Module openj9.dtfj

Package com.ibm.j9ddr.vm29.tools.ddrinteractive.commands

Class SetVMCommand

java.lang.Object

com.ibm.j9ddr.tools.ddrinteractive.Command

com.ibm.j9ddr.vm29.tools.ddrinteractive.commands.SetVMCommand

All Implemented Interfaces:

ICommand

public class SetVMCommand
extends Command

Nested Class Summary

Nested classes/interfaces declared in class com.ibm.j9ddr.tools.ddrinteractive.Command

Command.CommandDescription

Field Summary

Fields declared in class com.ibm.j9ddr.tools.ddrinteractive.Command

nl

Constructor Summary

Constructors

Constructor	Description
SetVMCommand()	Constructor.

Method Summary

Modifier and Type	Method	Description
void	run(String command, String[] args, Context context, PrintStream out)	Runs the !

Methods declared in class com.ibm.j9ddr.tools.ddrinteractive.Command

addCommand, addSubCommand, dbgFindPatternInRange, getCommandDescriptions, getCommandNames, printDetailedHelp, recognises

Methods declared in class java.lang.Object

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

Constructor Details

SetVMCommand

public SetVMCommand()

Constructor. It adds the command info into !j9help menu

Method Details

run

public void run(String command,
 String[] args,
 Context context,
 PrintStream out)
         throws DDRInteractiveCommandException

Runs the !setvm command. 1. Checks whether correct number of args passed which is 1. 2. If condition 1 is successful, checks whether the passed arg is a valid integer, decimal or hexadecimal. 3. If condition 2 is successful, checks whether the address (only arg) is a valid J9JavaVM address. 4. If condition 3 is unsuccessful, checks whether the address is a valid J9VMThread address. If any of the condition 3 or 4 succeeds, then cachedVM is set to new address. Otherwise, it prints error msg.

Parameters:

command - DDR extension command which is setVM for this extension.

args - arguments passed with the command

context - current context that DDR is running on.

out - PrintStream to print the user messages.

Throws:

DDRInteractiveCommandException - If there is any problem running the command (incorrect usage, CorruptData etc.)