[jbossts-issues] [JBoss JIRA] (JBTM-1907) com.arjuna.ats.internal.arjuna.utils.UuidProcessId.getpid is slow

Mark Little (JIRA) jira-events at lists.jboss.org
Fri Sep 6 08:10:03 EDT 2013


     [ https://issues.jboss.org/browse/JBTM-1907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on JBTM-1907 stopped by Mark Little.

> com.arjuna.ats.internal.arjuna.utils.UuidProcessId.getpid is slow
> -----------------------------------------------------------------
>
>                 Key: JBTM-1907
>                 URL: https://issues.jboss.org/browse/JBTM-1907
>             Project: JBoss Transaction Manager
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 5.0.0.M4
>            Reporter: Stuart Douglas
>            Assignee: Mark Little
>
> the getPid() method uses a synchronized block that is hit on every call, which can causes a lot of unnecessary contention. I'm not sure why the pid cannot just be initialized in the constructor? Or failing that a volatile var + double checked locking would be faster.

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