[Mono-devel-list] C# Threading : libgcc_s.so.1 must be installed for pthread_cancel to work

[prashanth.kalvala at wipro.com]

Hi,

We have mono 1.1.7 installed on Redhat Linux version 9.0. We have implemented a basic threading code in C#. The code is attached at the end of the mail.

The output of the code is as follows:

The Main() thread calls this after starting the new InstanceCaller thread.
The Main () thread calls this after starting the new StaticCaller threads.
You are Back in InstanceMethod.Running on Thread A

libgcc_s.so.1 must be installed for pthread_cancel to work

We get an error something related to pthread_cancel.

We wrote a sample code in C which invokes pthread_cancel. The program works fine.

We have the following under our PATH and LD_LIBRARY_PATH respectively

/usr/bin:/usr/bin:/usr/bin:/usr/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/lib:/usr/lib:.

.:/usr/tibco/tibrv/lib:/lib:/usr/lib

we have libgcc_s.so.1 already installed.

Please suggest us what we need to do.

Best Regards
Prashanth Kalvala

-----------
Thread.cs
-----------
using System;

using System.Threading;

namespace Test

{

        public class Simple

        {



                // The method that will be called when the thread is started.

                public void InstanceMethod()

                {

                        try

                        {

                                // Pause for a moment to provide a delay to make threads more apparent.

                                Thread. Sleep(3000);

                                Console.WriteLine ("You are Back in InstanceMethod.Running on Thread A");

                              

                        }

                        catch(Exception ex)

                        {



                                Console.WriteLine ("asdasdadasd");

                        }



                      

                }



                public static void StaticMethod()

                {

                        Console.WriteLine("You are in StaticMethod. Running on Thread B.");

                        // Pause for a moment to provide a delay to make threads more apparent.

                        Console.WriteLine("Thread B Going to Sleep Zzzzzzzz");



                        Thread.Sleep(5000);

                        Console.WriteLine("You are back in static method. Running on Thread B");

                }



                public void Run()

                {



                        // Create the thread object, passing in the

                        // serverObject.InstanceMethod method using a ThreadStart delegate.

                        Thread InstanceCaller = new Thread(new ThreadStart(InstanceMethod));



                        // Start the thread.

                        InstanceCaller.Start();



                        Console.WriteLine("The Main() thread calls this " +  "after starting the new InstanceCaller thread.");

                }







                public static int Main(String[] args)

                {

                        Console.WriteLine ("Thread Simple Sample");   

                      

                        new Simple().Run();



                        // Create the thread object, passing in the

                        // serverObject.StaticMethod method using a ThreadStart delegate.

                        //Thread StaticCaller = new Thread(new ThreadStart(ServerClass.StaticMethod));

                        // Start the thread.

                        //StaticCaller.Start();

                        Console.WriteLine("The Main () thread calls this " + "after starting the new StaticCaller threads.");

                        return 0;

                }

        }

}





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