Module openj9.dtfj

Package com.ibm.dtfj.java.j9

Class JavaRuntime

java.lang.Object

com.ibm.dtfj.java.j9.JavaRuntime

All Implemented Interfaces:

JavaRuntime, ManagedRuntime

public class JavaRuntime
extends Object
implements JavaRuntime

Constructor Summary

Constructors

Constructor	Description
JavaRuntime(ImageProcess containingProc, ImagePointer baseAddress, String runtimeVersion)

Method Summary

Modifier and Type	Method	Description
void	addClass(JavaAbstractClass theClass)
void	addClassLoader(JavaClassLoader loader)
void	addHeap(JavaHeap heap)
void	addHeapRoot(JavaReference heapRoot)
void	addMethodForID(JavaMethod method, long id)
void	addMonitor(JavaMonitor monitor)
void	addSpecialObject(JavaObject obj)
void	addThread(JavaThread thread, long blockedOnMonitor, long waitingOnMonitor)	Adds a JavaThread to the runtime along with optional IDs of monitors that it is blocked on or waiting on
int	bytesPerPointer()	A helper method required by some of the structures hanging off of the VM.
JavaVMInitArgs	createJavaVMInitArgs(int version, boolean ignoreUnrecognized)
protected Iterator	getClasses()
JavaClass	getClassForID(long classID)
JavaClassLoader	getClassLoaderForID(long loaderID)
JavaObject	getSpecialObject(ImagePointer address)
String	getSystemProperty(String key, String defaultValue)
JavaMethod	methodForID(long method)
ImageThread	nativeThreadForID(long nativeID)
ImagePointer	pointerInAddressSpace(long id)	Since a JavaVM cannot span address spaces, use the VM's container address space to build this pointer, given the raw ID
void	setSystemProperty(String key, String value)
void	setTraceBufferForName(TraceBuffer buffer, String key)

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.java.JavaRuntime

equals, getCompiledMethods, getHeapRoots, getHeaps, getJavaClassLoaders, getJavaVM, getJavaVMInitArgs, getJITProperties, getMemoryCategories, getMemorySections, getMonitors, getObjectAtAddress, getStartTime, getStartTimeNanos, getSystemProperty, getThreads, getTraceBuffer, hashCode, isJITEnabled

Methods declared in interface com.ibm.dtfj.runtime.ManagedRuntime

getFullVersion, getVersion

Constructor Detail

JavaRuntime

public JavaRuntime(ImageProcess containingProc,
                   ImagePointer baseAddress,
                   String runtimeVersion)

Method Detail

addClass

public void addClass(JavaAbstractClass theClass)

addClassLoader

public void addClassLoader(JavaClassLoader loader)

getClassForID

public JavaClass getClassForID(long classID)

getClassLoaderForID

public JavaClassLoader getClassLoaderForID(long loaderID)

addMonitor

public void addMonitor(JavaMonitor monitor)

addHeap

public void addHeap(JavaHeap heap)

addHeapRoot

public void addHeapRoot(JavaReference heapRoot)

addThread

public void addThread(JavaThread thread,
                      long blockedOnMonitor,
                      long waitingOnMonitor)

Adds a JavaThread to the runtime along with optional IDs of monitors that it is blocked on or waiting on

Parameters:

thread - The JavaThread to add to the runtime

blockedOnMonitor - The ID of the monitor that this thread is blocked on (0 if it is not blocked)

waitingOnMonitor - The ID of the monitor that this thread is waiting on (0 if it is not waiting)

setTraceBufferForName

public void setTraceBufferForName(TraceBuffer buffer,
                                  String key)

getSystemProperty

public String getSystemProperty(String key,
                                String defaultValue)

setSystemProperty

public void setSystemProperty(String key,
                              String value)

pointerInAddressSpace

public ImagePointer pointerInAddressSpace(long id)

Since a JavaVM cannot span address spaces, use the VM's container address space to build this pointer, given the raw ID

Parameters:

id -

Returns:

nativeThreadForID

public ImageThread nativeThreadForID(long nativeID)

methodForID

public JavaMethod methodForID(long method)

addMethodForID

public void addMethodForID(JavaMethod method,
                           long id)

createJavaVMInitArgs

public JavaVMInitArgs createJavaVMInitArgs(int version,
                                           boolean ignoreUnrecognized)

bytesPerPointer

public int bytesPerPointer()

A helper method required by some of the structures hanging off of the VM. Returns the number of bytes required to express a native pointer on the VM target platform

Returns:

4 or 8, depending on the pointer size of the target platform

getClasses

protected Iterator getClasses()

addSpecialObject

public void addSpecialObject(JavaObject obj)

getSpecialObject

public JavaObject getSpecialObject(ImagePointer address)