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