Created attachment 74897 [details]
Deadlock threads

Created attachment 74898 [details]
message file form var/log directory

*** Issue 155333 has been marked as a duplicate of this issue. ***

CloneableEditorSupport seems to be firing events when holding its lock. This is generally deadlock prone and should be
avoided.

It is not so easy to put firing out of lock. I would suggest to process event asynchronously. Jarda any suggestion how
to fix this deadlock?

Replace fireDocument call with:

boolean toFire = false;
synchronized (getLock()) {

  // no fireDocument
  toFire = true;


}
if (toFire) {
  fireDocument(...);
}

You can do similar change for other types of events when you are at it.

Firing document change event is moved out of CES lock when document is opened/closed. All tests passed. We will see if
it breaks anything.

core-main #06b409d61fca

Integrated into 'main-golden', will be available in build *200901091401* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Changeset: http://hg.netbeans.org/main/rev/06b409d61fca
User: Marek Slama <mslama@netbeans.org>
Log: #155326: Move firing document change event out of lock.