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Changed by [EMAIL PROTECTED] http://bugzilla.ximian.com/show_bug.cgi?id=79063 --- shadow/79063 2006-08-11 20:19:26.000000000 -0400 +++ shadow/79063.tmp.7402 2006-08-11 20:19:26.000000000 -0400 @@ -0,0 +1,88 @@ +Bug#: 79063 +Product: Mono: Runtime +Version: 1.1 +OS: SUSE 9.2 +OS Details: +Status: NEW +Resolution: +Severity: +Priority: Minor +Component: io-layer +AssignedTo: [EMAIL PROTECTED] +ReportedBy: [EMAIL PROTECTED] +QAContact: [EMAIL PROTECTED] +TargetMilestone: --- +URL: +Cc: +Summary: Occasional deadlock when running external programs + +Description of Problem: +There appears to be a small chance that when external processes are run +simultaneously (via System.Diagnostics.Process.Start), a deadlock will occur. + + +Steps to reproduce the problem: +using System; +using System.Diagnostics; +using System.Threading; + +namespace Test { + class Test { + static void Main() { + for( int i = 0; i < 5; i++ ) { + Thread empty = new Thread( new ThreadStart( StartProcess ) ); + empty.Start(); + } + + Thread.Sleep( -1 ); + } + + static int __processIter = 0; + + static void StartProcess() { + for( ;; ) { + ProcessStartInfo info = new ProcessStartInfo( "/bin/echo", + "\"I'm hen-er-y the 8th I am..." + +Interlocked.Increment( ref __processIter ).ToString() + "\"" ); + info.UseShellExecute = false; + info.RedirectStandardOutput = true; + + Process process = Process.Start( info ); + + Console.WriteLine( process.StandardOutput.ReadLine() ); + + process.WaitForExit(); + process.Dispose(); + } + } + } +} + +Actual Results: +The final lines of output might show: + +----- +I'm hen-er-y the 8th I am...3962 +I'm hen-er-y the 8th I am...3963 +I'm hen-er-y the 8th I am...3964 +I'm hen-er-y the 8th I am...3965 +I'm hen-er-y the 8th I am...3966 +I'm hen-er-y the 8th I am...3967 +I'm hen-er-y the 8th I am...3968 +I'm hen-er-y the 8th I am...3969 +I'm hen-er-y the 8th I am...3896 +----- + +Inevitably, the last /bin/echo instance will have a counter much less than +the ones before it. + + +Expected Results: +The program should output lines forever. + + +How often does this happen? +Seldom. It will often happen in the first 10000 iterations. + + +Additional Information: _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
