Chris,
Thanks again for your pointers, they have been very helpful. Following
your advice I believe I managed to set up the proper configuration and
I feel I am very close to succeeding. So far I am simply trying to
test the set up by sending a message from the main module to the
worker, and have the worker send back the message then display it in
an alert window. As I attempt to do so with postMessage() methods I
run into an error I cannot seem to correct:
("worker bootstrap error" : "alert not defined" )
Do you have any idea what that error could be ? I have the error
whether i use simple strings or JSON objects in postMessage. I have
ran a couple searches and looked into the wc3 specs but to no avail.
Thank you.
On Aug 2, 10:18 am, Chris Conroy <con...@google.com> wrote:
> Within SpeedTracer take a look at the Breaky Worker infrastructure (used to
> validate the schema of records SpeedTracer receives from Chrome):
>
> client/ui/src/com/google/speedtracer/...
> breaky/BreakyWorker.gwt.xml
> breaky/worker/BreakyWorker.java
> client/model/BreakyWorkerHost.java
>
> To get an idea of how all this stuff is wired up. The Worker Host lives in
> the normal GWT module side of things, and the BreakyWorker is a
> DedicatedWorkerEntryPoint responsible for initializing the worker. Since
> it's small, it also handles the handling of messages.
>
> The BreakyWorker.gwt.xml module pulls in our WebWorker definition and uses
> the DedicatedWorkerLinker.
>
>
>
>
>
>
>
> On Mon, Aug 1, 2011 at 7:58 PM, cidylle0 <cidyl...@gmail.com> wrote:
> > Thank you for your input Chris.
> > Yes I have been looking at the code included in Speedtracer but
> > without documentation (and the fact that I am a novice GWT developer)
> > I am having a difficult time figuring out how to the webworker is
> > being set up and used in Speedtracer. There seems to be a module for
> > the webworker with various classes representing worker entry points
> > but I am not sure which would to implement and in what context. In the
> > xml files of the modules i did notice an <add-linker ...> tag which I
> > am assuming points to the module that represents the worker. Again, if
> > anyone could provide a few basic steps to make a simple web worker
> > work in GWT I would greatly appreciate.
>
> > On a general note, I am a bit surprised by the lack of support
> > available for web workers in gwt, when there is support for other
> > HTML5 features like local storage, canvas etc. Does anyone know why it
> > is the case ? Are people not interested in using multi-threading in
> > GWT or is GWT not a suitable tool for such an application ?
>
> > On Aug 1, 3:54 pm, Chris Conroy <con...@google.com> wrote:
> > > You definitely don't want to use gears.
>
> > > You can take a look at how SpeedTracer uses WebWorkers via a custom
> > > DedicatedWebWorker linker:
> >http://code.google.com/p/speedtracer/source/browse/#svn%2Ftrunk%2Fsrc...
>
> > > Note that you cannot reference $doc or $wnd in the webworker.
>
> > > On Mon, Aug 1, 2011 at 6:37 PM, cidylle0 <cidyl...@gmail.com> wrote:
> > > > Hi Allahbaksh.
>
> > > > I did run accross the gwt-ns you mentioned but I am having trouble
> > > > running the sample described. Can't seem to set it up right. The
> > > > documentation is very minimal and the project seems to have been
> > > > halted. Can anyone who has used web workers with GWT before help me
> > > > out or point me out to some JAR or tutorial out there ? I found
> > > > something called google Gears that seemed to have been doing something
> > > > very similar (worker pool) but it has recently been deprecated. Any
> > > > help would be appreciated. Thanks.
>
> > > > On Aug 1, 5:02 am, Allahbaksh <a.allahba...@gmail.com> wrote:
> > > > > HI,
> > > > > Check gwt-ns project. I have personally not used it.
> > > > > Regards,
> > > > > Allahbaksh
>
> > > > > On Jul 30, 6:08 am, cidylle0 <cidyl...@gmail.com> wrote:
>
> > > > > > Hello,
>
> > > > > > I am currently playing around with GWT and I would like to
> > implement
> > > > > > some HTML5 features with it like web workers. In the GWT
> > documentation
> > > > > > I see that it supports a couple HTML5 features but no Web Workers.
> > Are
> > > > > > there any libraries out there that would implement web workers in
> > > > > > GWT ? Or can anybody point me to a simple tutorial ? I would
> > > > > > appreciate. Thanks.
>
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