Salut,
Ken--_at_newsgroupstats.hk wrote:
> In real situation, a thread for serving web request may be blocked (or
> time-waiting?) by something like waiting db enquiry result or waiting remote
> process to response (like rmi?). In non-blocking http server like Grizzly,
> will the blocked thread be availabled for other web request(s)?
By default, the thread will be blocked. But we have a Grizzly extension
called Grizzly Asynchronous Request Processing[1] that exactly allow you
to do what want, e.g. free threads from blocking on resources. I've gave
an example in [2], and our Comet[4] support is based on top of Grizzly
ARP. I suspect Comet is what you need to look at (Read [4] first IMO)
>
> The stress test result (pages / second) for the following JSP in Glassfish
> V2 is the same as Tomcat
> <!--test_sleep.jsp-->
> <%Thread.sleep(100L);%>
> <!--end test_sleep.jsp-->
>
> How about this one?
> <!--test_block.jsp-->
> <%
> ArrayBlockingQueue<Result> arrayBlockingQueue = new ArrayBlockingQueue(1);
>
> //ask for result, the result will be stored in the queue by another thread
> RemoteProcess.askForResult(arrayBlockingQueue);
>
> Result result = null;
> try {
> // waiting result for 10 seconds, the thread for running this request will
> be blocked up to 10 seconds
> result = arrayBlockingQueue.poll(10, TimeUnit.SECOND);
> } catch (Exception e) {
> }
> if (result == null) System.out.println("Time out...");
> %>
> <!--end test_block.jsp-->
>
> How to write my web application so that I can fully make use your thread
> pool?
Yes that's clear. Take a look at the AsyncFilter interface[3] or you
might want to uses Comet directly[4] (based on you example above, I
Strongly recommend you take a look at Comet). Just take a quick look and
let me know if that help or if you need more information.
Hope you understand my question.
Pretty clear.
Thanks!
--Jeanfrancois
[1]
http://weblogs.java.net/blog/jfarcand/archive/2006/02/grizzly_part_ii.html
[2]
http://weblogs.java.net/blog/jfarcand/archive/2008/07/extending_the_g.html
[3]
https://grizzly.dev.java.net/nonav/apidocs/com/sun/grizzly/arp/AsyncFilter.html
[4]
http://weblogs.java.net/blog/jfarcand/archive/2006/07/the_grizzly_com.html
>
> Regards,
> Ken
>
>
>
>