Package org.eclipse.jetty.util

Class AtomicBiInteger

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicLong

org.eclipse.jetty.util.AtomicBiInteger

public class AtomicBiInteger
extends java.util.concurrent.atomic.AtomicLong

An AtomicLong with additional methods to treat it has two hi/lo integers.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
AtomicBiInteger()

Method Summary

Modifier and Type	Method	Description
boolean	compareAndSet(int expectHi, int hi, int expectLo, int lo)	Atomically sets the values to the given updated values only if the current encoded value == the expected value.
boolean	compareAndSet(long expect, int hi, int lo)	Atomically sets the values to the given updated values only if the current encoded value == the expected value.
boolean	compareAndSetHi(int expect, int hi)	Atomically sets the hi int value to the given updated value only if the current value == the expected value.
boolean	compareAndSetLo(int expect, int lo)	Atomically sets the lo int value to the given updated value only if the current value == the expected value.
static long	encode(int hi, int lo)	Encode hi and lo int values into a long
static long	encodeHi(long encoded, int hi)	Encode hi int values into an already encoded long
static long	encodeLo(long encoded, int lo)	Encode lo int values into an already encoded long
int	getHi()
static int	getHi(long encoded)	Get a hi int value from an encoded long
int	getLo()
static int	getLo(long encoded)	Get a lo int value from an encoded long
void	set(int hi, int lo)	Set the hi and lo integer values.
int	setHi(int hi)	Atomically set the hi integer value without changing the lo value.
int	setLo(int lo)	Atomically set the lo integer value without changing the hi value.
void	update(int deltaHi, int deltaLo)	Atomically updates the current values with the results of applying the given deltas.
int	updateHi(int delta)	Atomically updates the current hi value with the results of applying the given delta, returning the updated value.
int	updateLo(int delta)	Atomically updates the current lo value with the results of applying the given delta, returning the updated value.

Methods inherited from class java.util.concurrent.atomic.AtomicLong

accumulateAndGet, addAndGet, compareAndExchange, compareAndExchangeAcquire, compareAndExchangeRelease, compareAndSet, decrementAndGet, doubleValue, floatValue, get, getAcquire, getAndAccumulate, getAndAdd, getAndDecrement, getAndIncrement, getAndSet, getAndUpdate, getOpaque, getPlain, incrementAndGet, intValue, lazySet, longValue, set, setOpaque, setPlain, setRelease, toString, updateAndGet, weakCompareAndSet, weakCompareAndSetAcquire, weakCompareAndSetPlain, weakCompareAndSetRelease, weakCompareAndSetVolatile

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

AtomicBiInteger

public AtomicBiInteger()

Method Detail

getHi

public int getHi()

Returns:

the hi integer value

getLo

public int getLo()

Returns:

the lo integer value

setHi

public int setHi(int hi)

Atomically set the hi integer value without changing the lo value.

Parameters:

hi - the new hi value

Returns:

the hi int value

setLo

public int setLo(int lo)

Atomically set the lo integer value without changing the hi value.

Parameters:

lo - the new lo value

set

public void set(int hi,
                int lo)

Set the hi and lo integer values.

Parameters:

hi - the new hi value

lo - the new lo value

compareAndSetHi

public boolean compareAndSetHi(int expect,
                               int hi)

Atomically sets the hi int value to the given updated value only if the current value == the expected value. Concurrent changes to the lo value result in a retry.

Parameters:

expect - the expected value

hi - the new value

Returns:

true if successful. False return indicates that the actual value was not equal to the expected value.

compareAndSetLo

public boolean compareAndSetLo(int expect,
                               int lo)

Atomically sets the lo int value to the given updated value only if the current value == the expected value. Concurrent changes to the hi value result in a retry.

Parameters:

expect - the expected value

lo - the new value

Returns:

true if successful. False return indicates that the actual value was not equal to the expected value.

compareAndSet

public boolean compareAndSet(long expect,
                             int hi,
                             int lo)

Atomically sets the values to the given updated values only if the current encoded value == the expected value.

Parameters:

expect - the expected encoded values

hi - the new hi value

lo - the new lo value

Returns:

true if successful. False return indicates that the actual value was not equal to the expected value.

compareAndSet

public boolean compareAndSet(int expectHi,
                             int hi,
                             int expectLo,
                             int lo)

Atomically sets the values to the given updated values only if the current encoded value == the expected value.

Parameters:

expectHi - the expected hi values

hi - the new hi value

expectLo - the expected lo values

lo - the new lo value

Returns:

true if successful. False return indicates that the actual value was not equal to the expected value.

updateHi

public int updateHi(int delta)

Atomically updates the current hi value with the results of applying the given delta, returning the updated value.

Parameters:

delta - the delta to apply

Returns:

the updated value

updateLo

public int updateLo(int delta)

Atomically updates the current lo value with the results of applying the given delta, returning the updated value.

Parameters:

delta - the delta to apply

Returns:

the updated value

update

public void update(int deltaHi,
                   int deltaLo)

Atomically updates the current values with the results of applying the given deltas.

Parameters:

deltaHi - the delta to apply to the hi value

deltaLo - the delta to apply to the lo value

getHi

public static int getHi(long encoded)

Get a hi int value from an encoded long

Parameters:

encoded - the encoded value

Returns:

the hi int value

getLo

public static int getLo(long encoded)

Get a lo int value from an encoded long

Parameters:

encoded - the encoded value

Returns:

the lo int value

encode

public static long encode(int hi,
                          int lo)

Encode hi and lo int values into a long

Parameters:

hi - the hi int value

lo - the lo int value

Returns:

the encoded value

encodeHi

public static long encodeHi(long encoded,
                            int hi)

Encode hi int values into an already encoded long

Parameters:

encoded - the encoded value

hi - the hi int value

Returns:

the encoded value

encodeLo

public static long encodeLo(long encoded,
                            int lo)

Encode lo int values into an already encoded long

Parameters:

encoded - the encoded value

lo - the lo int value

Returns:

the encoded value