Module openj9.dtfj

Package com.ibm.dtfj.image.javacore

Class JCImageThread

java.lang.Object

com.ibm.dtfj.image.javacore.JCImageThread

All Implemented Interfaces:

ImageThread

public class JCImageThread
extends Object
implements ImageThread

Constructor Summary

Constructors

Constructor	Description
JCImageThread(ImagePointer nativeThreadID)

Method Summary

Modifier and Type	Method	Description
void	addImageStackFrame(ImageStackFrame stackFrame)	NOT in DTFJ
void	addImageStackSection(ImageSection stackSection)	NOT in DTFJ Add a stack section for this thread.
void	addProperty(Object key, Object value)
void	addRegister(ImageRegister reg)	NOT in DTFJ
String	getID()	Fetch a unique identifier for the thread.
ImagePointer	getInternalID()	NON-DTFJ.
Properties	getProperties()	Get the OS-specific properties for this thread.
Iterator	getRegisters()	Get the register contents.
Iterator	getStackFrames()	Not available in javacore
Iterator	getStackSections()	Get the set of image sections which make up the stack.
ImagePointer	getSystemThreadID()	NON-DTFJ.
void	setSystemThreadID(ImagePointer systemThreadID)	NON-DTFJ.

Methods declared in class java.lang.Object

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

Constructor Details

JCImageThread

public JCImageThread(ImagePointer nativeThreadID)
              throws JCInvalidArgumentsException

Parameters:

nativeThreadID -

Throws:

JCInvalidArgumentsException

Method Details

getID

public String getID()
             throws CorruptDataException

Description copied from interface: ImageThread

Fetch a unique identifier for the thread. In many operating systems, threads have more than one identifier (e.g. a thread id, a handle, a pointer to VM structures associated with the thread). In this case, one of these identifiers will be chosen as the canonical one. The other identifiers would be returned by getProperties()

Specified by:

getID in interface ImageThread

Returns:

a process-wide identifier for the thread (e.g. a tid number)

Throws:

CorruptDataException

getProperties

public Properties getProperties()

Description copied from interface: ImageThread

Get the OS-specific properties for this thread.

Specified by:

getProperties in interface ImageThread

Returns:

a table of OS-specific properties for this thread. Values which are commonly available include

• "priority" -- the priority of the thread
• "policy" -- the scheduling policy of the thread

addProperty

public void addProperty(Object key,
 Object value)

Parameters:

key -

value -

getRegisters

public Iterator getRegisters()

Description copied from interface: ImageThread

Get the register contents.

Specified by:

getRegisters in interface ImageThread

Returns:

an iterator to iterate over the state of the CPU registers when the image was created. The collection may be empty if the register state is not available for this thread. If the CPU supports partial registers (e.g. AH, AL, AX, EAX, RAX on AMD64), only the largest version of the register will be included

See Also:

• ImageRegister

getStackSections

public Iterator getStackSections()

Description copied from interface: ImageThread

Get the set of image sections which make up the stack.

Specified by:

getStackSections in interface ImageThread

Returns:

a collection of ImageSections which make up the stack. On most platforms this consists of a single entry, but on some platforms the thread's stack may consist of non-contiguous sections

See Also:

• ImageSection
• CorruptData

getStackFrames

public Iterator getStackFrames()
                        throws DataUnavailable

Not available in javacore

Specified by:

getStackFrames in interface ImageThread

Returns:

an iterator to walk the native stack frames in order from top-of-stack (that is, the most recent frame) to bottom-of-stack. Throws DataUnavailable if native stack frames are not available on this platform.

Throws:

DataUnavailable - If native stack frames are not available on this platform

See Also:

• ImageStackFrame
• CorruptData

addImageStackFrame

public void addImageStackFrame(ImageStackFrame stackFrame)

NOT in DTFJ

Parameters:

stackFrame -

addImageStackSection

public void addImageStackSection(ImageSection stackSection)

NOT in DTFJ Add a stack section for this thread. Duplicates are not removed. Do NOT use this outside the building process.

Parameters:

stackSection -

getInternalID

public ImagePointer getInternalID()

NON-DTFJ. Used internally as it bypasses the exception, since due to internal implementation, an exception thrown when the id is not set does not necessarily mean an internal building error. Do NOT use this outside the building process.

setSystemThreadID

public void setSystemThreadID(ImagePointer systemThreadID)

NON-DTFJ. For building purposes only. Don't use as part of DTFJ.

Parameters:

systemThreadID -

getSystemThreadID

public ImagePointer getSystemThreadID()

NON-DTFJ. For building purposes only. Don't use as part of DTFJ.

Returns:

system thread id or null if not set.

addRegister

public void addRegister(ImageRegister reg)

NOT in DTFJ

Parameters:

reg - register