<core-libs-dev> sun.management.Agent: the properties.putAll API may fail with ConcurrentModifcationException on multi-thread scenario
mandy.chung at oracle.com
Wed Apr 11 19:09:09 PDT 2012
On 4/11/2012 12:36 AM, Deven You wrote:
> Hi core-libs-devs,
> I am not sure if sun.management.Agent belongs to jmx-dev mailing list,
> if so please anyone tell me.
serviceability-dev (cc'ed) is the mailing list for this patch.
> This issue is that the sun.management.Agent.loadManagementProperties()
> will invoke properties.putAll which will throw
> ConcurrentModifcationException if there are other threads which modify
> the properties concurrently.
> I have made a patch which synchronize the sysProps so that putAll
> can work on multi-thread scenario. The test case is also available in
I think this could still run into CME. System Properties is not a
synchronized map and the setter methods (System.setProperty or
Properties.put method) doesn't synchronize on the Properties object.
> Thanks a lot!
>  http://cr.openjdk.java.net/~littlee/OJDK-256/webrev.00
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