The only thing I have left to suggest is make a test case that reproduces
those errors and send it over here.
I'm sure someone will be able to help.
Have you tried compiling it with the newest version of Wt?
2010/1/14 HADASS YAARI <[email protected]>
> hello again,
> following my last mail.
> It is difficult the explain the problems because they are inconsistent, but
> I'll try:
> I use to update my dynamic pages with WTimer. I have 3 dynamic pages with
> very big tables.
> On timer tick I clear the table content and fill in new elements.
> Apparently the tables were very big and update time was too long so the
> browser window stucked until the refresh.
> So I decided to change the method to server push.
> I have a cyclic thread that emits the signal whenever needed. The pages
> register the signal in the Ctr.
> the errors are different:
> - vector subscript out of range (call stuck: WContainerWidget:: updateDom()
> --> server::connection::handleReadyBody()).
> - map/set iterator incompatible.
> - sometimes a popup appears with : "wt internal error : [object error],
> code undefined, description, object required"
>
> I suppose there is parallel access to a member of the application.
> I take the application lock before updating and use triggerUpdate when I
> finish. the update contains clearing 2 tables and filling in them with new
> elements. I do the same as in the SimpleChat example.
> As I wrote last time, I use the same method with the WTimer and it works
> fine.
> I also tried to use the WTimer to just emit the signal and it works fine.
> This way would have pleased me, but strangely it works slow too - I suppose
> that when it emits the signal there is a context switch before the method of
> the WTimer returns (maybe because of high priority of handling signal).
>
> Again, I know it is not very informative, but please think how to guide me
> what to do in order to solve it.
> Hadas
>
> -----Original Message-----
> *From:* omer katz [mailto:[email protected]]
> *Sent:* Wednesday, January 13, 2010 1:27 PM
> *To:* [email protected]
> *Subject:* Re: [Wt-interest] server push problems
>
> My first sugesstion is to create a separate branch and try to compile it
> with the newest version.
> My second suggestion is if possible show us the error log and the code that
> causes the errors.
> Is it a segfualt? Is it a deadlock? What kind of errors are you guys
> getting?
> It doesn't work! doesn't really help us.
>
> Omer Katz
>
> 2010/1/13 HADASS YAARI <[email protected]>
>
>> Hello everybody,
>> In order to accelerate updates of dynamic pages and due to your
>> recommendation, I changed 3 dynamic pages from updating by WTimer to
>> updating by server push.
>> I added a signal and a cyclic thread that emits it whenever needed. The 3
>> pages (container widgets) connect to the signal in the Ctr.
>> I use the same method to update the page that I used with the Wtimer.
>> I don't know why but the application collapse when updating. The collapse
>> is not consistent and also the errors not.
>>
>> I implemented exactly like in the simpleChat example:
>> In the Ctr I wrote: WApplication::instance->enableUpdate();
>> and also connected to the signal.
>>
>> In the method that is called by the signal emit I wrote:
>> lock = WApplication::instance->getUpdateLock();
>> and then I clear 2 tables and inseret new data to them.
>> afterwards :
>> WApplication::instance->triggerUpdate();
>>
>> The collapse is not when calling triggerUpdate but in the methods between
>> getting the lock and triggerUpdate.
>>
>> the errors are different everytime. One of the errors was from
>> CreateDomElement and another one from WebRender::needUpdate().
>>
>> What's the problem?
>> the same methods works fine with the WTimer so I guess the problem is not
>> in the updating table methods.
>> I use older version of Wt (2.2.3) - If this bug was fixed, please tell me.
>>
>> Thank you,
>> Hadas
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