e28faafba4
Change-Id: I222ea673a44528cb04847a912cd8da971bb1be3d Reviewed-on: https://gerrit.libreoffice.org/c/core/+/97542 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
103 lines
2.4 KiB
C++
103 lines
2.4 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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#include <sal/config.h>
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#include <comphelper/solarmutex.hxx>
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#include <osl/thread.hxx>
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#include <assert.h>
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#include <cstdlib>
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namespace comphelper {
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namespace {
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SolarMutex* g_pSolarMutex = nullptr;
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}
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SolarMutex *SolarMutex::get()
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{
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return g_pSolarMutex;
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}
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SolarMutex::SolarMutex()
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: m_nCount( 0 )
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, m_nThreadId( 0 )
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, m_aBeforeReleaseHandler( nullptr )
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{
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assert(!g_pSolarMutex);
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g_pSolarMutex = this;
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}
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SolarMutex::~SolarMutex()
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{
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g_pSolarMutex = nullptr;
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}
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void SolarMutex::doAcquire( const sal_uInt32 nLockCount )
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{
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for ( sal_uInt32 n = nLockCount; n ; --n )
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m_aMutex.acquire();
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m_nThreadId = osl::Thread::getCurrentIdentifier();
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m_nCount += nLockCount;
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}
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sal_uInt32 SolarMutex::doRelease( bool bUnlockAll )
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{
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if ( !IsCurrentThread() )
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std::abort();
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if ( m_nCount == 0 )
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std::abort();
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const sal_uInt32 nCount = bUnlockAll ? m_nCount : 1;
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m_nCount -= nCount;
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if ( 0 == m_nCount )
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{
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if ( m_aBeforeReleaseHandler )
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m_aBeforeReleaseHandler();
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m_nThreadId = 0;
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}
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for ( sal_uInt32 n = nCount ; n ; --n )
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m_aMutex.release();
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return nCount;
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}
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bool SolarMutex::IsCurrentThread() const
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{
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return m_nThreadId == osl::Thread::getCurrentIdentifier();
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}
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bool SolarMutex::tryToAcquire()
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{
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if ( m_aMutex.tryToAcquire() )
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{
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m_nThreadId = osl::Thread::getCurrentIdentifier();
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m_nCount++;
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return true;
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}
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else
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return false;
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}
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} // namespace comphelper
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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