com.jn.langx.commandline

类 ShutdownHookProcessDestroyer

java.lang.Object

com.jn.langx.commandline.ShutdownHookProcessDestroyer

所有已实现的接口:

InstructionSequenceDestroyer, Runnable

public class ShutdownHookProcessDestroyer
extends Object
implements InstructionSequenceDestroyer, Runnable

Destroys all registered Processes when the VM exits.

构造器概要

构造器

构造器和说明
ShutdownHookProcessDestroyer() Constructs a ProcessDestroyer and obtains Runtime.addShutdownHook() and Runtime.removeShutdownHook() through reflection.

方法概要

限定符和类型	方法和说明
boolean	add(InstructionSequence process) Returns true if the specified Process was successfully added to the list of processes to destroy upon VM exit.
boolean	isAddedAsShutdownHook() Returns whether or not the ProcessDestroyer is registered as as shutdown hook
boolean	remove(InstructionSequence process) Returns true if the specified Process was successfully removed from the list of processes to destroy upon VM exit.
void	run() Invoked by the VM when it is exiting.
int	size() Returns the number of registered processes.

从类继承的方法 java.lang.Object

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

构造器详细资料

ShutdownHookProcessDestroyer

public ShutdownHookProcessDestroyer()

Constructs a ProcessDestroyer and obtains Runtime.addShutdownHook() and Runtime.removeShutdownHook() through reflection. The ProcessDestroyer manages a list of processes to be destroyed when the VM exits. If a process is added when the list is empty, this ProcessDestroyer is registered as a shutdown hook. If removing a process results in an empty list, the ProcessDestroyer is removed as a shutdown hook.

方法详细资料

isAddedAsShutdownHook

public boolean isAddedAsShutdownHook()

Returns whether or not the ProcessDestroyer is registered as as shutdown hook

返回:

true if this is currently added as shutdown hook

add

public boolean add(InstructionSequence process)

Returns true if the specified Process was successfully added to the list of processes to destroy upon VM exit.

指定者:

add 在接口中 InstructionSequenceDestroyer

参数:

process - the process to add

返回:

true if the specified Process was successfully added

remove

public boolean remove(InstructionSequence process)

Returns true if the specified Process was successfully removed from the list of processes to destroy upon VM exit.

指定者:

remove 在接口中 InstructionSequenceDestroyer

参数:

process - the process to remove

返回:

true if the specified Process was successfully removed

size

public int size()

Returns the number of registered processes.

指定者:

size 在接口中 InstructionSequenceDestroyer

返回:

the number of register process

run

public void run()

Invoked by the VM when it is exiting.

指定者:

run 在接口中 Runnable