Package fr.ens.biologie.genomique.eoulsan.util.locker

Class ExecLock

java.lang.Object

fr.ens.biologie.genomique.eoulsan.util.locker.ExecLock

All Implemented Interfaces:

Locker

public class ExecLock
extends Object
implements Locker

This class define a lock to prevent execution of a process simultaneously on multiples JVM.

Since:

1.1

Author:

Laurent Jourdren

Constructor Summary

Constructors

Constructor	Description
ExecLock(String execName)	Public constructor.
ExecLock(String execName, Path tmpDir)	Public constructor.

Method Summary

Modifier and Type	Method	Description
int	getProcessesWaiting()	Get the number of processes waiting.
void	lock()	Wait the token and then lock the resource.
void	unlock()	Unlock the resource.

Methods inherited from class java.lang.Object

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

Constructor Details

ExecLock

public ExecLock(String execName,
 Path tmpDir)

Public constructor.

Parameters:

execName - resource name

tmpDir - temporary directory where to create lock files

ExecLock

public ExecLock(String execName)

Public constructor.

Parameters:

execName - resource name

Method Details

lock

public void lock()

Description copied from interface: Locker

Wait the token and then lock the resource.

Specified by:

lock in interface Locker

unlock

public void unlock()

Description copied from interface: Locker

Unlock the resource.

Specified by:

unlock in interface Locker

getProcessesWaiting

public int getProcessesWaiting()

Get the number of processes waiting.

Returns:

the number of process waiting