RFR 8202292 : test/jdk/java/io/FileOutputStream/UnreferencedFOSClosesFd.java fails with "raw fd count wrong"

David Holmes david.holmes at oracle.com
Mon Jun 25 05:00:51 UTC 2018

Hi Roger,

On 23/06/2018 12:49 AM, Roger Riggs wrote:
> Hi Brian, Mandy,
> Listing the open file descriptors can be a useful utility. Originally I 
> thought it was a temporary and throw away code.
> To be a utility it needed to be a bit more general (sending the output 
> to a particular stream).
> Thanks for the suggestions.

You might want to look at the code Leo used for a hotspot test recently. 
It covers more locations for lsof and also supports pfiles for Solaris:


But there can be other locations like /usr/local/bin for lsof on Solaris 


> Please review:
>    http://cr.openjdk.java.net/~rriggs/webrev-count-wrong-8202292/
> Thanks, Roger
> On 6/21/2018 3:25 PM, Brian Burkhalter wrote:
>> Hi Roger,
>> Are the three versions of listProcFD() identical? Is so, could this 
>> method be put in test/lib/jdk/test/lib/util/FileUtils.java instead?
>> Thanks,
>> Brian
>> On Jun 21, 2018, at 11:59 AM, Roger Riggs <Roger.Riggs at Oracle.com 
>> <mailto:Roger.Riggs at Oracle.com>> wrote:
>>> Please review a test improvement to avoid spurious errors caused by 
>>> concurrent changes in open files during the test.
>>> The other existing conditions in the test are sufficient to verify 
>>> the correct finalize behavior.
>>> Some additional diagnostics are added and the tests removed from the 
>>> problem list.
>>> Webrev:
>>> http://cr.openjdk.java.net/~rriggs/webrev-count-wrong-8202292/index.html 
>>> <http://cr.openjdk.java.net/%7Erriggs/webrev-count-wrong-8202292/index.html> 
>>> Issue:
>>> https://bugs.openjdk.java.net/browse/JDK-8202292

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