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jdk.vm.ci.meta

public Interface PlatformKind

Known Direct Implementers
jdk.vm.ci.meta.ValueKind.IllegalKind, jdk.vm.ci.aarch64.AArch64Kind, jdk.vm.ci.amd64.AMD64Kind, jdk.vm.ci.riscv64.RISCV64Kind

Represents a platform-specific low-level type for values.

Nested and Inner Type Summary

Modifier and TypeClass and Description
public static class
PlatformKind.EnumKey<E extends Enum<E>>

public static interface

Method Summary

Modifier and TypeMethod and Description
public PlatformKind.Key
getKey()

Gets a value associated with this object that can be used as a stable key in a map.

public int
getSizeInBytes()

Get the size in bytes of this PlatformKind.

public char
getTypeChar()

Gets a single type char that identifies this type for use in debug output.

public int
getVectorLength()

Returns how many primitive values fit in this PlatformKind.

public String
name()

Method Detail

getKeyback to summary
public PlatformKind.Key getKey()

Gets a value associated with this object that can be used as a stable key in a map. The Object#hashCode() implementation of the returned value should be stable between VM executions.

getSizeInBytesback to summary
public int getSizeInBytes()

Get the size in bytes of this PlatformKind.

getTypeCharback to summary
public char getTypeChar()

Gets a single type char that identifies this type for use in debug output.

getVectorLengthback to summary
public int getVectorLength()

Returns how many primitive values fit in this PlatformKind. For scalar types this is one, for SIMD types it may be higher.

nameback to summary
public String name()
jdk.vm.ci.meta back to summary

public Class PlatformKind.EnumKey<E extends Enum<E>>

extends Object
implements Key
Class Inheritance
All Implemented Interfaces
jdk.vm.ci.meta.PlatformKind.Key

Field Summary

Modifier and TypeField and Description
private final Enum<E>
e

Constructor Summary

AccessConstructor and Description
public
EnumKey(Enum<E> e)

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object
the reference object with which to compare.
obj
)

Overrides java.lang.Object.equals.

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

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

eback to summary
private final Enum<E> e

Constructor Detail

EnumKeyback to summary
public EnumKey(Enum<E> e)

Method Detail

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.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.

Parameters
obj:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.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.
Returns:int

a hash code value for this object

Annotations
@Override
jdk.vm.ci.meta back to summary

public Interface PlatformKind.Key

Known Direct Implementers
jdk.vm.ci.meta.PlatformKind.EnumKey