office-gobmx/include/unotools/streamhelper.hxx
Jan-Marek Glogowski c820cb429f Help older linkers (Ubuntu 18.04, Fedora 31)
Fixes a regression from commit 429e6e6efb
("osl::Mutex->std::mutex in OInputStreamHelper"), which results in
failed linking with some older toolchains:

/usr/bin/ld.gold: error: workdir/CxxObject/xmlsecurity/source/helper/UriBindingHelper.o:
  requires dynamic R_X86_64_PC32 reloc against '_ZThn40_N3utl18OInputStreamHelper7acquireEv'
  which may overflow at runtime; recompile with -fPIC
include/com/sun/star/uno/Reference.hxx:240: error: undefined reference to
  'non-virtual thunk to utl::OInputStreamHelper::acquire()'
collect2: error: ld returned 1 exit status
xmlsecurity/Library_xmlsecurity.mk:10: recipe for target
  'symbols/instdir/program/libxmlsecurity.so' failed

Known problematic setups are my Ubuntu 18.04 build schroot and
Caolán's Fedora 31 VM to run Coverity.

Change-Id: I40f0734a0cb9131193abf21ba95dc63816b5c1d8
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120426
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
2021-08-13 20:06:47 +02:00

69 lines
2.6 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_UNOTOOLS_STREAMHELPER_HXX
#define INCLUDED_UNOTOOLS_STREAMHELPER_HXX
#include <unotools/unotoolsdllapi.h>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <cppuhelper/implbase.hxx>
#include <tools/stream.hxx>
#include <mutex>
namespace utl
{
/**
* The helper implementation for a using input streams based on SvLockBytes.
*/
class UNOTOOLS_DLLPUBLIC OInputStreamHelper final : public cppu::WeakImplHelper<css::io::XInputStream, css::io::XSeekable>
{
std::mutex m_aMutex;
SvLockBytesRef m_xLockBytes;
sal_uInt64 m_nActPos;
sal_Int32 m_nAvailable; // this is typically the chunk(buffer) size
public:
OInputStreamHelper(const SvLockBytesRef& _xLockBytes,
sal_uInt32 _nAvailable)
:m_xLockBytes(_xLockBytes)
,m_nActPos(0)
,m_nAvailable(_nAvailable){}
// css::io::XInputStream
virtual sal_Int32 SAL_CALL readBytes( css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) override;
virtual sal_Int32 SAL_CALL readSomeBytes( css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) override;
virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) override;
virtual sal_Int32 SAL_CALL available( ) override;
virtual void SAL_CALL closeInput( ) override;
virtual void SAL_CALL seek( sal_Int64 location ) override;
virtual sal_Int64 SAL_CALL getPosition( ) override;
virtual sal_Int64 SAL_CALL getLength( ) override;
// workaround for Ubuntu 18.04 / Fedora 31 (Coverity VM) build with std::mutex; must not be inline!
virtual void SAL_CALL acquire() SAL_NOEXCEPT override;
};
} // namespace utl
#endif // _UNOTOOLS_STREAM_WRAPPER_HXX_
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */