Tuesday, October 19, 2004

Multithreaded toolkits

Graham Hamilton blogged about this topic.  His answer is no –at least considering the multithreading techniques available today–, but we should use events.

Here at JackBe we are developing a new version of our JackBuilder, a RAD for the development of JackBe-based web applications. The GUI  is 100% browser based, built in JavaScript and DHTML. Some days ago, I was considering whether to promote more multithreading within our tool or to stay event driven. With the ridiculous threading support of this platform (there are two ways of generate more than one thread, and no way to lock them at all) of course we remain event driven. Although we have a multithread tool for the runtime, in order to send a number of requests concurrently to the server (we call it JBPacemaker), the responses are rendered by the browser inside the threading model that it has to attend them. The problem arises when a JackBe programmer uses two different JBPacemakers and happens that the response code within that document affects the same object within the original document. But this is a platform lack, it is so much event driven that we are very exposed to any race condition raised by quasi-concurrent responses.

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