Robin E.R. Davies
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
/*
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* Copyright (c) Robin E.R. Davies
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* All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#pragma once
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#include <vector>
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#include <chrono>
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#include <mutex>
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namespace pipedal
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{
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class Tone3000Throttler
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{
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private:
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Tone3000Throttler() = default;
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Tone3000Throttler(const Tone3000Throttler&) = delete;
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Tone3000Throttler(Tone3000Throttler&&) = delete;
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Tone3000Throttler&operator=(const Tone3000Throttler&) = delete;
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public:
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static Tone3000Throttler&instance() { return instance_; }
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using clock_t = std::chrono::steady_clock;
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void AddDownload();
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size_t ReserveDownloadSlots(size_t requested);
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size_t AvailableDownloadSlots();
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bool IsThrottled();
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private:
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std::mutex m_mutex;
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static Tone3000Throttler instance_;
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void ClearExpiredDownloads_();
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std::vector<clock_t::time_point> downloadTimes;
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};
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} |