex
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*/
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template <>
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struct LockTraits<boost::timed_mutex>
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: public LockTraitsBase<boost::timed_mutex> {
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static constexpr bool is_shared = false;
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static constexpr bool is_timed = true;
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template <class Rep, class Period>
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static bool try_lock_for(
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boost::timed_mutex& mutex,
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const std::chrono::duration<Rep, Period>& timeout) {
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return mutex.try_lock_for(detail::toBoostDuration(timeout));
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}
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};
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/**
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* LockTraits specialization for boost::recursive_timed_mutex
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*/
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template <>
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struct LockTraits<boost::recursive_timed_mutex>
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: public LockTraitsBase<boost::recursive_timed_mutex> {
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static constexpr bool is_shared = false;
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static constexpr bool is_timed = true;
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template <class Rep, class Period>
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static bool try_lock_for(
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boost::recursive_timed_mutex& mutex,
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const std::chrono::duration<Rep, Period>& timeout) {
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return mutex.try_lock_for(detail::toBoostDuration(timeout));
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}
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};
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} // namespace folly
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#endif // FOLLY_LOCK_TRAITS_HAVE_TIMED_MUTEXES
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