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