Hi, Christian, Yes,I have tried to modify the code to pass array. But it seems impossible. The reason is not from speed tracer part but from GWT internal implementation If I understand well. When you create a array in GWT like this :
short[] dataArray = new short[100]; The GWT will translate it to a none native javascript array like this: this.m_shortArray = initDim(_3S_classLit, {22:1}, -1, 4, 1); Once you want to pass your dataArray, an exception will be thrown because of clone error. It seems Web worker only supports native array clone. I have tried chrome and firefox and getting the same error. I don't know how to go further now. ;-( . Convert the array to string might be a solution but the performance will be bad for big array. OrNot On Aug 6, 2:01 am, cidylle0 <cidyl...@gmail.com> wrote: > Hi OrNot, > > Yes please if you could help out and let me take a look at your > project that would be great (cidyl...@gmail.com). Thanks a lot. > As for passing a canvas image array it should be possible since it can > be done in JavaScript. The postMessage method in the SpeedTracer code > indeed does only have String and Double. Maybe you could modify the > speedtracer MessageHandler class and add a method for array passing. > Or would stringifying the canvas array be possible ? > > On Aug 4, 6:08 pm, OrNOt <ornot2...@gmail.com> wrote: > > > > > > > > > Hi, Cidylle, > > I wrote one example based on speed tracer 'swebworkerand > > after some sort of struggling > > make it run. > > > If you like , I can send the source code to you. It seems no > > place to attach file here? > > > Regards. > > OrNot > > > BTW: I also need your help if possible. I want to pass a canvas' > > image array from front thread toworker, > > in javascript, it seems easy by the event.data. But I don't know how > > to pass it in Speed Tracer 's implementation. > > If I understand right, it only passes string and double. > > > On Aug 3, 8:56 am, cidylle0 <cidyl...@gmail.com> wrote: > > > > 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 theworkersend 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: > > > > ("workerbootstrap 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 BreakyWorkerinfrastructure (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. TheWorkerHost lives in > > > > the normal GWT module side of things, and the BreakyWorker is a > > > > DedicatedWorkerEntryPoint responsible for initializing theworker. 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 representingworkerentry 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 theworker. Again, if > > > > > anyone could provide a few basic steps to make a simplewebworker > > > > > work in GWT I would greatly appreciate. > > > > > > On a general note, I am a bit surprised by the lack of support > > > > > available forwebworkers 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 usedwebworkers 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 (workerpool) 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 likewebworkers. In the GWT > > > > > documentation > > > > > > > > > I see that it supports a couple HTML5 features but > > > > > > > > > noWebWorkers. > > > > > Are > > > > > > > > > there any libraries out there that would implementwebworkers > > > > > > > > > in > > > > > > > > > GWT ? Or can anybody point me to a simple tutorial ? I would > > > > > > > > > appreciate. Thanks. > > > > > > > > -- > > > > > > > You received this message because you are subscribed to the Google > > > > > Groups > > > > > > > "GoogleWebToolkit" group. > > > > > > > To post to this group, send email to > > > > > google-web-toolkit@googlegroups.com. > > > > > > > To unsubscribe from this group, send email to > > > > > > > google-web-toolkit+unsubscr...@googlegroups.com. > > > > > > > For more options, visit this group at > > > > > > >http://groups.google.com/group/google-web-toolkit?hl=en. > > > > > > -- > > > > > You received this message because you are subscribed to the Google > > > > > Groups > > > > > "GoogleWebToolkit" group. > > > > > To post to this group, send email to > > > > > google-web-toolkit@googlegroups.com. > > > > > To unsubscribe from this group, send email to > > > > > google-web-toolkit+unsubscr...@googlegroups.com. > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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