water

Class Atomic<T extends Atomic>

java.lang.Object

jsr166y.ForkJoinTask<java.lang.Void>

jsr166y.CountedCompleter

water.H2O.H2OCountedCompleter

water.DTask

water.Atomic<T>

All Implemented Interfaces:

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

Direct Known Subclasses:

DParseTask.AtomicUnion, TAtomic

public abstract class Atomic<T extends Atomic>
extends DTask

Atomic update of a Key

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
Key	_key

Fields inherited from class water.DTask

_cls, _eFromNode, _exception, _fname, _lineNum, _msg, _mth

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
abstract Value	atomic(Value val)
void	compute2()
RPC<Atomic<T>>	fork(Key key)
T	invoke(Key key) Block until it completes, even if run remotely
void	onSuccess(Value old) Executed on the transaction key's home node after any successful atomic update.
byte	priority()

Methods inherited from class water.DTask

copyOver, dinvoke, frozenType, getDException, hasException, logVerbose, newInstance, onAck, onAckAck, onExceptionalCompletion, read, setException, toDocField, write, writeJSONFields

Methods inherited from class water.H2O.H2OCountedCompleter

clone, compute

Methods inherited from class jsr166y.CountedCompleter

addToPendingCount, compareAndSetPendingCount, complete, exec, getCompleter, getPendingCount, getRawResult, onCompletion, 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

public Key _key

Constructor Detail

Atomic

public Atomic()

Atomic

public Atomic(H2O.H2OCountedCompleter completer)

Method Detail

atomic

public abstract Value atomic(Value val)

onSuccess

public 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 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()

Specified by:

compute2 in class H2O.H2OCountedCompleter

priority

public byte priority()

Overrides:

priority in class H2O.H2OCountedCompleter