jdk.internal.jvmci.code

Class InstalledCode

java.lang.Object

jdk.internal.jvmci.code.InstalledCode

Direct Known Subclasses:

HotSpotInstalledCode, OptimizedCallTarget

public class InstalledCode
extends Object

Represents a compiled instance of a method. It may have been invalidated or removed in the meantime.

Field Summary

Fields

Modifier and Type	Field and Description
private long	address Raw address of this code blob.
protected String	name
private long	version Counts how often the address field was reassigned.

Constructor Summary

Constructors

Constructor and Description
InstalledCode(String name)

Method Summary

Modifier and Type	Method and Description
Object	executeVarargs(Object... args) Executes the installed code with a variable number of arguments.
long	getAddress()
byte[]	getCode() Returns a copy of this installed code if it is valid, null otherwise.
long	getCodeSize() Returns the number of instruction bytes for this code.
String	getName() Returns the name of this code blob.
long	getStart() Returns the start address of this installed code if it is valid, 0 otherwise.
long	getVersion()
void	invalidate() Invalidates this installed code such that any subsequent invocation will throw an InvalidInstalledCodeException.
boolean	isValid()
void	setAddress(long address)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

address

private long address

Raw address of this code blob.

version

private long version

Counts how often the address field was reassigned.

name

protected final String name

Constructor Detail

InstalledCode

public InstalledCode(String name)

Method Detail

setAddress

public final void setAddress(long address)

getAddress

public final long getAddress()

Returns:

the address of this code blob

getVersion

public final long getVersion()

Returns:

the address of this code blob

getName

public String getName()

Returns the name of this code blob.

getStart

public long getStart()

Returns the start address of this installed code if it is valid, 0 otherwise.

getCodeSize

public long getCodeSize()

Returns the number of instruction bytes for this code.

getCode

public byte[] getCode()

Returns a copy of this installed code if it is valid, null otherwise.

isValid

public boolean isValid()

Returns:

true if the code represented by this object is still valid, false otherwise (may happen due to deopt, etc.)

invalidate

public void invalidate()

Invalidates this installed code such that any subsequent invocation will throw an InvalidInstalledCodeException.

executeVarargs

public Object executeVarargs(Object... args)
                      throws InvalidInstalledCodeException

Executes the installed code with a variable number of arguments.

Parameters:

args - the array of object arguments

Returns:

the value returned by the executed code

Throws:

InvalidInstalledCodeException