> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
> Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
>
> Yes, but in order to /detect/ the change, the ClassLoader needs to know
> which classes it loaded. I wasn't suggesting that the WebappCl
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Chuck,
On 10/10/2009 10:26 AM, Caldarale, Charles R wrote:
>> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
>> Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
>>
>> Also, the WebappClass
2009/10/11 Pid :
>
> Is there a page on the Wiki for bookmarking threads that are 'essential
> reading'? I can't see one, but we ought to create one somewhere.
>
There are
http://wiki.apache.org/tomcat/FAQ
http://wiki.apache.org/tomcat/HowTo
http://wiki.apache.org/tomcat/FAQ/Miscellaneous
If yo
On 10/10/2009 23:52, André Warnier wrote:
Caldarale, Charles R wrote:
From: André Warnier [mailto:a...@ice-sa.com]
Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
Not that it was my thread to begin with, and not thjat it's really
dramatic either, but I suppose you guys
Caldarale, Charles R wrote:
From: André Warnier [mailto:a...@ice-sa.com]
Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
Not that it was my thread to begin with, and not thjat it's really
dramatic either, but I suppose you guys must realise that you lost me,
like, abo
> From: André Warnier [mailto:a...@ice-sa.com]
> Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
>
> Not that it was my thread to begin with, and not thjat it's really
> dramatic either, but I suppose you guys must realise that you lost me,
> like, abo
Christopher Schultz wrote:
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Chuck,
On 10/10/2009 9:26 AM, Caldarale, Charles R wrote:
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
My direct experience that had
> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
> Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
>
> Is that because the primordial ClassLoader will hand-out references to
> any class already loaded by any ClassLoader, so if null is retur
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Chuck,
On 10/10/2009 9:26 AM, Caldarale, Charles R wrote:
>> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
>> Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
>>
>> My direct experience th
> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
> Subject: Re: [OT] tomcat 5.5.25 shared lib and sharing webapp jars
>
> One additional requirement: the java.lang.Class object itself must also
> be unreachable.
True.
> My direct experience that had led
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Chuck,
On 10/9/2009 7:14 PM, Caldarale, Charles R wrote:
>> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
>> Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>>
>> PermGen is a place where Cl
[If you're not interested in VM theory, it's safe to ignore this post]
2009/10/10 Christopher Schultz :
> What about classes with mutable static members? These members should be
> preserved for a while, right? Does this mean that classic Java
> singletons are never able to be GC'd because they hav
> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
> Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>
> What about classes with mutable static members? These members should be
> preserved for a while, right?
Only while the java.lang.Class instan
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Chuck,
On 10/9/2009 7:14 PM, Caldarale, Charles R wrote:
>> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
>> Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>>
>> The webapp itself is irrel
> From: Christopher Schultz [mailto:ch...@christopherschultz.net]
> Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>
> > From: André Warnier [mailto:a...@ice-sa.com]
> > Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>
> > You must hav
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André,
On 10/9/2009 5:29 PM, André Warnier wrote:
> Caldarale, Charles R wrote:
> Being ever eager to learn, I have been following this thread with interest.
>
> Do I understand this correctly, if I draw the following conclusions :
>
> - the Heap is
Caldarale, Charles R wrote:
Also be aware that any static fields or singleton objects in the shared classes
really will be shared by each webapp, whereas before each webapp had its own
copy.
You must have meant "shared by all webapps". Chuck, you should really
watch your usage of the termin
> From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com]
> Subject: RE: tomcat 5.5.25 shared lib and sharing webapp jars
>
> Sorry, I think I used poor wording there. Should have used something
> like "instances of classes loaded by a webapp's classloader"
> From: Curtis Garman [mailto:curt.gar...@gmail.com]
> Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>
> Honestly, I'm not that familiar with classloaders...I've never had to
> deal with them...what would I look at to determine if this danger is
> lik
]
>> Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>>
>> So are you saying that I shouldn't use the shared lib at all?...or
>> just sparingly?
>
> Sparingly, only for those classes that you are absolutely certain never
> retain references to objects t
> From: Curtis Garman [mailto:curt.gar...@gmail.com]
> Subject: Re: tomcat 5.5.25 shared lib and sharing webapp jars
>
> So are you saying that I shouldn't use the shared lib at all?...or
> just sparingly?
Sparingly, only for those classes that you are absolutely certain neve
So are you saying that I shouldn't use the shared lib at all?...or
just sparingly?
On Fri, Oct 9, 2009 at 12:36 PM, Caldarale, Charles R
wrote:
>> From: Curtis Garman [mailto:curt.gar...@gmail.com]
>> Subject: tomcat 5.5.25 shared lib and sharing webapp jars
>>
>>
> From: Curtis Garman [mailto:curt.gar...@gmail.com]
> Subject: tomcat 5.5.25 shared lib and sharing webapp jars
>
> I've got a question about the tomcat 5.5.25 shared lib...is there any
> danger of using this almost exclusively if you have a lot of jars that
> are shared
I've got a question about the tomcat 5.5.25 shared lib…is there any
danger of using this almost exclusively if you have a lot of jars that
are shared among apps. I know you can but I also saw something
somewhere and now again
(http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-pr
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