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0c44027cb9
Do not start new thread if the thread has been already started. Restart the thread after the previous has finished.
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
// Created on: 2017-06-16
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// Created by: Natalia ERMOLAEVA
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// Copyright (c) 2017 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef DFBrowser_Thread_H
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#define DFBrowser_Thread_H
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#include <Standard.hxx>
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#include <Standard_WarningsDisable.hxx>
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#include <QList>
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#include <QObject>
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#include <Standard_WarningsRestore.hxx>
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class DFBrowser_Module;
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class DFBrowser_ThreadItem;
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class DFBrowser_Window;
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class QThread;
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//! /class DFBrowser_Thread
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//! Starts algorithm item in a separate thread and perform some functionality by the algorithm(thread) is finished
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class DFBrowser_Thread : public QObject
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{
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Q_OBJECT
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public:
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//! Constructor
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Standard_EXPORT DFBrowser_Thread (DFBrowser_Window* theWindow);
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//! Destructor
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virtual ~DFBrowser_Thread() {}
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//! Starts all candidate thread items
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Standard_EXPORT void ProcessApplication();
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//! Terminates all started threads.
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Standard_EXPORT void TerminateThread();
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protected:
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//! Creates new Qt thread and starts the item. Connects to finished signal of thread.
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//! \param theItem a thread item
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void startThread (DFBrowser_ThreadItem* theItem);
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protected slots:
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//! Removes finished thread from the thread items and apply values of this thread
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//! If this signal is come when another thread is processed, the current thread is stored in a cache and
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//! is processed after the previous thread is processed.
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void onFinished();
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private:
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QList<DFBrowser_ThreadItem*> myItems; //!< candidates to be processed in a thread
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QList<QThread*> myStartedThreads; //!< container of started threads
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DFBrowser_ThreadItem* myPostponedItem; //!< currently processed item in onFinished()
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bool myIsFinishProcessing; //!< blocking state if onFinished() is started but has not been finished yet
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Standard_Boolean myIsProcessPostponed; //!< state if process application should be done by finish active thread
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};
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#endif
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