You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
257 lines
8.1 KiB
257 lines
8.1 KiB
/**
|
|
* Copyright (c) 2004 David Faure <faure@kde.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License
|
|
*
|
|
* 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 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.
|
|
*
|
|
* In addition, as a special exception, the copyright holders give
|
|
* permission to link the code of this program with any edition of
|
|
* the Qt library by Trolltech AS, Norway (or with modified versions
|
|
* of Qt that use the same license as Qt), and distribute linked
|
|
* combinations including the two. You must obey the GNU General
|
|
* Public License in all respects for all of the code used other than
|
|
* Qt. If you modify this file, you may extend this exception to
|
|
* your version of the file, but you are not obligated to do so. If
|
|
* you do not wish to do so, delete this exception statement from
|
|
* your version.
|
|
*/
|
|
|
|
#include "jobscheduler.h"
|
|
#include "kmfolder.h"
|
|
#include "folderstorage.h"
|
|
#include "kmfoldermgr.h"
|
|
#include <kdebug.h>
|
|
|
|
using namespace KMail;
|
|
|
|
JobScheduler::JobScheduler( QObject* parent, const char* name )
|
|
: QObject( parent, name ), mTimer( this, "mTimer" ),
|
|
mPendingImmediateTasks( 0 ),
|
|
mCurrentTask( 0 ), mCurrentJob( 0 )
|
|
{
|
|
connect( &mTimer, SIGNAL( timeout() ), SLOT( slotRunNextJob() ) );
|
|
// No need to start the internal timer yet, we wait for a task to be scheduled
|
|
}
|
|
|
|
|
|
JobScheduler::~JobScheduler()
|
|
{
|
|
// delete tasks in tasklist (no autodelete for QValueList)
|
|
for( TaskList::Iterator it = mTaskList.begin(); it != mTaskList.end(); ++it ) {
|
|
delete (*it);
|
|
}
|
|
delete mCurrentTask;
|
|
delete mCurrentJob;
|
|
}
|
|
|
|
void JobScheduler::registerTask( ScheduledTask* task )
|
|
{
|
|
bool immediate = task->isImmediate();
|
|
int typeId = task->taskTypeId();
|
|
if ( typeId ) {
|
|
KMFolder* folder = task->folder();
|
|
// Search for an identical task already scheduled
|
|
for( TaskList::Iterator it = mTaskList.begin(); it != mTaskList.end(); ++it ) {
|
|
if ( (*it)->taskTypeId() == typeId && (*it)->folder() == folder ) {
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << "JobScheduler: already having task type " << typeId << " for folder " << folder->label() << endl;
|
|
#endif
|
|
delete task;
|
|
if ( !mCurrentTask && immediate ) {
|
|
ScheduledTask* task = *it;
|
|
removeTask( it );
|
|
runTaskNow( task );
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
// Note that scheduling an identical task as the one currently running is allowed.
|
|
}
|
|
if ( !mCurrentTask && immediate )
|
|
runTaskNow( task );
|
|
else {
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << "JobScheduler: adding task " << task << " (type " << task->taskTypeId()
|
|
<< ") for folder " << task->folder() << " " << task->folder()->label() << endl;
|
|
#endif
|
|
mTaskList.append( task );
|
|
if ( immediate )
|
|
++mPendingImmediateTasks;
|
|
if ( !mCurrentTask && !mTimer.isActive() )
|
|
restartTimer();
|
|
}
|
|
}
|
|
|
|
void JobScheduler::removeTask( TaskList::Iterator& it )
|
|
{
|
|
if ( (*it)->isImmediate() )
|
|
--mPendingImmediateTasks;
|
|
mTaskList.remove( it );
|
|
}
|
|
|
|
void JobScheduler::notifyOpeningFolder( KMFolder* folder )
|
|
{
|
|
if ( mCurrentTask && mCurrentTask->folder() == folder ) {
|
|
if ( mCurrentJob->isOpeningFolder() ) { // set when starting a job for this folder
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << "JobScheduler: got the opening-notification for " << folder->label() << " as expected." << endl;
|
|
#endif
|
|
} else {
|
|
// Jobs scheduled from here should always be cancellable.
|
|
// One exception though, is when ExpireJob does its final KMMoveCommand.
|
|
// Then that command shouldn't kill its own parent job just because it opens a folder...
|
|
if ( mCurrentJob->isCancellable() )
|
|
interruptCurrentTask();
|
|
}
|
|
}
|
|
}
|
|
|
|
void JobScheduler::interruptCurrentTask()
|
|
{
|
|
Q_ASSERT( mCurrentTask );
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << "JobScheduler: interrupting job " << mCurrentJob << " for folder " << mCurrentTask->folder()->label() << endl;
|
|
#endif
|
|
// File it again. This will either delete it or put it in mTaskList.
|
|
registerTask( mCurrentTask );
|
|
mCurrentTask = 0;
|
|
mCurrentJob->kill(); // This deletes the job and calls slotJobFinished!
|
|
}
|
|
|
|
void JobScheduler::slotRunNextJob()
|
|
{
|
|
while ( !mCurrentJob ) {
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << "JobScheduler: slotRunNextJob" << endl;
|
|
#endif
|
|
Q_ASSERT( mCurrentTask == 0 );
|
|
ScheduledTask* task = 0;
|
|
// Find a task suitable for being run
|
|
for( TaskList::Iterator it = mTaskList.begin(); it != mTaskList.end(); ++it ) {
|
|
// Remove if folder died
|
|
KMFolder* folder = (*it)->folder();
|
|
if ( folder == 0 ) {
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << " folder for task " << (*it) << " was deleted" << endl;
|
|
#endif
|
|
removeTask( it );
|
|
if ( !mTaskList.isEmpty() )
|
|
slotRunNextJob(); // to avoid the mess with invalid iterators :)
|
|
else
|
|
mTimer.stop();
|
|
return;
|
|
}
|
|
// The condition is that the folder must be unused (not open)
|
|
// But first we ask search folders to release their access to it
|
|
kmkernel->searchFolderMgr()->tryReleasingFolder( folder );
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << " looking at folder " << folder->label()
|
|
<< " " << folder->location()
|
|
<< " isOpened=" << (*it)->folder()->isOpened() << endl;
|
|
#endif
|
|
if ( !folder->isOpened() ) {
|
|
task = *it;
|
|
removeTask( it );
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( !task ) // found nothing to run, i.e. folder was opened
|
|
return; // Timer keeps running, i.e. try again in 1 minute
|
|
|
|
runTaskNow( task );
|
|
} // If nothing to do for that task, loop and find another one to run
|
|
}
|
|
|
|
void JobScheduler::restartTimer()
|
|
{
|
|
if ( mPendingImmediateTasks > 0 )
|
|
slotRunNextJob();
|
|
else
|
|
{
|
|
#ifdef DEBUG_SCHEDULER
|
|
mTimer.start( 10000 ); // 10 seconds
|
|
#else
|
|
mTimer.start( 1 * 60000 ); // 1 minute
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void JobScheduler::runTaskNow( ScheduledTask* task )
|
|
{
|
|
Q_ASSERT( mCurrentTask == 0 );
|
|
if ( mCurrentTask ) {
|
|
interruptCurrentTask();
|
|
}
|
|
mCurrentTask = task;
|
|
mTimer.stop();
|
|
mCurrentJob = mCurrentTask->run();
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << "JobScheduler: task " << mCurrentTask
|
|
<< " (type " << mCurrentTask->taskTypeId() << ")"
|
|
<< " for folder " << mCurrentTask->folder()->label()
|
|
<< " returned job " << mCurrentJob << " "
|
|
<< ( mCurrentJob?mCurrentJob->className():0 ) << endl;
|
|
#endif
|
|
if ( !mCurrentJob ) { // nothing to do, e.g. folder deleted
|
|
delete mCurrentTask;
|
|
mCurrentTask = 0;
|
|
if ( !mTaskList.isEmpty() )
|
|
restartTimer();
|
|
return;
|
|
}
|
|
// Register the job in the folder. This makes it autodeleted if the folder is deleted.
|
|
mCurrentTask->folder()->storage()->addJob( mCurrentJob );
|
|
connect( mCurrentJob, SIGNAL( finished() ), this, SLOT( slotJobFinished() ) );
|
|
mCurrentJob->start();
|
|
}
|
|
|
|
void JobScheduler::slotJobFinished()
|
|
{
|
|
// Do we need to test for mCurrentJob->error()? What do we do then?
|
|
#ifdef DEBUG_SCHEDULER
|
|
kdDebug(5006) << "JobScheduler: slotJobFinished" << endl;
|
|
#endif
|
|
delete mCurrentTask;
|
|
mCurrentTask = 0;
|
|
mCurrentJob = 0;
|
|
if ( !mTaskList.isEmpty() )
|
|
restartTimer();
|
|
}
|
|
|
|
// DCOP call to pause any background jobs
|
|
void JobScheduler::pause()
|
|
{
|
|
mPendingImmediateTasks = 0;
|
|
if ( mCurrentJob && mCurrentJob->isCancellable() )
|
|
interruptCurrentTask();
|
|
mTimer.stop();
|
|
}
|
|
|
|
void JobScheduler::resume()
|
|
{
|
|
restartTimer();
|
|
}
|
|
|
|
////
|
|
|
|
KMail::ScheduledJob::ScheduledJob( KMFolder* folder, bool immediate )
|
|
: FolderJob( 0, tOther, folder ), mImmediate( immediate ),
|
|
mOpeningFolder( false )
|
|
{
|
|
mCancellable = true;
|
|
mSrcFolder = folder;
|
|
}
|
|
|
|
#include "jobscheduler.moc"
|