Class UnsafeAccess

java.lang.Object

com.github.benmanes.caffeine.cache.UnsafeAccess

final class UnsafeAccess
extends Object

Static access to Unsafe and convenient utility methods for performing low-level, unsafe operations.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final String	ANDROID
(package private) static final String	OPEN_JDK
static final sun.misc.Unsafe	UNSAFE	The Unsafe instance.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	UnsafeAccess()

Method Summary

Modifier and Type	Method	Description
(package private) static sun.misc.Unsafe	load(String openJdk, String android)
static long	objectFieldOffset(Class<?> clazz, String fieldName)	Returns the location of a given static field.

Methods inherited from class Object

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

Field Details

ANDROID

static final String ANDROID

See Also:

• Constant Field Values

OPEN_JDK

static final String OPEN_JDK

See Also:

• Constant Field Values

UNSAFE

public static final sun.misc.Unsafe UNSAFE

The Unsafe instance.

Constructor Details

UnsafeAccess

private UnsafeAccess()

Method Details

objectFieldOffset

public static long objectFieldOffset(Class<?> clazz,
 String fieldName)

Returns the location of a given static field.

Parameters:

clazz - the class containing the field

fieldName - the name of the field

Returns:

the address offset of the field

load

static sun.misc.Unsafe load(String openJdk,
 String android)
                     throws NoSuchMethodException,
InstantiationException,
IllegalAccessException,
InvocationTargetException

Throws:

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException