* * On Sun, Jun 5, 2011 at 1:25 PM, Thiago Macieira <thi...@kde.org> wrote:
> Em Sunday, 5 de June de 2011, às 13:06:07, tushar mehta escreveu: > > Hi all, > > > > I am currently trying to understand how kde applications uses kio > > for doing file related operations. I am currently working on kget and > > as part of my summer of code project task I need to figure out how > > we can have speed limit on transfer using kio protocols like http/ftp. > > > > Do have we have any sample examples or documentation related > > to KIO? > > >I don't think there's any documentation on that. Just read the source > code, > >starting at KIO::Connection. > > >But to simplify what you're looking for: kioslaves use blocking methods. > They > >read from the network one chunk of data and then they send that chunk of > data > >to the application (via KIO::Connection). The application also uses > >KIO::Connection to read that chunk of data. > > >When the ioslave fills up the kernel transfer buffer, KIO::Connection will > >block, waiting for the application to read from the same buffer. > > >In order to implement a rate control in the ioslave, you simply need to > >implement a rate control in the application. After the stabilisation > phase, > >the ioslave will download at the same rate that the application reads from > the > >slave. > > -- > Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org > Senior Product Manager - Nokia, Qt Development Frameworks > PGP/GPG: 0x6EF45358; fingerprint: > E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 > > > >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to > unsubscribe << > *Question:* Do we have any control on how much data kioslaves will read from network and put into kernel buffer? and if *application* is taking out the data from kernel buffer at some rate then it will be specific to that application and other applications which are using same type of slaves will not have the speed control on the data which they are dealing with. Can we do something so that KIO it self will fill the kernel buffer at some configurable rate?
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