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Bug 37040

Summary:	Possible deadlock in nodes.
Product:	platform	Reporter:	Petr Nejedly <pnejedly>
Component:	Nodes	Assignee:	Jaroslav Tulach <jtulach>
Status:	VERIFIED FIXED
Severity:	blocker	Keywords:	THREAD
Priority:	P2
Version:	3.x
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:

Description Petr Nejedly 2003-11-05 09:01:41 UTC

updateChildren impl in FilterNode can still
potentially cause deadlock, if the children type
of the original Node is changed and then isLeaf is
called on the FilterNode, it calls setChildren and
tries to upgrade the Mutex from readAccess to
writeAccess, which is deadlock prone.
I've simulated it in the
FilterNodeTest.testIsLeafCanUpdateWhenAnotherThreadHoldsALock
Uncomment the test and try it.

Comment 1 Jaroslav Tulach 2003-11-05 12:21:24 UTC

Checking in src/org/openide/nodes/FilterNode.java;
/cvs/openide/src/org/openide/nodes/FilterNode.java,v  <--  FilterNode.java
new revision: 1.86; previous revision: 1.85
done
Processing log script arguments...
More commits to come...
Checking in test/unit/src/org/openide/nodes/FilterNodeTest.java;
/cvs/openide/test/unit/src/org/openide/nodes/FilterNodeTest.java,v 
<--  FilterNodeTest.java
new revision: 1.12; previous revision: 1.11

Comment 2 Petr Nejedly 2003-11-06 12:16:35 UTC

seems OK