4a19260d74
Change-Id: I53809ab01d5e8eb091305c3cb618a64920ad22ad Reviewed-on: https://gerrit.libreoffice.org/82783 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
94 lines
2.6 KiB
C++
94 lines
2.6 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_FRAMEWORK_INC_HELPER_SHAREABLEMUTEX_HXX
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#define INCLUDED_FRAMEWORK_INC_HELPER_SHAREABLEMUTEX_HXX
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#include <osl/interlck.h>
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#include <osl/mutex.hxx>
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#include <fwidllapi.h>
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namespace framework
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{
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/**
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* This acts like a rtl::Reference<osl::Mutex>
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*/
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class ShareableMutex
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{
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public:
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ShareableMutex();
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ShareableMutex( const ShareableMutex& rShareableMutex );
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ShareableMutex& operator=( const ShareableMutex& rShareableMutex );
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~ShareableMutex() { m_pMutexRef->release(); }
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/** acquire the shared mutex */
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void acquire();
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/** release the shared mutex */
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void release();
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private:
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/* ShareableMutex::MutexRef will destroy itself when the last ShareableMutex pointing to it is destroyed */
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struct MutexRef
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{
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MutexRef() : m_refCount(0) {}
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void acquire()
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{
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osl_atomic_increment( &m_refCount );
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}
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void release()
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{
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if ( osl_atomic_decrement( &m_refCount ) == 0 )
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delete this;
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}
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oslInterlockedCount m_refCount;
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osl::Mutex m_oslMutex;
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};
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MutexRef* m_pMutexRef;
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};
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class ShareGuard
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{
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public:
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explicit ShareGuard( ShareableMutex& rShareMutex ) :
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m_rShareMutex( rShareMutex )
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{
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m_rShareMutex.acquire();
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}
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~ShareGuard()
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{
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m_rShareMutex.release();
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}
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private:
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ShareGuard& operator=( const ShareGuard& ) = delete;
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ShareableMutex& m_rShareMutex;
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};
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}
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#endif // INCLUDED_FRAMEWORK_INC_HELPER_SHAREABLEMUTEX_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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