56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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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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#include <folly/futures/ManualTimekeeper.h>
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namespace folly {
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ManualTimekeeper::ManualTimekeeper() : now_{std::chrono::steady_clock::now()} {}
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SemiFuture<Unit> ManualTimekeeper::after(HighResDuration dur) {
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auto contract = folly::makePromiseContract<Unit>();
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if (dur.count() == 0) {
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contract.first.setValue(folly::unit);
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} else {
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schedule_.withWLock([&contract, this, &dur](auto& schedule) {
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schedule.insert(std::make_pair(now_ + dur, std::move(contract.first)));
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});
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}
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return std::move(contract.second);
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}
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void ManualTimekeeper::advance(Duration dur) {
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now_ += dur;
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schedule_.withWLock([this](auto& schedule) {
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auto start = schedule.begin();
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auto end = schedule.upper_bound(now_);
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for (auto iter = start; iter != end; iter++) {
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iter->second.setValue(folly::unit);
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}
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schedule.erase(start, end);
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});
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}
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std::chrono::steady_clock::time_point ManualTimekeeper::now() const {
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return now_;
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}
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std::size_t ManualTimekeeper::numScheduled() const {
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return schedule_.withRLock([](const auto& sched) { return sched.size(); });
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}
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} // namespace folly
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