Module openj9.dtfj

Package com.ibm.j9ddr.view.dtfj.image

Class J9DDRImage

java.lang.Object

com.ibm.j9ddr.view.dtfj.image.J9DDRImage

All Implemented Interfaces:

Image, ManagedImage

public class J9DDRImage
extends Object
implements ManagedImage

Image implementation that wraps a J9DDR ICore

Constructor Summary

Constructors

Constructor	Description
J9DDRImage(ICore coreFile)
J9DDRImage(URI source, ICore coreFile, ImageInputStream meta)

Method Summary

Modifier and Type	Method	Description
ICore	getCore()
long	getCreationTime()	Return the dump creation time.
long	getCreationTimeNanos()	Return the value of the system nanotime (high resolution timer) at dump creation time.
Properties	getProperties()	Return OS properties (as obtained by the JVM, no support in the core readers)
boolean	isClosed()

Methods declared in class java.lang.Object

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

Methods declared in interface com.ibm.dtfj.image.Image

close, getAddressSpaces, getHostName, getInstalledMemory, getIPAddresses, getProcessorCount, getProcessorSubType, getProcessorType, getSource, getSystemSubType, getSystemType, isTruncated

Methods declared in interface com.ibm.dtfj.utils.ManagedImage

getImageSource, setImageSource

Constructor Detail

J9DDRImage

public J9DDRImage(ICore coreFile)

J9DDRImage

public J9DDRImage(URI source,
                  ICore coreFile,
                  ImageInputStream meta)

Method Detail

getCore

public ICore getCore()

getCreationTime

public long getCreationTime()
                     throws DataUnavailable

Return the dump creation time. See JTC-JAT 92709, we now obtain this from a field in the J9RAS structure that is set by the JVM dump agent when the dump is triggered. If that is not available, we revert to obtaining the creation time via the core readers from a timestamp that the OS puts in the dump. This is supported in system dumps on Windows and zOS, but not Linux or AIX.

Specified by:

getCreationTime in interface Image

Returns:

long - dump creation time (milliseconds since 1970)

Throws:

DataUnavailable

getProperties

public Properties getProperties()

Return OS properties (as obtained by the JVM, no support in the core readers)

Specified by:

getProperties in interface Image

Returns:

Properties (may be empty)

isClosed

public boolean isClosed()

getCreationTimeNanos

public long getCreationTimeNanos()
                          throws DataUnavailable,
                                 CorruptDataException

Return the value of the system nanotime (high resolution timer) at dump creation time. See JTC-JAT 92709, we obtain this from a field in the J9RAS structure that is set by the JVM dump agent when the dump is triggered.

Specified by:

getCreationTimeNanos in interface Image

Returns:

long - system nanotime

Throws:

DataUnavailable - if the image creation time is not available

CorruptDataException - if the image creation time is corrupted