com.netflix.spectator.impl

Class UnsafeUtils

java.lang.Object

com.netflix.spectator.impl.UnsafeUtils

public final class UnsafeUtils
extends Object

Utility class for using sun.misc.Unsafe to access some internal details to get better performance.

This class is an internal implementation detail only intended for use within spectator. It is subject to change without notice.

Method Summary

Modifier and Type	Method and Description
static long	getLong(byte[] bytes, int offset) Treat a seq of 8 bytes at the given offset as a long value.
static byte[]	getStringValueBytes(String str) Get the value array for a String as an array of bytes.
static char[]	getStringValueChars(String str) Get the value array for a String as an array of characters.
static boolean	stringValueBytes() Returns true if it is a newer JDK that uses a byte array for the characters.
static boolean	stringValueSupported() Returns true if extracting the underlying value array for a String is supported.
static boolean	supported() Returns true if unsafe operations are supported.

Methods inherited from class java.lang.Object

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

Method Detail

supported

public static boolean supported()

Returns true if unsafe operations are supported. Code should have a fallback that works when it is not available.

stringValueSupported

public static boolean stringValueSupported()

Returns true if extracting the underlying value array for a String is supported.

stringValueBytes

public static boolean stringValueBytes()

Returns true if it is a newer JDK that uses a byte array for the characters.

getStringValueBytes

public static byte[] getStringValueBytes(String str)

Get the value array for a String as an array of bytes.

getStringValueChars

public static char[] getStringValueChars(String str)

Get the value array for a String as an array of characters.

getLong

public static long getLong(byte[] bytes,
                           int offset)

Treat a seq of 8 bytes at the given offset as a long value.