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.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

Key

_key

Fields inherited from class water.DTask

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

Constructor Summary

Atomic()

Method Summary

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() Executed on the transaction key's home node after any successful atomic update.
byte	priority()

Methods inherited from class water.DTask

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

Methods inherited from class water.H2O.H2OCountedCompleter

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()

Method Detail

atomic

public abstract Value atomic(Value val)

onSuccess

public void onSuccess()

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