ParserPool is not performant

[glassfishrobot]

The com.sun.xml.messaging.saaj.util.ParserPool does not perform well under heavy
concurrent use. This class should be refactored to use the facilities provided
by java.util.concurrent.

Environment

Operating System: All
Platform: All

Affected Versions

[1.3.1]

[glassfishrobot]

Reported by kevinconaway

[glassfishrobot]

Was assigned to saaj-issues

[glassfishrobot]

kevinconaway said:
Created an attachment (id=16)
Attaching patch that uses and ArrayBlockingQueue instead of synchronized access to a Stack

[glassfishrobot]

File: saaj-41.patch
Attached By: kevinconaway

[glassfishrobot]

kevinconaway said:
Created an attachment (id=17)
Attaching updated patch that returns parsers to the pool appropriately in case of error

[glassfishrobot]

File: saaj-41-updated.patch
Attached By: kevinconaway

[glassfishrobot]

@vbkumarjayanti said:
Thanks for this. Will review your patch and try to put it in ASAP.

[glassfishrobot]

@vbkumarjayanti said:
Hi kevinconaway,

Sorry i did not act for long on your patch, just got busy with my other
project(s).

Now it looks like the idea of parserpools itself is problematic.

Please see : https://saaj.dev.java.net/issues/show_bug.cgi?id=46

I will look into both the issues together and see what is best.

Thanks again for providing the patch. If you have an opinion let me know.

Thanks.

[glassfishrobot]

@vbkumarjayanti said:
I have putback your proposed changes. Thanks for the same, though i now still
need to investigate issue 46.

Thanks.

[glassfishrobot]

File: saaj-41-updated-2.patch
Attached By: kevinconaway

[glassfishrobot]

kevinconaway said:
Created an attachment (id=18)
Updated patch to set the interrupt status

[glassfishrobot]

kevinconaway said:
I'm reopening the issue because I've added an updated patch. The ParserPool
needs to call Thread.currentThread().interrupt() when catching an
InterruptedException. This ensures that the interrupt gets propagated up the
call chain.

[glassfishrobot]

This issue was imported from java.net JIRA SAAJ-41