edu.illinois.ncsa.isda.softwareserver

Class TimedProcess

java.lang.Object

edu.illinois.ncsa.isda.softwareserver.TimedProcess

All Implemented Interfaces:

Runnable

public class TimedProcess
extends Object
implements Runnable

A process with a time limit. Allows a process to be executed pseudo-synchronously. A program can wait for such a process to return for some amount of time. Once the time elapses we return and assume the process has failed.

Author:

Kenton McHenry

Constructor Summary

Constructors

Constructor and Description
TimedProcess(Process p) Class constructor.
TimedProcess(Process p, boolean HANDLE_OUTPUT, boolean SHOW_OUTPUT) Class constructor.

Method Summary

Methods

Modifier and Type	Method and Description
String	getOutput() Get the process output (stdout and stderr).
static String	handleProcessOutput(Process process, boolean SHOW_OUTPUT) Handle the output of a process.
void	run() The starting point for the thread that will monitor the process.
boolean	waitFor(int n) Wait a specified number of milli-seconds for a process to complete.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TimedProcess

public TimedProcess(Process p)

Class constructor.

Parameters:

p - the process to monitor

TimedProcess

public TimedProcess(Process p,
            boolean HANDLE_OUTPUT,
            boolean SHOW_OUTPUT)

Class constructor.

Parameters:

p - the process to monitor

HANDLE_OUTPUT - true if the process output should be handled

SHOW_OUTPUT - true if the process output should be shown

Method Detail

getOutput

public String getOutput()

Get the process output (stdout and stderr).

Returns:

the process output

run

public void run()

The starting point for the thread that will monitor the process.

Specified by:

run in interface Runnable

waitFor

public boolean waitFor(int n)

Wait a specified number of milli-seconds for a process to complete.

Parameters:

n - the number of milli-seconds to wait for

Returns:

true if the process completed on its own

handleProcessOutput

public static String handleProcessOutput(Process process,
                         boolean SHOW_OUTPUT)

Handle the output of a process.

Parameters:

process - the process

SHOW_OUTPUT - true if the output should be printed

Returns:

the process output