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 Command

Command.CommandDescription

Modifier and Type	Class	Description
protected class	Command.CommandDescription

Field Summary

Fields declared in class Command

nl

Modifier and Type	Field	Description
protected static final String	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 Command

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

Modifier and Type	Method	Description
Command.CommandDescription	addCommand(String name, String argDescription, String helpDescription)
void	addSubCommand(Command.CommandDescription command, String name, String argDescription, String helpDescription)
protected long	dbgFindPatternInRange(Context context, byte[] pattern, int patternAlignment, long startSearchFrom, BigInteger bytesToSearch)
Collection<String>	getCommandDescriptions()
Set<String>	getCommandNames()
void	printDetailedHelp(PrintStream out)	This prints the detailed help for the command by listing all the names that this command can be invoked by and also any sub commands that have been defined.
boolean	recognises(String command, Context context)	Method used by the DDR Interactive engine to decide whether this command matches the command passed in by the user

Methods declared in class 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.)