[Mono-bugs] [Bug 55749][Maj] New - Another deadlock when running static constructors

bugzilla-daemon@bugzilla.ximian.com bugzilla-daemon@bugzilla.ximian.com
Thu, 18 Mar 2004 06:49:14 -0500 (EST)


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Changed by lluis@ximian.com.

http://bugzilla.ximian.com/show_bug.cgi?id=55749

--- shadow/55749	2004-03-18 06:49:14.000000000 -0500
+++ shadow/55749.tmp.21025	2004-03-18 06:49:14.000000000 -0500
@@ -0,0 +1,76 @@
+Bug#: 55749
+Product: Mono: Runtime
+Version: unspecified
+OS: Red Hat 9.0
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Major
+Component: misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: lluis@ximian.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Another deadlock when running static constructors
+
+The following test case deadlocks. It seems that the thread that runs the
+static constructor of the Broken class gets stuck inside the constructor,
+thus locking all other threads.
+
+Notice that the test case works sometimes, so you may need to run it
+several times before geting the deadlock.
+
+using System;
+using System.Threading;
+
+namespace BenchSoap
+{
+	public class Test
+	{
+		static int threadNumber = 10;
+
+		public static void Main ()
+		{
+			for (int i = 0; i < threadNumber; i++)
+			{
+				Thread t = new Thread (new ThreadStart (Work));
+				t.Start ();
+				Console.WriteLine ("started " + i);
+			}
+			Console.WriteLine ("no deadlock");
+		}
+
+		static void Work()
+		{
+			int n=0;
+			while (n<2)
+			{
+				try {
+					Console.WriteLine (n);
+					Broken.Doit ();
+					n++;
+				}
+				catch
+				{
+				}
+			}
+		}
+	}
+	
+	public class Broken
+	{
+		static Broken ()
+		{
+			Console.WriteLine ("enter constructor");
+			for (int n=0; n<100000000; n++);
+			Console.WriteLine ("exit constructor");
+		}
+		
+		public static void Doit ()
+		{
+		}
+	}
+}