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60 lines
2.0 KiB
60 lines
2.0 KiB
15 years ago
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/* -*- C++ -*-
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This file declares the Weaver Extensions basics.
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$ Author: Mirko Boehm $
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$ Copyright: (C) 2004, Mirko Boehm $
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$ Contact: mirko@kde.org
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http://www.kde.org
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http://www.hackerbuero.org $
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$ License: LGPL with the following explicit clarification:
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This code may be linked against any version of the Qt toolkit
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from Troll Tech, Norway. $
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*/
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#ifndef WEAVEREXTENSIONS_H
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#define WEAVEREXTENSIONS_H
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#include <qobject.h>
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namespace KPIM {
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namespace ThreadWeaver {
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class Weaver;
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class Thread;
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/** A WeaverExtension can be attached to an existing Weaver object and
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will then receive signals on actions the Weaver takes, like starting
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to process a specific job, assigning a job to a thread or suspending a
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thread. It can be used to monitor the state of a program, but also,
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for example, to provide visualization of the Weaver's work load in GUI
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programs. Derive from it to actually create an extension. */
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class WeaverExtension : public QObject
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{
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Q_OBJECT
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public:
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WeaverExtension ( QObject *parent = 0, const char *name = 0);
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/** Attach() is a convenience method that will connect all our
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slots to signals emitted by the weaver. It is also possible to
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avoid attach() and only connect necessary signals. */
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void attach (Weaver *);
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virtual ~WeaverExtension() = 0;
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public slots:
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// these methods are implemented, but do nothing in the default configuration
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// a thread is created:
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virtual void threadCreated (Thread *);
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// a thread is destroyed:
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virtual void threadDestroyed (Thread *);
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// the thread is processing a job
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virtual void threadBusy (Thread *);
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// the thread is suspended and will be waked when jobs become
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// available
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virtual void threadSuspended (Thread *);
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};
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} // namespace ThreadWeaver
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}
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#endif // WEAVEREXTENSIONS_H
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