Hi all,
please review the fix for
https://bugs.openjdk.java.net/browse/JDK-8235211
webrev:
http://cr.openjdk.java.net/~amenkov/jdk15/RemovingUnixDomainSocket/webrev/
Test failures are caused by deadlock during attach listener restarting:
check_socket_file function aborts socket listening and waits while
attach listener state becomes AL_NOT_INITIALIZED (it happens when
AttachListener::dequeue returns NULL).
AttachListener::dequeue method is blocked in ThreadBlockInVM dtor.
To solve it ThreadBlockInVM was added inside waiting cycle in
check_socket_file.
Other changes:
- made _listener (and _shutdown for aix) volatile as they are used by 2
threads (attach listener thread and signal handler thread) without
synchronization;
- added close() for listening socket on aix (before it had only
shutdown() for it);
- additional logging and some cleanup in the test;
- added handling of LingeredApp hang.
--alex
