Module openj9.dtfj

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

Class SnapBaseCommand

java.lang.Object

com.ibm.j9ddr.tools.ddrinteractive.Command

com.ibm.j9ddr.tools.ddrinteractive.commands.SnapBaseCommand

All Implemented Interfaces:

ICommand

Direct Known Subclasses:

SnapFormatCommand, SnapTraceCommand

public abstract class SnapBaseCommand
extends Command

Debug extension superclass to extract trace buffers from a core dump so they can be dumped or formatted.

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
SnapBaseCommand()

Method Summary

Modifier and Type	Method	Description
protected void	extractTraceData(Context context, PrintStream out)	Used by subclasses to actually walk the trace data in the core.
String	getCStringAtAddress(IProcess process, long address)
String	getCStringAtAddress(IProcess process, long address, long maxLength)
protected abstract void	writeBytesToTrace(Context context, long address, int bufferSize, PrintStream out)
protected abstract void	writeHeaderBytesToTrace(Context context, byte[] headerBytes, PrintStream out)

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

addCommand, addSubCommand, dbgFindPatternInRange, printDetailedHelp

Methods declared in class java.lang.Object

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

Methods declared in interface com.ibm.j9ddr.tools.ddrinteractive.ICommand

getCommandDescriptions, getCommandNames, recognises, run

Constructor Detail

SnapBaseCommand

public SnapBaseCommand()

Method Detail

writeHeaderBytesToTrace

protected abstract void writeHeaderBytesToTrace(Context context,
                                                byte[] headerBytes,
                                                PrintStream out)

writeBytesToTrace

protected abstract void writeBytesToTrace(Context context,
                                          long address,
                                          int bufferSize,
                                          PrintStream out)

extractTraceData

protected void extractTraceData(Context context,
                                PrintStream out)
                         throws DDRInteractiveCommandException

Used by subclasses to actually walk the trace data in the core. Calls writeHeaderBytesToTrace and writeBytesToTrace to actually process the trace data.

Parameters:

context -

out -

Throws:

DDRInteractiveCommandException

getCStringAtAddress

public String getCStringAtAddress(IProcess process,
                                  long address)
                           throws CorruptDataException

Throws:

CorruptDataException

getCStringAtAddress

public String getCStringAtAddress(IProcess process,
                                  long address,
                                  long maxLength)
                           throws CorruptDataException

Throws:

CorruptDataException