com.pelzer.util
Class PID

java.lang.Object
  com.pelzer.util.PID

public class PID
extends Object

Wrapper around the unix concept of a process identifier. Only works if you're running on a system that has perl in the path.

Constructor Summary

PID()

Method Summary

static int	getCurrentPID()
static boolean	isPIDAlive(int pid) Returns true if the given pid is alive.
static void	main(String[] args)
static int	readPID(File pidFile)

Methods inherited from class java.lang.Object

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

Constructor Detail

PID

public PID()

Method Detail

getCurrentPID

public static int getCurrentPID()

Returns:

the pid of the current JVM. Requires that 'perl' be in the path otherwise returns -1

readPID

public static int readPID(File pidFile)
                   throws IOException,
                          NumberFormatException

Returns:

the parsed int read from the given pid file

Throws:

IOException

NumberFormatException

isPIDAlive

public static boolean isPIDAlive(int pid)
                          throws IOException

Returns true if the given pid is alive. Requires /bin/ps (ie UNIX)

Throws:

IOException

main

public static void main(String[] args)