Module openj9.dtfjview

Package com.ibm.jvm.dtfjview.commands

Class HeapdumpCommand

java.lang.Object

com.ibm.java.diagnostics.utils.commands.BaseCommand

com.ibm.jvm.dtfjview.commands.BaseJdmpviewCommand

com.ibm.jvm.dtfjview.commands.HeapdumpCommand

All Implemented Interfaces:

ICommand

public class HeapdumpCommand
extends BaseJdmpviewCommand

Command for dumping heapdumps from DTFJ. Contains the heap-walking logic for building the reference tree. The code for writing the heapdumps (both PHD and classic) is in the com.ibm.jvm.heapdump package.

Nested Class Summary

Nested classes/interfaces declared in class com.ibm.jvm.dtfjview.commands.BaseJdmpviewCommand

BaseJdmpviewCommand.ArtifactType

Field Summary

Fields

Modifier and Type	Field	Description
static final String	COMMAND_NAME
static final String	DESCRIPTION
static final String	LONG_DESCRIPTION

Fields declared in class com.ibm.jvm.dtfjview.commands.BaseJdmpviewCommand

ctx, hexfmt, logger, out

Fields declared in class com.ibm.java.diagnostics.utils.commands.BaseCommand

COMMAND_FORMAT, config, nl, SUBCOMMAND_FORMAT

Constructor Summary

Constructors

Constructor	Description
HeapdumpCommand()

Method Summary

Modifier and Type	Method	Description
void	doCommand(String[] args)
void	printDetailedHelp(PrintStream out)	Print detailed help for a given command
void	run(String command, String[] args, IContext context, PrintStream out)	Executes the command

Methods declared in class com.ibm.jvm.dtfjview.commands.BaseJdmpviewCommand

decodeThreadState, getArtifactType, handleException, initCommand, toHexString, toHexString, toHexString, toHexString, toHexStringAddr, toLong, toString, toString

Methods declared in class com.ibm.java.diagnostics.utils.commands.BaseCommand

addCommand, addSubCommand, getCommandDescriptions, getCommandNames, getConfig, recognises, setConfig

Methods declared in class java.lang.Object

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

Field Details

COMMAND_NAME

public static final String COMMAND_NAME

See Also:

• Constant Field Values

DESCRIPTION

public static final String DESCRIPTION

See Also:

• Constant Field Values

LONG_DESCRIPTION

public static final String LONG_DESCRIPTION

See Also:

• Constant Field Values

Constructor Details

HeapdumpCommand

public HeapdumpCommand()

Method Details

run

public void run(String command,
 String[] args,
 IContext context,
 PrintStream out)
         throws CommandException

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:

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

doCommand

public void doCommand(String[] args)

printDetailedHelp

public void printDetailedHelp(PrintStream out)

Description copied from class: BaseJdmpviewCommand

Print detailed help for a given command

Specified by:

printDetailedHelp in class BaseJdmpviewCommand

Parameters:

out - stream to write the output to