[webkit-dev] parallel controls in JavaScriptCore engine

[Zoltan Herczeg]

Hi,

why don't you simply use a workaround?

<script>
 function success()
 {
    alert("Success");
    continueTask(true);
 }

 function failure()
 {
    alert("Failure");
    continueTask(false);
 }

 function continueTask(success)
 {
  x= 10+1;
 }
</script>

Zoltan

> Hello,
>
> As part of my project, we need to implement custom JS objects using
> JavaScriptCore API.
> I am seeking help in implementing in implementing one of the requirement
> and
> its possibility of accomplishing it in Webkit/JavaScriptcore.
> So, the requirement is, We need to add custom JS object , lets say
> "MyObject" and this object has one method wait() which should block the
> control until its previously requested operation completes.
>
> in Detail,
> *
> <script>
> function success()
> {
>    alert("Success");
> }
>
> function failure()
> {
>    alert("Failure");
> }
>
> MyObject.postMessage(success,failure,"hello, How r u?");
> MyObject.wait();
> x= 10+1;
> </script>*
>
> Here, MyObject.wait() should resume only after either of its success or
> failure callback is executed. The statement "x=10+1" would be executed
> only
> after either success or failure callback invoked.
>
> So my question here is, is this really possible to stop execution at one
> place and execute some thing else and resume back to previous execution
> point with JavaScript engine of Webkit.
>
> I have tried this using two threads by blocking the wait using mutex and
> calling success/failure callback using another thread but it app crashing.
>
> Can you please suggest me what are the possible ways to achieve the above
> requirement.
>
>
> Thanks
> Srinu
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