5b2cd79ade
create a plugin that finds methods we can mark as final because they are not override in subclasses. Which is useful both as documentation (telling you that you don't need to worry about subclasses changing the implementation under you), and for performance, letting the compiler elide virtual calls in many cases. Apply the results to a subset of stuff in /include Change-Id: I7b5cc893ec2f343bc356bfc338e4cf531ffba1e0 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/165054 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
139 lines
5.8 KiB
C++
139 lines
5.8 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_COMPHELPER_SEQSTREAM_HXX
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#define INCLUDED_COMPHELPER_SEQSTREAM_HXX
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#include <config_options.h>
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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/io/XOutputStream.hpp>
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#include <com/sun/star/io/XSeekable.hpp>
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#include <cppuhelper/implbase.hxx>
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#include <comphelper/comphelperdllapi.h>
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#include <comphelper/bytereader.hxx>
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#include <mutex>
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namespace comphelper
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{
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/** Base class for wrappers around memory data that want to be exposed as an XInputStream */
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class COMPHELPER_DLLPUBLIC MemoryInputStream
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: public ::cppu::WeakImplHelper< css::io::XInputStream, css::io::XSeekable >,
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public comphelper::ByteReader
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{
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std::mutex m_aMutex;
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const sal_Int8* m_pMemoryData;
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sal_Int32 m_nMemoryDataLength;
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sal_Int32 m_nPos;
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public:
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MemoryInputStream(const sal_Int8* pData, sal_Int32 nDataLength);
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// css::io::XInputStream
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virtual sal_Int32 SAL_CALL readBytes( css::uno::Sequence<sal_Int8>& aData, sal_Int32 nBytesToRead ) override final;
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virtual sal_Int32 SAL_CALL readSomeBytes( css::uno::Sequence<sal_Int8>& aData, sal_Int32 nMaxBytesToRead ) override final;
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virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) override final;
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virtual sal_Int32 SAL_CALL available( ) override final;
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virtual void SAL_CALL closeInput( ) override final;
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virtual void SAL_CALL seek( sal_Int64 location ) override final;
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virtual sal_Int64 SAL_CALL getPosition( ) override final;
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virtual sal_Int64 SAL_CALL getLength( ) override final;
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// comphelper::ByteReader
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virtual sal_Int32 readSomeBytes( sal_Int8* pData, sal_Int32 nBytesToRead ) override final;
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private:
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sal_Int32 avail();
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};
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// Stream for reading data from a sequence of bytes
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class COMPHELPER_DLLPUBLIC SequenceInputStream final
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: public MemoryInputStream
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{
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css::uno::Sequence<sal_Int8> const m_aData;
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public:
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SequenceInputStream(css::uno::Sequence<sal_Int8> const & rData);
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};
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// don't export to avoid duplicate WeakImplHelper definitions with MSVC
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class SAL_DLLPUBLIC_TEMPLATE OSequenceOutputStream_Base
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: public ::cppu::WeakImplHelper< css::io::XOutputStream >
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{};
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class UNLESS_MERGELIBS(COMPHELPER_DLLPUBLIC) OSequenceOutputStream final : public OSequenceOutputStream_Base
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{
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private:
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css::uno::Sequence< sal_Int8 >& m_rSequence;
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double m_nResizeFactor;
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sal_Int32 const m_nMinimumResize;
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sal_Int32 m_nSize;
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// the size of the virtual stream. This is not the size of the sequence, but the number of bytes written
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// into the stream at a given moment.
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bool m_bConnected;
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// closeOutput has been called ?
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std::mutex m_aMutex;
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void finalizeOutput();
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virtual ~OSequenceOutputStream() override { if (m_bConnected) finalizeOutput(); }
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public:
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/** constructs the object. Everything written into the stream through the XOutputStream methods will be forwarded
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to the sequence, reallocating it if necessary. Writing will start at offset 0 within the sequence.
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@param _rSeq a reference to the sequence which will be used for output.
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The caller is responsible for taking care of the lifetime of the stream
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object and the sequence. If you're in doubt about this, use <code>closeOutput</code>
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before destroying the sequence
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@param _nResizeFactor the factor which is used for resizing the sequence when necessary. In every
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resize step, the new sequence size will be calculated by multiplying the current
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size with this factor, rounded off to the next multiple of 4.
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@param _nMinimumResize the minimal number of bytes which is additionally allocated on resizing
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@see closeOutput
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*/
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OSequenceOutputStream(
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css::uno::Sequence< sal_Int8 >& _rSeq,
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double _nResizeFactor = 1.3,
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sal_Int32 _nMinimumResize = 128
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);
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/// same as XOutputStream::writeBytes (as expected :)
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virtual void SAL_CALL writeBytes( const css::uno::Sequence< sal_Int8 >& aData ) override;
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/// this is a dummy in this implementation, no buffering is used
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virtual void SAL_CALL flush( ) override;
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/** closes the output stream. In the case of this class, this means that the sequence used for writing is
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resized to the really used size and not used any further, every subsequent call to one of the XOutputStream
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methods will throw a <code>NotConnectedException</code>.
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*/
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virtual void SAL_CALL closeOutput( ) override;
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};
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} // namespace comphelper
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#endif // INCLUDED_COMPHELPER_SEQSTREAM_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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