Class VmCheckCommand

java.lang.Object

com.ibm.j9ddr.tools.ddrinteractive.Command

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

All Implemented Interfaces:

ICommand

public class VmCheckCommand
extends Command

Nested Class Summary

Nested classes/interfaces declared in class Command

Command.CommandDescription

Modifier and Type	Class	Description
protected class	Command.CommandDescription

Constructor Summary

Constructors

Constructor	Description
VmCheckCommand()

Method Summary

Modifier and Type	Method	Description
com.ibm.j9ddr.vm29.pointer.generated.J9MemorySegmentPointer	findSegmentInClassLoaderForAddress(com.ibm.j9ddr.vm29.pointer.generated.J9ClassLoaderPointer classLoader, com.ibm.j9ddr.vm29.pointer.generated.J9ROMClassPointer romClassPointer)	Based on vmchk/checkclasses.c function: findSegmentInClassLoaderForAddress This method searches classloader's segments to find out on which segment this ROMClass lays in.
void	run(String command, String[] args, Context context, PrintStream out)	Executes the command

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

VmCheckCommand

public VmCheckCommand()

Method Details

run

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

Description copied from interface: ICommand

Executes the command

Parameters:

command - Command string e.g. !j9x

args - Arguments for command

context - Context to work in

out - PrintStream to write command output on

Throws:

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

findSegmentInClassLoaderForAddress

public com.ibm.j9ddr.vm29.pointer.generated.J9MemorySegmentPointer findSegmentInClassLoaderForAddress(com.ibm.j9ddr.vm29.pointer.generated.J9ClassLoaderPointer classLoader,
 com.ibm.j9ddr.vm29.pointer.generated.J9ROMClassPointer romClassPointer)
                                                                                               throws CorruptDataException

Based on vmchk/checkclasses.c function: findSegmentInClassLoaderForAddress This method searches classloader's segments to find out on which segment this ROMClass lays in.

Parameters:

classLoader - Classloader that romclass is being searched

romClassPointer - ROMClass that is searched in classloader segments

Returns:

Classloader segment which has this romclass, otherwise null.

Throws:

CorruptDataException