[commit-cp] [patch #3612] serious race condition in java.lang.VMThread.create(...)

[Stephen Crawley]

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 of the project: classpath.




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[patch #3612] Full Item Snapshot:

URL: <http://savannah.gnu.org/patch/?func=detailitem&item_id=3612>
Project: classpath
Submitted by: Stephen Crawley
On: Tue 01/04/2005 at 16:38

Category:  None
Priority:  9 - Immediate
Resolution:  None
Privacy:  Public
Assigned to:  None
Originator Email:  
Status:  Open


Summary:  serious race condition in java.lang.VMThread.create(...)

Original Submission:  There is a nasty race condition in the VMThread.create
that bites on Kissme.  The CVS version of the method
creates the VMThread instance, calls vmThread.start()
to get it going, and finally sets the Thread object's 
vmThread attribute.  If the child thread immediately
calls (say) Thread.current().sleep(...), it dies on
Kissme with a NullPointerException.  The sleep call 
tries to us the Thread's vmThread attribute, which
hasn't yet been assigned.

This patch fixes the problem by setting the vmThread
attribute BEFORE calling vmThread.start(...).





File Attachments
-------------------

-------------------------------------------------------
Date: Tue 01/04/2005 at 16:38  Name: diffs  Size: 833B   By: crawley

http://savannah.gnu.org/patch/download.php?item_id=3612&amp;item_file_id=3992






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<http://savannah.gnu.org/patch/?func=detailitem&item_id=3612>

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