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List:       kde-devel
Subject:    Re: KIO::Scheduler::assignJobToSlave()
From:       Paulo Moura Guedes <pmg () netcabo ! pt>
Date:       2004-04-29 3:20:43
Message-ID: 200404290420.43509.pmg () netcabo ! pt
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Well I tried something simpler:

    KIO::Slave *slave = 
KIO::Scheduler::getConnectedSlave(KURL("http://kde.org"));
    KIO::TransferJob *job1 = KIO::get(KURL("http://kde.org"));
    KIO::Scheduler::assignJobToSlave(slave, job1);

and i noticed that 'slave' never gets connected...

On Thursday 29 April 2004 03:33, Paulo Moura Guedes wrote:
> Hi,
>
> For performance I want to use the same connection for several jobs.
> The point 3 of detailed description of class KIO::Scheduler seemed to be
> just what I want
>
> 
(http://developer.kde.org/documentation/library/cvs-api/kio/html/classKIO_1_1Scheduler.html):
> > 3. Connection Oriented
> > For some operations it is important that multiple jobs use the same
>
> connection. This can only be ensured if all these jobs use the same slave.
>
> >  You can ask the scheduler to open a slave for connection oriented
>
> operations. You can then use the scheduler to assign jobs to this slave.
> The jobs will be queued and the slave will handle these jobs one after the
>
> other.> Example:
> >     Slave *slave = KIO::Scheduler::getConnectedSlave(
> >             KURL("pop3://bastian:password@mail.kde.org"));
> >     TransferJob *job1 = KIO::get(
> >             KURL("pop3://bastian:password@mail.kde.org/msg1"));
> >     KIO::Scheduler::assignJobToSlave(slave, job1);
> >     TransferJob *job2 = KIO::get(
> >             KURL("pop3://bastian:password@mail.kde.org/msg2"));
> >     KIO::Scheduler::assignJobToSlave(slave, job2);
> >     TransferJob *job3 = KIO::get(
> >             KURL("pop3://bastian:password@mail.kde.org/msg3"));
> >     KIO::Scheduler::assignJobToSlave(slave, job3);
> >
> >     // ... Wait for jobs to finish...
> >
> >     KIO::Scheduler::disconnectSlave(slave);
>
> What I tried to do was to create a slave once, with
> KIO::Scheduler::getConnectedSlave, and then use that slave when I need to
> get local domain URLs, with KIO::Scheduler::assignJobToSlave().
> I get a segfault, somewhere in the process, when I try to connect one of
> the jobs to the slots.
>
> Then I looked at KIO::Scheduler source code and it says:
> > * @param slave 	The slave to use. The slave must have been obtained
> > *              			with a call to @ref getConnectedSlave and must not
> > *              			be currently assigned to any other job.
>
> Not currently assigned to other jobs? That's not what is done in the first
> example?
>
> Can you give some directions in order the benefit from using the same
> connection?

-- 
Paulo Moura Guedes
 
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