water

Class Atomic<T extends Atomic>

java.lang.Object

jsr166y.ForkJoinTask<java.lang.Void>

jsr166y.CountedCompleter

water.H2O.H2OCountedCompleter<T>

water.DTask<T>

water.Atomic<T>

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.concurrent.Future<java.lang.Void>, Freezable<T>

Direct Known Subclasses:

TAtomic

public abstract class Atomic<T extends Atomic>
extends DTask<T>

Atomic update of a Key

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class water.DTask

DTask.DKeyTask<T extends DTask.DKeyTask,V extends Keyed>, DTask.RemoveCall

Field Summary

Fields

Modifier and Type	Field and Description
protected Key	_key

Fields inherited from class water.DTask

_ex

Constructor Summary

Constructors

Constructor and Description
Atomic()
Atomic(H2O.H2OCountedCompleter completer)

Method Summary

Modifier and Type	Method and Description
protected abstract Value	atomic(Value val)
void	compute2() Override compute3() with actual work without having to worry about tryComplete()
RPC<Atomic<T>>	fork(Key key)
Atomic<T>	invoke(Key key) Block until it completes, even if run remotely
protected void	onSuccess(Value old) Executed on the transaction key's home node after any successful atomic update.

Methods inherited from class water.DTask

copyOver, dinvoke, getDException, hasException, logVerbose, onAck, onAckAck, setException

Methods inherited from class water.H2O.H2OCountedCompleter

asBytes, clone, compute, compute1, currThrPriority, frozenType, icer, priority, read, readJSON, reloadFromBytes, write, writeJSON

Methods inherited from class jsr166y.CountedCompleter

__tryComplete, addToPendingCount, compareAndSetPendingCount, complete, exec, getCompleter, getPendingCount, getRawResult, onCompletion, onExceptionalCompletion, setCompleter, setPendingCount, setRawResult, tryComplete

Methods inherited from class jsr166y.ForkJoinTask

adapt, adapt, adapt, cancel, compareAndSetForkJoinTaskTag, completeExceptionally, fork, get, get, getException, getForkJoinTaskTag, getPool, getQueuedTaskCount, getSurplusQueuedTaskCount, helpQuiesce, inForkJoinPool, invoke, invokeAll, invokeAll, invokeAll, isCancelled, isCompletedAbnormally, isCompletedNormally, isDone, join, peekNextLocalTask, pollNextLocalTask, pollTask, quietlyComplete, quietlyInvoke, quietlyJoin, reinitialize, setForkJoinTaskTag, tryUnfork

Methods inherited from class java.lang.Object

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

Field Detail

_key

protected Key _key

Constructor Detail

Atomic

public Atomic()

Atomic

public Atomic(H2O.H2OCountedCompleter completer)

Method Detail

atomic

protected abstract Value atomic(Value val)

onSuccess

protected void onSuccess(Value old)

Executed on the transaction key's home node after any successful atomic update. Override this if you need to perform some action after the update succeeds (eg cleanup).

invoke

public final Atomic<T> invoke(Key key)

Block until it completes, even if run remotely

fork

public final RPC<Atomic<T>> fork(Key key)

compute2

public final void compute2()

Description copied from class: H2O.H2OCountedCompleter

Override compute3() with actual work without having to worry about tryComplete()

Overrides:

compute2 in class H2O.H2OCountedCompleter<T extends Atomic>