Package org.eclipse.jetty.util

Class AtomicBiInteger

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicLong

org.eclipse.jetty.util.AtomicBiInteger

All Implemented Interfaces:

java.io.Serializable

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

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

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
AtomicBiInteger()
AtomicBiInteger(int hi, int lo)
AtomicBiInteger(long encoded)

Method Summary

Modifier and Type	Method	Description
void	add(int deltaHi, int deltaLo)	Atomically adds the given deltas to the current hi and lo values.
int	addAndGetHi(int delta)	Atomically adds the given delta to the current hi value, returning the updated hi value.
int	addAndGetLo(int delta)	Atomically adds the given delta to the current lo value, returning the updated lo value.
boolean	compareAndSet(int expectHi, int hi, int expectLo, int lo)	Atomically sets the hi and lo values to the given updated values only if the current hi and lo values == the expected hi and lo values.
boolean	compareAndSet(long encoded, int hi, int lo)	Atomically sets the values to the given updated values only if the current encoded value == the expected encoded value.
boolean	compareAndSetHi(int expectHi, int hi)	Atomically sets the hi value to the given updated value only if the current value == the expected value.
boolean	compareAndSetLo(int expectLo, int lo)	Atomically sets the lo value to the given updated value only if the current value == the expected value.
static long	encode(int hi, int lo)	Encodes hi and lo values into a long.
static long	encodeHi(long encoded, int hi)	Sets the hi value into the given encoded value.
static long	encodeLo(long encoded, int lo)	Sets the lo value into the given encoded value.
int	getAndSetHi(int hi)	Atomically sets the hi value without changing the lo value.
int	getAndSetLo(int lo)	Atomically sets the lo value without changing the hi value.
int	getHi()
static int	getHi(long encoded)	Gets a hi value from the given encoded value.
int	getLo()
static int	getLo(long encoded)	Gets a lo value from the given encoded value.
void	set(int hi, int lo)	Sets the hi and lo values.

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()

AtomicBiInteger

public AtomicBiInteger(long encoded)

AtomicBiInteger

public AtomicBiInteger(int hi,
                       int lo)

Method Detail

getHi

public int getHi()

Returns:

the hi value

getLo

public int getLo()

Returns:

the lo value

getAndSetHi

public int getAndSetHi(int hi)

Atomically sets the hi value without changing the lo value.

Parameters:

hi - the new hi value

Returns:

the previous hi value

getAndSetLo

public int getAndSetLo(int lo)

Atomically sets the lo value without changing the hi value.

Parameters:

lo - the new lo value

Returns:

the previous lo value

set

public void set(int hi,
                int lo)

Sets the hi and lo values.

Parameters:

hi - the new hi value

lo - the new lo value

compareAndSetHi

public boolean compareAndSetHi(int expectHi,
                               int hi)

Atomically sets the hi 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:

expectHi - the expected hi value

hi - the new hi value

Returns:

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

compareAndSetLo

public boolean compareAndSetLo(int expectLo,
                               int lo)

Atomically sets the lo 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:

expectLo - the expected lo value

lo - the new lo value

Returns:

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

compareAndSet

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

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

Parameters:

encoded - the expected encoded value

hi - the new hi value

lo - the new lo value

Returns:

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

compareAndSet

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

Atomically sets the hi and lo values to the given updated values only if the current hi and lo values == the expected hi and lo values.

Parameters:

expectHi - the expected hi value

hi - the new hi value

expectLo - the expected lo value

lo - the new lo value

Returns:

true if successful. False return indicates that the actual hi and lo values were not equal to the expected hi and lo value.

addAndGetHi

public int addAndGetHi(int delta)

Atomically adds the given delta to the current hi value, returning the updated hi value.

Parameters:

delta - the delta to apply

Returns:

the updated hi value

addAndGetLo

public int addAndGetLo(int delta)

Atomically adds the given delta to the current lo value, returning the updated lo value.

Parameters:

delta - the delta to apply

Returns:

the updated lo value

add

public void add(int deltaHi,
                int deltaLo)

Atomically adds the given deltas to the current hi and lo values.

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)

Gets a hi value from the given encoded value.

Parameters:

encoded - the encoded value

Returns:

the hi value

getLo

public static int getLo(long encoded)

Gets a lo value from the given encoded value.

Parameters:

encoded - the encoded value

Returns:

the lo value

encode

public static long encode(int hi,
                          int lo)

Encodes hi and lo values into a long.

Parameters:

hi - the hi value

lo - the lo value

Returns:

the encoded value

encodeHi

public static long encodeHi(long encoded,
                            int hi)

Sets the hi value into the given encoded value.

Parameters:

encoded - the encoded value

hi - the hi value

Returns:

the new encoded value

encodeLo

public static long encodeLo(long encoded,
                            int lo)

Sets the lo value into the given encoded value.

Parameters:

encoded - the encoded value

lo - the lo value

Returns:

the new encoded value