RFR: Backport of JDK-8044135: Add API to start JMX agent from attach framework

Dmitry Samersoff dmitry.samersoff at oracle.com
Thu Sep 4 12:09:10 UTC 2014


Staffan,

On 2014-09-04 16:02, Staffan Larsen wrote:
> 
> On 4 sep 2014, at 13:52, Dmitry Samersoff <dmitry.samersoff at oracle.com> wrote:
> 
>> Staffan,
>>
>> WindowsVirtualMachine.java:109 Should we close PipedInputStream ?
> 
> There is a catch-statement that does this for IOExceptions on line 125. Since AttachOperationFailedException is an IOException it the pipe will get closed there. It really should be a finally (or try-with-resources) block instead.

At ll. 125 we are closing pipe:

   closePipe(hPipe);

But It might be necessary to close PipedInputStream as well.

-Dmitry


> 
> Thanks,
> /Staffan
> 
>>
>> Otherwise looks good.
>>
>> -Dmitry
>>
>> On 2014-09-04 14:11, Staffan Larsen wrote:
>>> Can I interest any Reviewers in taking a look at this?
>>>
>>> Thanks,
>>> /Staffan
>>>
>>> On 3 sep 2014, at 14:27, Staffan Larsen <staffan.larsen at oracle.com> wrote:
>>>
>>>> …aaaand the link: http://cr.openjdk.java.net/~sla/8044398-8039173-8044135-jdk8u/webrev.00/
>>>>
>>>> /Staffan
>>>>
>>>> On 3 sep 2014, at 14:25, Staffan Larsen <staffan.larsen at oracle.com> wrote:
>>>>
>>>>> This is a review for a backport of JDK-8044135 to jdk8u. This fix had a few dependencies that also needed backporting, so included in this review are the following fixes from JDK9:
>>>>>
>>>>> • 8044135 Add API to start JMX agent from attach framework (jdk)
>>>>> • 8039173 Propagate errors from Diagnostic Commands as exceptions in the attach framework (jdk)
>>>>> • 8044398 Attach code should propagate errors in Diagnostic Commands as errors  (hotspot)
>>>>>
>>>>> The only significant change from the version in JDK 9 is that startManagementAgent() and startLocalManagementAgent() in VirtualMachine.java have "@since 1.8" (instead of 1.9).
>>>>>
>>>>> After speaking with the maintainers and gatekeepers, I plan to push this to the jdk8u-hs-dev repository.
>>>>>
>>>>> Thanks,
>>>>> /Staffan
>>>>>
>>>>
>>>
>>
>>
>> -- 
>> Dmitry Samersoff
>> Oracle Java development team, Saint Petersburg, Russia
>> * I would love to change the world, but they won't give me the sources.
> 


-- 
Dmitry Samersoff
Oracle Java development team, Saint Petersburg, Russia
* I would love to change the world, but they won't give me the sources.


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