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ThreadWeaver

WeaverInterface.h

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00001 /* -*- C++ -*-
00002 
00003    This file declares the WeaverInterface class.
00004 
00005    $ Author: Mirko Boehm $
00006    $ Copyright: (C) 2005, 2006 Mirko Boehm $
00007    $ Contact: mirko@kde.org
00008          http://www.kde.org
00009          http://www.hackerbuero.org $
00010 
00011    This library is free software; you can redistribute it and/or
00012    modify it under the terms of the GNU Library General Public
00013    License as published by the Free Software Foundation; either
00014    version 2 of the License, or (at your option) any later version.
00015 
00016    This library is distributed in the hope that it will be useful,
00017    but WITHOUT ANY WARRANTY; without even the implied warranty of
00018    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019    Library General Public License for more details.
00020 
00021    You should have received a copy of the GNU Library General Public License
00022    along with this library; see the file COPYING.LIB.  If not, write to
00023    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00024    Boston, MA 02110-1301, USA.
00025 
00026    $Id: WeaverImpl.h 29 2005-08-14 19:04:30Z mirko $
00027 */
00028 
00029 #ifndef WeaverInterface_H
00030 #define WeaverInterface_H
00031 
00032 #include <QtCore/QObject>
00033 
00034 #include <threadweaver/threadweaver_export.h>
00035 
00036 namespace ThreadWeaver {
00037 
00038     class Job;
00039     class State;
00040     class WeaverObserver;
00041 
00061     class THREADWEAVER_EXPORT WeaverInterface : public QObject {
00062         Q_OBJECT
00063 
00064     public:
00068         explicit WeaverInterface ( QObject* parent = 0 );
00069         virtual ~WeaverInterface() {}
00071         virtual const State& state() const = 0;
00072 
00074       virtual void setMaximumNumberOfThreads( int cap ) = 0;
00075 
00077       virtual int maximumNumberOfThreads() const = 0;
00078 
00080       virtual int currentNumberOfThreads () const = 0;
00081 
00092         virtual void registerObserver ( WeaverObserver* ) = 0;
00101         virtual void enqueue ( Job* ) = 0;
00111         virtual bool dequeue ( Job* ) = 0;
00115         virtual void dequeue () = 0;
00126         virtual void finish () = 0;
00136         virtual void suspend () = 0;
00140         virtual void resume () = 0;
00143         virtual bool isEmpty () const = 0;
00147         virtual bool isIdle () const = 0;
00153         virtual int queueLength () const = 0;
00154 
00160         virtual void requestAbort() = 0;
00161 
00162     Q_SIGNALS:
00169         void finished ();
00170 
00175         void suspended ();
00176 
00182         void jobDone ( ThreadWeaver::Job* );
00183         // FIXME (0.7) test if signal is emitted properly
00184         // FIXME (0.7) provide jobStarted and jobFailed signals
00185         // FIXME (0.7) or remove all these, and add them to WeaverObserver
00186 
00188         void stateChanged ( ThreadWeaver::State* );
00189     };
00190 
00191 }
00192 
00193 #endif

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