RFR(S): JDK-8157236 - attach on ARMv7 fails with com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file

Dmitry Samersoff dmitry.samersoff at oracle.com
Fri Aug 5 09:25:09 UTC 2016


Please review the fix:


  Tests fail intermittently because it can't attach to child process,
  these attach failures is hard to debug because attach framework
  doesn't provide enough diagnostic information.


  a) Increase attach timeout
  b) Slightly change attach loop to save a bit of CPU power.
  c) Add some logging to attach listener.

It's just a first step in this direction. Complete cleanup of attach
code (remove LinuxThreads support and convert all printing to UL) is not
a goal of this fix - I'll file a separate CR for it.


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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