sun.jvm.hotspot.compiler

Class OopMapSet

java.lang.Object

sun.jvm.hotspot.runtime.VMObject

sun.jvm.hotspot.compiler.OopMapSet

public class OopMapSet
extends VMObject

Field Summary

Fields inherited from class sun.jvm.hotspot.runtime.VMObject

addr

Constructor Summary

Constructors

Constructor and Description
OopMapSet(Address addr)

Method Summary

Modifier and Type	Method and Description
static void	allDo(Frame fr, CodeBlob cb, RegisterMap regMap, OopMapVisitor visitor, boolean debugging) Note that there are 4 required AddressVisitors: one for oops, one for derived oops, one for values, and one for dead values
OopMap	findMapAtOffset(long pcOffset, boolean debugging)
OopMap	getMapAt(int index) returns the OopMap at a given index
long	getSize() Returns the number of OopMaps in this OopMapSet
static void	oopsDo(Frame fr, CodeBlob cb, RegisterMap regMap, AddressVisitor oopVisitor, boolean debugging) Visitation -- iterates through the frame for a compiled method.
static void	updateRegisterMap(Frame fr, CodeBlob cb, RegisterMap regMap, boolean debugging) Update callee-saved register info for the following frame.

Methods inherited from class sun.jvm.hotspot.runtime.VMObject

equals, getAddress, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

OopMapSet

public OopMapSet(Address addr)

Method Detail

getSize

public long getSize()

Returns the number of OopMaps in this OopMapSet

getMapAt

public OopMap getMapAt(int index)

returns the OopMap at a given index

findMapAtOffset

public OopMap findMapAtOffset(long pcOffset,
                              boolean debugging)

oopsDo

public static void oopsDo(Frame fr,
                          CodeBlob cb,
                          RegisterMap regMap,
                          AddressVisitor oopVisitor,
                          boolean debugging)

Visitation -- iterates through the frame for a compiled method. This is a very generic mechanism that requires the Address to be dereferenced by the callee. Other, more specialized, visitation mechanisms are given below.

allDo

public static void allDo(Frame fr,
                         CodeBlob cb,
                         RegisterMap regMap,
                         OopMapVisitor visitor,
                         boolean debugging)

Note that there are 4 required AddressVisitors: one for oops, one for derived oops, one for values, and one for dead values

updateRegisterMap

public static void updateRegisterMap(Frame fr,
                                     CodeBlob cb,
                                     RegisterMap regMap,
                                     boolean debugging)

Update callee-saved register info for the following frame. Should only be called in non-core builds.