org.zeroturnaround.process

Class AndProcess

java.lang.Object

org.zeroturnaround.process.AbstractProcess

org.zeroturnaround.process.CompositeProcess

org.zeroturnaround.process.AndProcess

All Implemented Interfaces:

SystemProcess

public class AndProcess
extends CompositeProcess

Represents multiple processes.

It tries to kill all child processes. If it fails to destroy any process it still tries to destroy other processes before actually throwing the initial error. isAlive() returns true if at least one of the processes is still alive. isAllAlive() returns true only if all processes are still alive.

If it has only one child it acts the same as invoking the same method directly on the child.

Field Summary

Fields inherited from class org.zeroturnaround.process.CompositeProcess

children

Fields inherited from class org.zeroturnaround.process.AbstractProcess

log

Constructor Summary

Constructors

Constructor and Description
AndProcess(List<? extends SystemProcess> children)

Method Summary

Modifier and Type	Method and Description
void	destroy(boolean forceful) Destroys the process either forcefully or gracefully according to the given option.
boolean	isAlive() Tests whether this process is alive.
boolean	isAllAlive()
void	waitFor() Causes the current thread to wait, if necessary, until this process has terminated.

Methods inherited from class org.zeroturnaround.process.CompositeProcess

getDescription, invokeDestroy, toString

Methods inherited from class org.zeroturnaround.process.AbstractProcess

destroyForcefully, destroyGracefully, waitFor

Methods inherited from class java.lang.Object

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

Constructor Detail

AndProcess

public AndProcess(List<? extends SystemProcess> children)

Method Detail

isAlive

public boolean isAlive()
                throws IOException,
                       InterruptedException

Description copied from interface: SystemProcess

Tests whether this process is alive.

This operation may take some time to finish.

Returns:

true if this process is alive, false if it is finished or not found.

Throws:

IOException - on IO error.

InterruptedException - if interrupted.

isAllAlive

public boolean isAllAlive()
                   throws IOException,
                          InterruptedException

Throws:

IOException

InterruptedException

waitFor

public void waitFor()
             throws InterruptedException

Description copied from interface: SystemProcess

Causes the current thread to wait, if necessary, until this process has terminated.

This method returns immediately if the process has already terminated. If the process has not yet terminated, the calling thread will be blocked until the process exits.

Throws:

InterruptedException - if interrupted.

destroy

public void destroy(boolean forceful)
             throws IOException,
                    InterruptedException

Description copied from class: AbstractProcess

Destroys the process either forcefully or gracefully according to the given option.

Note: The process may not terminate at all. i.e. isAlive() may return true for a any period after destroy() is called. This method may be chained to waitFor() if needed.

No error is thrown if the process was already terminated.

Specified by:

destroy in class AbstractProcess

Parameters:

forceful - true if the process must be destroyed forcefully (like kill -KILL), false if it must be destroyed gracefully (like kill -TERM).

Throws:

IOException - on IO error.

InterruptedException - if interrupted.