Name: mc57594 Date: 02/28/97

1) The Process.waitFor() method sometimes returns before the subprocess has completed. I noticed this when I would sometimes get an exit status of 0 when it should have been 1.
I added some System.out.println statements and then saw errors.

###################

2) The code:
/**
 * class: ExecCmd.java
 *
 * A class for executing a command line executable.
 *
 * @version January 31, 1997
 * @author Andy Kowalski
 *
 */
 
import java.io.*;
 
class ExecCmd
{
  // Fields
  private String cmd;
  private int i;
 
  // Constructor
  public ExecCmd (String s)
  {
    cmd = s;
  }
 
  // Methods
  public int run () throws InterruptedException, IOException
  {
    try
      {
        Process child = Runtime.getRuntime().exec(cmd);
        try
          {
            i = child.waitFor();
            System.out.println ("waitFor = " + i + " ; " + "exitValue = " + child.exitValue());
            return i;
          }
        catch (InterruptedException e)
          {
            throw e;
          }
      }
    catch (IOException e)
      {
        throw e;
      }
 
  }
}

######################

3 and 4)
Added new request: /mss/ccc/e96123/raw/50megFileaa false
waitFor = 1 ; exitValue = 1
Exit Status = 1
Added new request: /mss/ccc/e96123/raw/50megFileaa false
java.lang.IllegalThreadStateException: process hasn't exited
        at java.lang.UNIXProcess.exitValue(UNIXProcess.java)
        at ExecCmd.run(ExecCmd.java:34)
        at TapeReq.run(TapeReq.java:149)

#######################

5) The command (cmd) that I am trying to execute can take minutes to complete.
======================================================================

[chamness 11/27/97]
Not clear what command user is trying to execute.
The above code snippet has been rewritten to create test case.
Bug does not exist in jdk1.1.4

import java.io.*;

class execCmd
{
  // Fields
  private String cmd;
  private int i;

    public static void main(String args[])
    {
        execCmd command = new execCmd(args[0]);
        int result=0;
        try
        {
            result = command.run();
        }
        catch(InterruptedException ie)
        {
            System.out.println(ie);
        }
        catch(IOException ioe)
        {
            System.out.println(ioe);
        }
        System.out.println("Result="+result);
    }
  // Constructor
  public execCmd (String s)
  {
    cmd = s;
  }
  // Methods
  public int run () throws InterruptedException, IOException
  {
    try
      {
        Process child = Runtime.getRuntime().exec(cmd);
        try
          {
            i = child.waitFor();
            System.out.println ("waitFor = " + i + " ; " + "exitValue = " +
child.exitValue());
            return i;
          }
        catch (InterruptedException e)
          {
            throw e;
          }
      }
    catch (IOException e)
      {
        throw e;
      }
  }
}