jdk.internal.jvmci.meta

Class AbstractJavaProfile<T extends AbstractProfiledItem<U>,U>

java.lang.Object

jdk.internal.jvmci.meta.AbstractJavaProfile<T,U>

Type Parameters:

T - a subclass of AbstractProfiledItem

U - the class of the items that are profiled at the specific BCI and for which probabilities are stored. E.g., a ResolvedJavaType or a ResolvedJavaMethod.

Direct Known Subclasses:

JavaMethodProfile, JavaTypeProfile

public abstract class AbstractJavaProfile<T extends AbstractProfiledItem<U>,U>
extends Object

This object holds probability information for a set of items that were profiled at a specific BCI. The precision of the supplied values may vary, but a runtime that provides this information should be aware that it will be used to guide performance-critical decisions like speculative inlining, etc.

Field Summary

Fields

Modifier and Type	Field and Description
private double	notRecordedProbability
private T[]	pitems

Constructor Summary

Constructors

Constructor and Description
AbstractJavaProfile(double notRecordedProbability, T[] pitems)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
T	findEntry(ResolvedJavaType type) Searches for an entry of a given resolved Java type.
protected T[]	getItems()
double	getNotRecordedProbability() Returns the estimated probability of all types that could not be recorded due to profiling limitations.
int	hashCode()
boolean	isIncluded(U item)
private boolean	isSorted() Determines if an array of profiled items are sorted in descending order of their probabilities.
String	toString()
private double	totalProbablility()

Methods inherited from class java.lang.Object

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

Field Detail

notRecordedProbability

private final double notRecordedProbability

pitems

private final T extends AbstractProfiledItem<U>[] pitems

Constructor Detail

AbstractJavaProfile

public AbstractJavaProfile(double notRecordedProbability,
                           T[] pitems)

Method Detail

totalProbablility

private double totalProbablility()

isSorted

private boolean isSorted()

Determines if an array of profiled items are sorted in descending order of their probabilities.

getNotRecordedProbability

public double getNotRecordedProbability()

Returns the estimated probability of all types that could not be recorded due to profiling limitations.

Returns:

double value ≥ 0.0 and ≤ 1.0

getItems

protected T[] getItems()

findEntry

public T findEntry(ResolvedJavaType type)

Searches for an entry of a given resolved Java type.

Parameters:

type - the type for which an entry should be searched

Returns:

the entry or null if no entry for this type can be found

toString

public String toString()

Overrides:

toString in class Object

isIncluded

public boolean isIncluded(U item)

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object