174 lines
4.8 KiB
C++
174 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include "tools/TimerBasedTaskExecution.hxx"
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#include "tools/AsynchronousTask.hxx"
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#include <tools/time.hxx>
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#include <osl/diagnose.h>
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#include <boost/weak_ptr.hpp>
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#include "sal/log.hxx"
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namespace sd { namespace tools {
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/** Used by the shared_ptr instead of the private destructor.
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*/
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class TimerBasedTaskExecution::Deleter
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{
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public:
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void operator() (TimerBasedTaskExecution* pObject)
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{
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delete pObject;
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}
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};
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::boost::shared_ptr<TimerBasedTaskExecution> TimerBasedTaskExecution::Create (
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const ::boost::shared_ptr<AsynchronousTask>& rpTask,
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sal_uInt32 nMillisecondsBetweenSteps,
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sal_uInt32 nMaxTimePerStep)
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{
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::boost::shared_ptr<TimerBasedTaskExecution> pExecution(
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new TimerBasedTaskExecution(rpTask,nMillisecondsBetweenSteps,nMaxTimePerStep),
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Deleter());
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// Let the new object have a shared_ptr to itself, so that it can
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// release itself when the AsynchronousTask has been executed
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// completely.
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pExecution->SetSelf(pExecution);
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return pExecution;
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}
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void TimerBasedTaskExecution::Release (void)
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{
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maTimer.Stop();
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mpSelf.reset();
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}
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//static
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void TimerBasedTaskExecution::ReleaseTask (
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const ::boost::weak_ptr<TimerBasedTaskExecution>& rpExecution)
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{
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if ( ! rpExecution.expired())
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{
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try
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{
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::boost::shared_ptr<tools::TimerBasedTaskExecution> pExecution (rpExecution);
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pExecution->Release();
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}
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catch (const ::boost::bad_weak_ptr&)
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{
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// When a bad_weak_ptr has been thrown then the object pointed
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// to by rpTask has been released right after we checked that it
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// still existed. Too bad, but that means, that we have nothing
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// more do.
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}
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}
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}
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TimerBasedTaskExecution::TimerBasedTaskExecution (
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const ::boost::shared_ptr<AsynchronousTask>& rpTask,
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sal_uInt32 nMillisecondsBetweenSteps,
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sal_uInt32 nMaxTimePerStep)
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: mpTask(rpTask),
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maTimer(),
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mpSelf(),
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mnMaxTimePerStep(nMaxTimePerStep)
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{
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Link aLink(LINK(this,TimerBasedTaskExecution,TimerCallback));
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maTimer.SetTimeoutHdl(aLink);
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maTimer.SetTimeout(nMillisecondsBetweenSteps);
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maTimer.Start();
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}
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TimerBasedTaskExecution::~TimerBasedTaskExecution (void)
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{
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maTimer.Stop();
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}
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void TimerBasedTaskExecution::SetSelf (
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const ::boost::shared_ptr<TimerBasedTaskExecution>& rpSelf)
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{
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if (mpTask.get() != NULL)
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mpSelf = rpSelf;
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}
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IMPL_LINK_NOARG(TimerBasedTaskExecution, TimerCallback)
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{
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if (mpTask.get() != NULL)
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{
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if (mpTask->HasNextStep())
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{
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// Execute as many steps as fit into the time span of length
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// mnMaxTimePerStep. Note that the last step may take longer
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// than allowed.
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sal_uInt32 nStartTime (Time( Time::SYSTEM ).GetMSFromTime());
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SAL_INFO("sd.tools", OSL_THIS_FUNC << ": starting TimerBasedTaskExecution at " << nStartTime);
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do
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{
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mpTask->RunNextStep();
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sal_uInt32 nDuration (Time( Time::SYSTEM ).GetMSFromTime()-nStartTime);
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SAL_INFO("sd.tools", OSL_THIS_FUNC << ": executed step in " << nDuration);
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if (nDuration > mnMaxTimePerStep)
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break;
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}
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while (mpTask->HasNextStep());
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SAL_INFO("sd.tools", OSL_THIS_FUNC << ": TimerBasedTaskExecution sleeping");
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maTimer.Start();
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}
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else
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mpSelf.reset();
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}
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return 0;
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}
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} } // end of namespace ::sd::tools
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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