Hello, 1. Wt always renders all modifications to the widget tree in a single response (for application startup, there may be a few extra requests). All modifications of all modified subtrees are combined in one response. 2. When Wt processes a session, it grabs the WApplication::UpdateLock of that session. Therefore, for all event handlers initiated by the client, you are guaranteed to have exclusive access to the widget tree. If you take the initiative to use a session's widget tree server-side outside of this mechanism, you must grab the updatelock before doing so. 3. That is correct: threads are randomly assigned to incoming requests.
Regards, Wim. 2012/5/1 mobi phil <[email protected]>: > Hello, > > > trying to allocate again some time for wt programming... > I have however a question about the overall strategy of updating sub trees. > > Assumption about how wt works (of course this may be wrong): > > 1. an object tree (dom) is built dynamically on the browser (and on > the server) as a sequence of a first http request for the root html > followed by several subsequent ajax based http requests to <fill in > the gaps>/<decorate>/<make pages dynamic> or whatsoever purpose. > 2. for the same session multiple request may be sent and processed on > different trees > 3. these multiple requests may be handled on different threads > > What is the locking mechanism principle to avoid to mess up the object > tree on two different threads that operate for the same session > > If my question is unclear, please let me know. > > rgrds, > mobi phil > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > witty-interest mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/witty-interest ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ witty-interest mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/witty-interest
