112 lines
3.2 KiB
C++
112 lines
3.2 KiB
C++
/*
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* Copyright (C) 2024 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "FileScanQueue.hpp"
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#include <boost/asio/post.hpp>
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#include "core/ILogger.hpp"
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#include "core/ITraceLogger.hpp"
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#include "scanners/IFileScanOperation.hpp"
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namespace lms::scanner
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{
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FileScanQueue::FileScanQueue(std::size_t threadCount, bool& abort)
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: _scanContextRunner{ _scanIoContext, threadCount, "FileScan" }
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, _abort{ abort }
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{
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}
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FileScanQueue::~FileScanQueue() = default;
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void FileScanQueue::pushScanRequest(std::unique_ptr<IFileScanOperation> operation)
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{
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{
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std::scoped_lock lock{ _mutex };
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_ongoingScanCount += 1;
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}
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auto operationHandler{ [operation = std::move(operation), this]() mutable {
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if (_abort)
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{
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std::scoped_lock lock{ _mutex };
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_ongoingScanCount -= 1;
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}
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else
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{
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{
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LMS_SCOPED_TRACE_OVERVIEW("Scanner", operation->getName());
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LMS_LOG(DBUPDATER, DEBUG, operation->getName() << ": scanning file " << operation->getFile());
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operation->scan();
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}
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{
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std::scoped_lock lock{ _mutex };
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_scanResults.emplace_back(std::move(operation));
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_ongoingScanCount -= 1;
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}
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}
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_condVar.notify_all();
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} };
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boost::asio::post(_scanIoContext, std::move(operationHandler));
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}
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std::size_t FileScanQueue::getResultsCount() const
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{
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std::scoped_lock lock{ _mutex };
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return _scanResults.size();
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}
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size_t FileScanQueue::popResults(std::vector<std::unique_ptr<IFileScanOperation>>& results, std::size_t maxCount)
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{
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results.clear();
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results.reserve(maxCount);
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{
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std::scoped_lock lock{ _mutex };
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while (results.size() < maxCount && !_scanResults.empty())
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{
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results.push_back(std::move(_scanResults.front()));
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_scanResults.pop_front();
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}
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}
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return results.size();
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}
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void FileScanQueue::wait(std::size_t maxScanRequestCount)
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{
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if (_ongoingScanCount <= maxScanRequestCount)
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return;
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{
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LMS_SCOPED_TRACE_OVERVIEW("Scanner", "WaitParseResults");
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std::unique_lock lock{ _mutex };
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_condVar.wait(lock, [=, this] { return _ongoingScanCount <= maxScanRequestCount; });
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}
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}
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} // namespace lms::scanner
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