Package org.greenrobot.essentials

Class PrimitiveArrayUtils

java.lang.Object

org.greenrobot.essentials.PrimitiveArrayUtils

Direct Known Subclasses:

PrimitiveArrayUtils.SafeImpl, PrimitiveArrayUtils.UnsafeImpl

public abstract class PrimitiveArrayUtils
extends java.lang.Object

Retrieves int and long values from byte arrays. By default it uses a "safe" implementation (plain Java). By calling initUnsafeInstance(), you can switch to sun.misc.Unsafe (deprecated) for fast access.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	PrimitiveArrayUtils.SafeImpl
private static class	PrimitiveArrayUtils.UnsafeImpl

Field Summary

Fields

Modifier and Type	Field	Description
private static PrimitiveArrayUtils	instanceSafe
private static PrimitiveArrayUtils	instanceUnsafe

Constructor Summary

Constructors

Constructor	Description
PrimitiveArrayUtils()

Method Summary

Modifier and Type	Method	Description
static PrimitiveArrayUtils	getInstance()
static PrimitiveArrayUtils	getInstanceSafe()
abstract int	getIntBE(byte[] bytes, int index)
abstract int	getIntLE(byte[] bytes, int index)
abstract int	getIntLE(char[] chars, int index)
abstract long	getLongBE(byte[] bytes, int index)
abstract long	getLongLE(byte[] bytes, int index)
static boolean	initUnsafeInstance()	If sun.misc.Unsafe is available, this will init the static instance with a fast implementation.

Methods inherited from class java.lang.Object

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

Field Detail

instanceUnsafe

private static volatile PrimitiveArrayUtils instanceUnsafe

instanceSafe

private static final PrimitiveArrayUtils instanceSafe

Constructor Detail

PrimitiveArrayUtils

public PrimitiveArrayUtils()

Method Detail

getInstance

public static PrimitiveArrayUtils getInstance()

initUnsafeInstance

public static boolean initUnsafeInstance()

If sun.misc.Unsafe is available, this will init the static instance with a fast implementation.

Returns:

true if an unsafe implementation is available - future calls to getInstance() will return it.

getInstanceSafe

public static PrimitiveArrayUtils getInstanceSafe()

getIntLE

public abstract int getIntLE(byte[] bytes,
                             int index)

getIntBE

public abstract int getIntBE(byte[] bytes,
                             int index)

getLongLE

public abstract long getLongLE(byte[] bytes,
                               int index)

getLongBE

public abstract long getLongBE(byte[] bytes,
                               int index)

getIntLE

public abstract int getIntLE(char[] chars,
                             int index)