forked from amazingfate/loongoffice
02d65d7a19
Change-Id: I7056dc36b68021bdf16cc6c496645a2797958ab8 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/105660 Tested-by: Jenkins Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>
84 lines
2.8 KiB
C++
84 lines
2.8 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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#include <dbaccess/AsynchronousLink.hxx>
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#include <vcl/svapp.hxx>
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// OAsynchronousLink
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using namespace dbaui;
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OAsynchronousLink::OAsynchronousLink(const Link<void*, void>& _rHandler)
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: m_aHandler(_rHandler)
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, m_aEventSafety()
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, m_aDestructionSafety()
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, m_nEventId(nullptr)
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{
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}
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OAsynchronousLink::~OAsynchronousLink()
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{
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{
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::osl::MutexGuard aEventGuard(m_aEventSafety);
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if (m_nEventId)
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Application::RemoveUserEvent(m_nEventId);
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m_nEventId = nullptr;
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}
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{
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::osl::MutexGuard aDestructionGuard(m_aDestructionSafety);
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// this is just for the case we're deleted while another thread just handled the event :
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// if this other thread called our link while we were deleting the event here, the
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// link handler blocked. With leaving the above block it continued, but now we are prevented
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// to leave this destructor 'til the link handler recognizes that nEvent == 0 and leaves.
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}
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}
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void OAsynchronousLink::Call(void* _pArgument)
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{
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::osl::MutexGuard aEventGuard(m_aEventSafety);
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if (m_nEventId)
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Application::RemoveUserEvent(m_nEventId);
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m_nEventId = Application::PostUserEvent(LINK(this, OAsynchronousLink, OnAsyncCall), _pArgument);
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}
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void OAsynchronousLink::CancelCall()
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{
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::osl::MutexGuard aEventGuard(m_aEventSafety);
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if (m_nEventId)
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Application::RemoveUserEvent(m_nEventId);
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m_nEventId = nullptr;
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}
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IMPL_LINK(OAsynchronousLink, OnAsyncCall, void*, _pArg, void)
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{
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{
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::osl::MutexGuard aDestructionGuard(m_aDestructionSafety);
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{
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::osl::MutexGuard aEventGuard(m_aEventSafety);
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if (!m_nEventId)
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// our destructor deleted the event just while we are waiting for m_aEventSafety
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// -> get outta here
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return;
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m_nEventId = nullptr;
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}
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}
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m_aHandler.Call(_pArg);
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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