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152 lines
3.1 KiB
C++
152 lines
3.1 KiB
C++
//
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// Task.cpp
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//
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// $Id: //poco/svn/Foundation/src/Task.cpp#2 $
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//
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// Library: Foundation
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// Package: Tasks
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// Module: Tasks
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/Task.h"
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#include "Poco/TaskManager.h"
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#include "Poco/Exception.h"
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namespace Poco {
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Task::Task(const std::string& name):
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_name(name),
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_pOwner(0),
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_progress(0),
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_state(TASK_IDLE),
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_cancelEvent(false)
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{
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}
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Task::~Task()
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{
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}
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void Task::cancel()
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{
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_state = TASK_CANCELLING;
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_cancelEvent.set();
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if (_pOwner)
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_pOwner->taskCancelled(this);
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}
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void Task::reset()
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{
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_progress = 0.0;
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_state = TASK_IDLE;
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_cancelEvent.reset();
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}
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void Task::run()
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{
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TaskManager* pOwner = getOwner();
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if (pOwner)
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pOwner->taskStarted(this);
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try
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{
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_state = TASK_RUNNING;
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runTask();
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}
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catch (Exception& exc)
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{
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if (pOwner)
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pOwner->taskFailed(this, exc);
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}
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catch (std::exception& exc)
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{
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if (pOwner)
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pOwner->taskFailed(this, SystemException(exc.what()));
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}
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catch (...)
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{
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if (pOwner)
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pOwner->taskFailed(this, SystemException("unknown exception"));
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}
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_state = TASK_FINISHED;
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if (pOwner)
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pOwner->taskFinished(this);
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}
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bool Task::sleep(long milliseconds)
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{
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return _cancelEvent.tryWait(milliseconds);
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}
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void Task::setProgress(float progress)
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{
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FastMutex::ScopedLock lock(_mutex);
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_progress = progress;
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if (_pOwner)
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_pOwner->taskProgress(this, _progress);
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}
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void Task::setOwner(TaskManager* pOwner)
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{
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FastMutex::ScopedLock lock(_mutex);
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_pOwner = pOwner;
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}
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void Task::setState(TaskState state)
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{
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_state = state;
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}
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void Task::postNotification(Notification* pNf)
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{
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poco_check_ptr (pNf);
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FastMutex::ScopedLock lock(_mutex);
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if (_pOwner)
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{
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_pOwner->postNotification(pNf);
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}
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}
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} // namespace Poco
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