Module openj9.dtfj

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

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 com.ibm.j9ddr.tools.ddrinteractive.Command

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 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

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