---- Reported by carlos@applianz.com 2006-01-10 13:22:36 MST ----

I have written an example that involves a two line shell script.
The shell script launches xcalc then returns the PID of xcalc.
The C# code launches the shell script, reads the PID and tries to do a
GetProcessByID. While right now everytime I run it the call has failed, I
have sometimes seen it retrieve the process just fine, although its always
less than 50% of the time.
I am using:
Mono JIT compiler version 1.1.12.1, (C) 2002-2005 Novell, Inc and
Contributors. www.mono-project.com
        TLS:           __thread
        GC:            Included Boehm (with typed GC)
        SIGSEGV      : normal

on Gentoo 64bit and I am logged in as root.

Here is the code:

========================================
using System;
using System.Diagnostics;

class Test{
	
	public static void Main(){
		while(true){
			
		ProcessStartInfo info = new ProcessStartInfo("test.sh");
		info.UseShellExecute = false;
		info.RedirectStandardOutput = true;
			Console.WriteLine("About to launch proc.");
		String err = Process.Start(info).StandardOutput.ReadLine();
			Console.WriteLine("Read output: " +err);
		try{
			int pid = Int32.Parse(err);
				Console.WriteLine("Parsed output");
			Process p = Process.GetProcessById(pid);
				Console.WriteLine("Got process by ID");
				if (p != null){
					Console.WriteLine("Told process to die");
					p.Kill();
					Console.WriteLine("Done killing process");
				}else{
					throw new Exception("process was null");
				}
			}catch(Exception ex){
			Console.WriteLine(ex);
				return;
		}
		}
	}
}
========================================

Shell script:
========================================
#!/bin/sh
xcalc&
echo $!

========================================
output:
========================================
serenity test # mono ConsoleApplication2.exe
About to launch proc.
Read output: 12807
Parsed output
System.ArgumentException: Can't find process with ID 12807
in <0x000a9> System.Diagnostics.Process:GetProcessById (Int32 processId)
in <0x00100> Test:Main ()
serenity test # ps -ef | grep 12807
root     12807     1  0 11:16 pts/1    00:00:00 xcalc
root     12809 10934  0 11:16 pts/1    00:00:00 grep 12807

========================================



---- Additional Comments From dick@ximian.com 2006-01-10 15:20:18 MST ----

See https://bugzilla.novell.com/show_bug.cgi?id=MONO51445

I'd mark this as duplicate but for the "sometimes works" part - it
shouldn't ever with the current code.



---- Additional Comments From carlos@applianz.com 2006-01-10 15:28:13 MST ----

I gave that a little more thought. It was sometimes working on 1.1.9.2
but then I upgraded straight to 1.1.12 which is when it started
happening so much that I needed to write the little sample posted above. 

Is there anything anyone can do to help solve this problem? we were so
close to releasing our Linux code until this problem ocurred!



Unknown bug field "cf_op_sys_details" encountered while moving bug
   <cf_op_sys_details>Gentoo 64bit</cf_op_sys_details>
Unknown operating system unknown. Setting to default OS "Other".