I'm not sure if there has been a change in the spec., but my
understanding was that multiple instance of the servlet would be
created. Each one is a single thread class, but there can be multiple
of them. The cost is in the class turnover, not in the fact that each
request is blocked.
Adrian Janssen wrote:
The servlet is blocked with one thread inside it. When you make the call
with another browser window it starts NEW SECOND thread. This thread is NOT
LET INTO the servlet because it implements the SingleThreadModel and there
is ALREADY ONE THREAD INSIDE IT.
The 4.1 on W2K seems to be incorrect - it should behave like 3.2.1 on
linux!!!!
-----Original Message-----
From: Patricio Vera S. [SMTP:[EMAIL PROTECTED]]
Sent: 10 December 2002 03:22
To: [EMAIL PROTECTED]
Subject: Re: servlet implementing SingleThreadModel
That's is the idea, block the servlet so when call with another
browser
instance force to execute a new thread....
It's semms ok in tomcat 4.1 on W2K but not in tomcat 3.2.1 on linux.
Saludos,
Patricio Vera S.
----- Original Message -----
From: "Partha Ranjan Das" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, December 10, 2002 3:10 AM
Subject: Re: servlet implementing SingleThreadModel
if (sOpcion.equals("SS")) {
while ( true )
;
}
What does this code do? it will loop eternally.
-----Original Message-----
From: Adrian Janssen [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, December 10, 2002 12:27 PM
To: [EMAIL PROTECTED]
Subject: Re: servlet implementing SingleThreadModel
SingleThreadModel means that only one thread is allowed to run in your
servlet at a time. So what is happening is with your first call to the
servlet a thread starts to execute in the servlet - but it never leaves
the
servlet, as per yopur code. It thereby blocks the second call which will
start a new thread that will try to run through the servlet but due to
the
fact the thread from the first call is still running in the servlet the
second call's thread is blocked due to the restrictions of the
SingleThreadModel.
So if anything the W2K implementation seems like it might be incorrect,
but
I suspect that it is setup differently, perhaps with a very short
timeout.
Cheers
Adrian
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