qthreadpool.h

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00002 **
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00006 **
00007 ** This file is part of the QtCore module of the Qt Toolkit.
00008 **
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00016 ** GNU Lesser General Public License Usage
00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
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00028 ** GNU General Public License Usage
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00041 
00042 #ifndef QTHREADPOOL_H
00043 #define QTHREADPOOL_H
00044 
00045 #include <QtCore/qglobal.h>
00046 
00047 #include <QtCore/qthread.h>
00048 #include <QtCore/qrunnable.h>
00049 
00050 #ifndef QT_NO_THREAD
00051 
00052 QT_BEGIN_HEADER
00053 QT_BEGIN_NAMESPACE
00054 
00055 QT_MODULE(Core)
00056 
00057 class QThreadPoolPrivate;
00058 class Q_CORE_EXPORT QThreadPool : public QObject
00059 {
00060     Q_OBJECT
00061     Q_DECLARE_PRIVATE(QThreadPool)
00062     Q_PROPERTY(int expiryTimeout READ expiryTimeout WRITE setExpiryTimeout)
00063     Q_PROPERTY(int maxThreadCount READ maxThreadCount WRITE setMaxThreadCount)
00064     Q_PROPERTY(int activeThreadCount READ activeThreadCount)
00065     friend class QFutureInterfaceBase;
00066 
00067 public:
00068     QThreadPool(QObject *parent = 0);
00069     ~QThreadPool();
00070 
00071     static QThreadPool *globalInstance();
00072 
00073     void start(QRunnable *runnable, int priority = 0);
00074     bool tryStart(QRunnable *runnable);
00075 
00076     int expiryTimeout() const;
00077     void setExpiryTimeout(int expiryTimeout);
00078 
00079     int maxThreadCount() const;
00080     void setMaxThreadCount(int maxThreadCount);
00081 
00082     int activeThreadCount() const;
00083 
00084     void reserveThread();
00085     void releaseThread();
00086 
00087     void waitForDone();
00088 };
00089 
00090 QT_END_NAMESPACE
00091 QT_END_HEADER
00092 
00093 #endif // QT_NO_THREAD
00094 
00095 #endif