6ef28599b2
and cid#1545605 COPY_INSTEAD_OF_MOVE cid#1545587 COPY_INSTEAD_OF_MOVE Change-Id: Iafb1d81dbacfefe70fbddd84b29e827dc137ef07 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/161077 Tested-by: Jenkins Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_PACKAGE_THREADEDDEFLATER_HXX
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#define INCLUDED_PACKAGE_THREADEDDEFLATER_HXX
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#include <com/sun/star/uno/Sequence.hxx>
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#include <com/sun/star/io/XInputStream.hpp>
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#include <com/sun/star/uno/Reference.hxx>
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#include <comphelper/threadpool.hxx>
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#include <memory>
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#include <vector>
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#include <functional>
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namespace ZipUtils
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{
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/// Parallel compression a stream using the libz deflate algorithm.
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///
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/// Call deflateWrite() with the input stream and input/output processing functions.
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/// This will use multiple threads for compression on each batch of data from the stream.
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class ThreadedDeflater final
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{
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class Task;
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// Note: All this should be lock-less. Each task writes only to its part
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// of the data.
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std::vector<std::vector<sal_Int8>> outBuffers;
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std::shared_ptr<comphelper::ThreadTaskTag> threadTaskTag;
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css::uno::Sequence<sal_Int8> inBuffer;
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css::uno::Sequence<sal_Int8> prevDataBlock;
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std::function<void(const css::uno::Sequence<sal_Int8>&, sal_Int32)> maProcessOutputFunc;
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sal_Int64 totalIn;
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sal_Int64 totalOut;
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int zlibLevel;
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public:
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// Unlike with Deflater class, bNoWrap is always true.
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ThreadedDeflater(sal_Int32 nSetLevel);
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~ThreadedDeflater() COVERITY_NOEXCEPT_FALSE;
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void deflateWrite(const css::uno::Reference<css::io::XInputStream>& xInStream,
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const std::function<void(const css::uno::Sequence<sal_Int8>&, sal_Int32)>&
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rProcessInputFunc,
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const std::function<void(const css::uno::Sequence<sal_Int8>&, sal_Int32)>&
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rProcessOutputFunc);
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sal_Int64 getTotalIn() const { return totalIn; }
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sal_Int64 getTotalOut() const { return totalOut; }
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private:
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void processDeflatedBuffers();
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void clear();
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};
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} // namespace
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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