7191467: (fs) WatchService periodically fails to queue ENTRY_DELETE event for short lived file [sol11] (original) (raw)

Vitaly Davidovich vitalyd at gmail.com
Wed Aug 15 05:50:39 PDT 2012

Hi Alan,

SolarisWatchKey.getChild() doesn't need the null check anymore.

Thanks

Sent from my phone On Aug 15, 2012 7:20 AM, "Alan Bateman" <Alan.Bateman at oracle.com> wrote:

MayFlies is one of the tests for the WatchService, it's a stress test that ensures that there are corresponding ENTRYDELETE events for each ENTRYCREATE event when the files are very short lived. This test fails periodically on Solaris 11 where it appears that FILEREMOVE events aren't being queued by the kernel. There are a couple of workarounds in this code to deal with a kernel issues in this area and I've decided it to be best to just remove these and change the implementation so that it detects file deletions when scanning the directory (which it has to do anyway when the directory changes). The webrev with the changes is here: http://cr.openjdk.java.net/**alanb/7191467/webrev/<http://cr.openjdk.java.net/alanb/7191467/webrev/> The main change is that entries in directories are only registered with the kernel when the directory is registered for ENTRYMODIFY events. ENTRYCREATE and ENTRYDELETE events are now completely triggered on changes to the directory. One other change in here, and it stemmed from a discussion on this mail a few months ago, is that if there is an error encountered when iterating over the directory then an OVERFLOW event is queued. That is the trigger to the user application to re-scan the directory to update its view of the directory. -Alan -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.openjdk.java.net/pipermail/nio-dev/attachments/20120815/291cc57b/attachment.html

More information about the nio-dev mailing list