OpenJDK 27 · sun.jvm.hotspot.gc.shenandoah.ShenandoahHeapRegion

Field Summary

Modifier and Type	Field and Description
private static AddressField	BottomField
private static int	CSet
private static int	EmptyCommitted
private static int	EmptyUncommitted
private static AddressField	EndField
private ShenandoahHeap	heap
private static int	HumongousCont
private static int	HumongousStart
private static int	Pinned
private static int	PinnedCSet
private static int	PinnedHumongousStart
private static CIntegerField	RegionIndexField
private static CIntegerField	RegionSizeBytesField
private static CIntegerField	RegionSizeBytesShiftField
private static Field	RegionStateField
private static int	Regular
private static AddressField	TopField
private static int	Trash

Inherited from sun.jvm.hotspot.runtime.VMObject:: addr

Constructor Summary

Access	Constructor and Description
public	ShenandoahHeapRegion(Address addr)

Method Summary

Modifier and Type	Method and Description
public Address	bottom()
public Address	end()
public boolean	equals(Object other) Overrides sun.jvm.hotspot.runtime.VMObject.equals. Indicates whether some other object is "equal to" this one.
public List<MemRegion>	getLiveRegions() Implements sun.jvm.hotspot.gc.shared.LiveRegionsProvider.getLiveRegions.
private long	getObjectSize(Address rawPtr)
private void	handleCSetRegion(List<MemRegion> res)
private void	handleHumongousRegion(List<MemRegion> res)
private void	handleRegularRegion(List<MemRegion> res)
private boolean	hasForwardee(Address rawPtr)
public int	hashCode() Overrides sun.jvm.hotspot.runtime.VMObject.hashCode. Returns a hash code value for this object.
public long	index()
private static synchronized void	initialize(TypeDataBase db)
public static long	regionSizeBytes()
public static int	regionSizeBytesShift()
private int	regionState()
public void	setHeap(ShenandoahHeap heap)
public Address	top()

Inherited from sun.jvm.hotspot.runtime.VMObject:: getAddress toString

Field Detail

BottomField	back to summary
private static AddressField BottomField

CSet	back to summary
private static int CSet

EmptyCommitted	back to summary
private static int EmptyCommitted

EmptyUncommitted	back to summary
private static int EmptyUncommitted

EndField	back to summary
private static AddressField EndField

heap	back to summary
private ShenandoahHeap heap

HumongousCont	back to summary
private static int HumongousCont

HumongousStart	back to summary
private static int HumongousStart

Pinned	back to summary
private static int Pinned

PinnedCSet	back to summary
private static int PinnedCSet

PinnedHumongousStart	back to summary
private static int PinnedHumongousStart

RegionIndexField	back to summary
private static CIntegerField RegionIndexField

RegionSizeBytesField	back to summary
private static CIntegerField RegionSizeBytesField

RegionSizeBytesShiftField	back to summary
private static CIntegerField RegionSizeBytesShiftField

RegionStateField	back to summary
private static Field RegionStateField

Regular	back to summary
private static int Regular

TopField	back to summary
private static AddressField TopField

Trash	back to summary
private static int Trash

Constructor Detail

ShenandoahHeapRegion	back to summary
public ShenandoahHeapRegion(Address addr)

Method Detail

bottom	back to summary
public Address bottom()

end	back to summary
public Address end()

equals back to summary

equals	back to summary
public boolean equals(Object other) Overrides sun.jvm.hotspot.runtime.VMObject.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Annotations @Override

public boolean equals(Object other)

Overrides sun.jvm.hotspot.runtime.VMObject.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Annotations

@Override

getLiveRegions	back to summary
public List<MemRegion> getLiveRegions() Implements sun.jvm.hotspot.gc.shared.LiveRegionsProvider.getLiveRegions.

getObjectSize	back to summary
private long getObjectSize(Address rawPtr)

handleCSetRegion	back to summary
private void handleCSetRegion(List<MemRegion> res)

handleHumongousRegion	back to summary
private void handleHumongousRegion(List<MemRegion> res)

handleRegularRegion	back to summary
private void handleRegularRegion(List<MemRegion> res)

hasForwardee	back to summary
private boolean hasForwardee(Address rawPtr)

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides sun.jvm.hotspot.runtime.VMObject.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Annotations @Override

public int hashCode()

Overrides sun.jvm.hotspot.runtime.VMObject.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.