net.bytebuddy.agent

Class VirtualMachine.ForHotSpot

java.lang.Object

net.bytebuddy.agent.VirtualMachine.ForHotSpot

All Implemented Interfaces:

VirtualMachine

Direct Known Subclasses:

VirtualMachine.ForHotSpot.OnUnix

Enclosing interface:

VirtualMachine

public abstract static class VirtualMachine.ForHotSpot
extends Object
implements VirtualMachine

A virtual machine implementation for a HotSpot VM or any compatible VM.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	VirtualMachine.ForHotSpot.OnUnix A virtual machine implementation for a HotSpot VM running on Unix.

Nested classes/interfaces inherited from interface net.bytebuddy.agent.VirtualMachine

VirtualMachine.ForHotSpot

Field Summary

Fields

Modifier and Type	Field and Description
protected String	processId The target process's id.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ForHotSpot(String processId) Creates a new HotSpot-compatible VM implementation.

Method Summary

Modifier and Type	Method and Description
protected abstract void	connect() Connects to the target VM.
void	loadAgent(String jarFile, String argument) Loads an agent into the represented virtual machine.
protected abstract int	read(byte[] buffer) Reads from the communication channel.
protected abstract void	write(byte[] buffer) Writes to the communication channel.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.bytebuddy.agent.VirtualMachine

detach

Field Detail

processId

protected final String processId

The target process's id.

Constructor Detail

ForHotSpot

protected ForHotSpot(String processId)

Creates a new HotSpot-compatible VM implementation.

Parameters:

processId - The target process's id.

Method Detail

loadAgent

public void loadAgent(String jarFile,
                      String argument)
               throws IOException

Loads an agent into the represented virtual machine.

Specified by:

loadAgent in interface VirtualMachine

Parameters:

jarFile - The jar file to attach.

argument - The argument to provide or null if no argument should be provided.

Throws:

IOException - If an I/O exception occurs.

connect

protected abstract void connect()
                         throws IOException

Connects to the target VM.

Throws:

IOException - If an I/O exception occurs.

read

protected abstract int read(byte[] buffer)
                     throws IOException

Reads from the communication channel.

Parameters:

buffer - The buffer to read into.

Returns:

The amount of bytes read.

Throws:

IOException - If an I/O exception occurs.

write

protected abstract void write(byte[] buffer)
                       throws IOException

Writes to the communication channel.

Parameters:

buffer - The buffer to write from.

Throws:

IOException - If an I/O exception occurs.