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ThreadWeaver

JobCollection.h

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00001 /* -*- C++ -*-
00002 
00003    This file declares the JobCollection class.
00004 
00005    $ Author: Mirko Boehm $
00006    $ Copyright: (C) 2004, 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: DebuggingAids.h 30 2005-08-16 16:16:04Z mirko $
00027 */
00028 
00029 #ifndef JOBCOLLECTION_H
00030 #define JOBCOLLECTION_H
00031 
00032 #include "Job.h"
00033 
00034 namespace ThreadWeaver {
00035 
00036     class Thread;
00037     class JobCollectionJobRunner;
00038 
00049     class THREADWEAVER_EXPORT JobCollection : public Job
00050     {
00051         friend class JobCollectionJobRunner;
00052         Q_OBJECT
00053 
00054     public:
00055         explicit JobCollection ( QObject *parent = 0 );
00056         ~JobCollection ();
00063         virtual void addJob ( Job* );
00064 
00066         bool canBeExecuted();
00067 
00068     public Q_SLOTS:
00072         void stop ( ThreadWeaver::Job *job );
00073 
00074     protected:
00076         void aboutToBeQueued ( WeaverInterface *weaver );
00077 
00079         void aboutToBeDequeued ( WeaverInterface *weaver );
00080 
00082         Job* jobAt( int i );
00083 
00084 #ifdef __GNUC__
00085 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 1)
00086 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
00087 #endif
00088 #endif
00089 
00090         const int jobListLength(); // const qualifier is possibly BiC?
00091 
00094         virtual void internalJobDone( Job* );
00095 
00101         void finalCleanup();
00102 
00103     private Q_SLOTS:
00104         // called when an internal job runner emits its done(Job*) signal.
00105         // JobCollection emits done(Job*) after the last JobCollectionJobRunner finishes
00106         void jobRunnerDone();
00107 
00108     private:
00110         void execute ( Thread * );
00111 
00114         void run() {}
00115 
00119         void dequeueElements();
00120 
00121       class Private;
00122       Private * const d;
00123 
00124     };
00125 
00126 }
00127 
00128 #endif

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