145 lines
3.4 KiB
C++
145 lines
3.4 KiB
C++
/*
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* Copyright (C) 2007, 2009 Ryan P. Bitanga <ryan.bitanga@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef PLASMA_RUNNERJOBS_P_H
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#define PLASMA_RUNNERJOBS_P_H
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#include <QHash>
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#include <QMutex>
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#include <QSet>
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#include <threadweaver/Job.h>
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#include <threadweaver/QueuePolicy.h>
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#include "abstractrunner.h"
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using ThreadWeaver::Job;
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class QTimer;
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namespace Plasma {
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// Queue policies
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// QueuePolicy that only allows a job to be executed after
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// waiting in the queue for the specified timeout
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class DelayedRunnerPolicy : public ThreadWeaver::QueuePolicy
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{
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public:
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~DelayedRunnerPolicy();
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static DelayedRunnerPolicy &instance();
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bool canRun(Job *job);
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void free(Job *job);
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void release(Job *job);
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void destructed(Job *job);
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private:
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DelayedRunnerPolicy();
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QMutex m_mutex;
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};
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// QueuePolicy that limits the instances of a particular runner
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class DefaultRunnerPolicy : public ThreadWeaver::QueuePolicy
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{
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public:
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~DefaultRunnerPolicy();
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static DefaultRunnerPolicy &instance();
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void setCap(int cap)
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{
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m_cap = cap;
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}
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int cap() const
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{
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return m_cap;
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}
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bool canRun(Job *job);
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void free(Job *job);
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void release(Job *job);
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void destructed(Job *job);
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private:
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DefaultRunnerPolicy();
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int m_cap;
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QHash<QString, int> m_runCounts;
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QMutex m_mutex;
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};
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/* ThreadWeaver work around:
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* There is no method exposed that allows us to inform
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* ThreadWeaver that a previously unavailable job is now
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* available; thus, we use an empty job to wake up the threads
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*/
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class DummyJob : public ThreadWeaver::Job
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{
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public:
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DummyJob(QObject *parent) : Job(parent) {}
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~DummyJob() {}
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private:
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void run() {}
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};
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/*
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* FindMatchesJob class
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* Class to run queries in different threads
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*/
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class FindMatchesJob : public Job
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{
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public:
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FindMatchesJob(Plasma::AbstractRunner *runner,
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Plasma::RunnerContext *context, QObject *parent = 0);
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~FindMatchesJob();
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int priority() const;
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Plasma::AbstractRunner* runner() const;
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QTimer* delayTimer() const;
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void setDelayTimer(QTimer *timer);
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protected:
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void run();
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private:
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Plasma::RunnerContext m_context;
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Plasma::AbstractRunner *m_runner;
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QTimer *m_timer;
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};
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class DelayedJobCleaner : public QObject
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{
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public:
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DelayedJobCleaner(const QSet<FindMatchesJob*> &jobs, const QSet<AbstractRunner *> &runners = QSet<AbstractRunner *>());
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~DelayedJobCleaner();
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private Q_SLOTS:
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void jobDone(ThreadWeaver::Job*);
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void checkIfFinished();
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private:
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ThreadWeaver::WeaverInterface *m_weaver;
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QSet<FindMatchesJob*> m_jobs;
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QSet<AbstractRunner *> m_runners;
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};
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}
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#endif // PLASMA_RUNNERJOBS_P_H
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