[Mono-bugs] [Bug 64419][Maj] New - System.IO.File.Open deadlocks

bugzilla-daemon@bugzilla.ximian.com bugzilla-daemon@bugzilla.ximian.com
Fri, 27 Aug 2004 22:00:26 -0400 (EDT)

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Changed by banderso@novell.com.


--- shadow/64419	2004-08-27 22:00:26.000000000 -0400
+++ shadow/64419.tmp.23947	2004-08-27 22:00:26.000000000 -0400
@@ -0,0 +1,45 @@
+Bug#: 64419
+Product: Mono: Class Libraries
+Version: unspecified
+OS Details: NLD 1.6 (SLES9 core)
+Status: NEW   
+Severity: 008 One day
+Priority: Major
+Component: System
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: banderso@novell.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+Summary: System.IO.File.Open deadlocks
+Description of Problem:
+The iFolder team implemented a shared mutex by opening a known file and
+setting the FileShare to "None".  This mutex is hit by multiple threads
+within multiple processes.  After running for 4-10 hours, all threads will
+deadlock on the file open method.  Exactly three hours later Mono releases
+all threads.  We have seen this time and time again in our log files (the
+three hour release).  The open close sequence is surrounded by a Try
+Finally so we should never leave the sequence without closing the file. 
+Once this happens we usually have to delete the .wapi file to get our
+server running again.
+Steps to reproduce the problem:
+Actual Results:
+Expected Results:
+How often does this happen? 
+usually around 10 hours with three processes and 2-3 threads in each process.
+Additional Information:
+At this time, I don't have a test program to reproduce the problem.