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Subject: RE: Is ThreadLocal safe to use in servlets
From: lightbulb432 [mailto:[EMAIL PROTECTED]
Subject: Re: Is ThreadLocal safe to use in servlets
A different way of asking this question is where/when
does Tomcat start the Thread that handles a given
request, and what is executed
From: Martin Gainty [mailto:[EMAIL PROTECTED]
Subject: Re: Is ThreadLocal safe to use in servlets
Just so I understand..you're advocating ThreadLocal over
immutable variables or Local variables?
Not at all - just pointing out the ramifications of using ThreadLocal in
a thread-pooling
From: lightbulb432 [mailto:[EMAIL PROTECTED]
Subject: RE: Is ThreadLocal safe to use in servlets
When might an advanced Tomcat user need to play with this
Executor element?
To conserve resources when multiple Connector elements are configured.
No point in having a multitude of idle
users of
the Singleton. (Though it does simplify each of the 5 methods, making them
oblivious to the fact that they're dealing with ThreadLocals, and that's
what I'm hoping you might be able to suggest a way of doing...)
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Martin,
Martin Gainty wrote:
Just so I understand..you're advocating ThreadLocal over immutable
variables or Local variables?
ThreadLocals... ya know: the power of thread variables with the
convenience of local variables.
Get with the program.
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lb,
lightbulb432 wrote:
I have another question about using ThreadLocal as an instance variable in a
threadsafe Singleton. If the Singleton has 5 instance methods, each of which
requires use of the value stored in the ThreadLocal, I see one
From: lightbulb432 [mailto:[EMAIL PROTECTED]
Subject: RE: Is ThreadLocal safe to use in servlets
Is it safe to assume that this is the way to go, or are
there ever, ever any times when it would be less desirable
to go this route than the default thread-pool-per-connector
element?
I
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From: lightbulb432 [mailto:[EMAIL PROTECTED]
Subject: Re: Is ThreadLocal safe to use in servlets
A different way of asking this question is where/when
does Tomcat start the Thread that handles a given
request, and what is executed in the context of that
thread? (e.g. filters, listeners
that are inserted elsewhere in the same
request that created/invalidated a session, or bound/unbound a session
attribute.
Caldarale, Charles R wrote:
From: lightbulb432 [mailto:[EMAIL PROTECTED]
Subject: Re: Is ThreadLocal safe to use in servlets
A different way of asking this question is where/when
From: lightbulb432 [mailto:[EMAIL PROTECTED]
Subject: RE: Is ThreadLocal safe to use in servlets
Based on the behavior you specified of ThreadLocals sticking
around after the webapp is undeployed, is it correct to say
that the thread pool you mentioned is global to ALL webapps
in Tomcat
instead?
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with the last
few releases of Java.)
Has anyone had experience using them successfully, or even unsuccessfully?
If so, please share your insights.
Thanks.
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unsuccessfully?
If so, please share your insights.
Thanks.
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From: lightbulb432 [mailto:[EMAIL PROTECTED]
Subject: Is ThreadLocal safe to use in servlets
Are ThreadLocal variables safe to use with servlets?
They're great for keeping track of bits and pieces for a given request,
but can lead to GC problems if used for data with a longer lifetime
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