org.multiverse.stms.gamma.transactionalobjects
Class BaseGammaTxnRef

java.lang.Object
  org.multiverse.stms.gamma.transactionalobjects.AbstractGammaObject
      org.multiverse.stms.gamma.transactionalobjects.BaseGammaTxnRef

All Implemented Interfaces:

Lock, MultiverseConstants, GammaConstants, GammaObject

Direct Known Subclasses:

GammaTxnBoolean, GammaTxnDouble, GammaTxnInteger, GammaTxnLong, GammaTxnRef

public abstract class BaseGammaTxnRef
extends AbstractGammaObject

Field Summary

long	long_value
Object	ref_value
int	type

Fields inherited from class org.multiverse.stms.gamma.transactionalobjects.AbstractGammaObject

___unsafe, identityHashCode, listeners, listenersOffset, MASK_OREC_EXCLUSIVELOCK, MASK_OREC_READBIASED, MASK_OREC_READLOCKS, MASK_OREC_READONLY_COUNT, MASK_OREC_SURPLUS, MASK_OREC_UPDATELOCK, orec, stm, valueOffset, version

Fields inherited from interface org.multiverse.stms.gamma.GammaConstants

FAILURE, MASK_CONFLICT, MASK_SUCCESS, MASK_UNREGISTERED, REGISTRATION_DONE, REGISTRATION_NONE, REGISTRATION_NOT_NEEDED, TRANLOCAL_COMMUTING, TRANLOCAL_CONSTRUCTING, TRANLOCAL_READ, TRANLOCAL_WRITE, TRANSACTIONTYPE_FAT_FIXED_LENGTH, TRANSACTIONTYPE_FAT_MONO, TRANSACTIONTYPE_FAT_VARIABLE_LENGTH, TRANSACTIONTYPE_LEAN_FIXED_LENGTH, TRANSACTIONTYPE_LEAN_MONO, TX_ABORTED, TX_ACTIVE, TX_COMMITTED, TX_PREPARED, TYPE_BOOLEAN, TYPE_DOUBLE, TYPE_INT, TYPE_LONG, TYPE_REF, VERSION_UNCOMMITTED

Fields inherited from interface org.multiverse.MultiverseConstants

LOCKMODE_EXCLUSIVE, LOCKMODE_NONE, LOCKMODE_READ, LOCKMODE_WRITE, SHAKE_BUGS, SPIN_YIELD, TRACING_ENABLED

Constructor Summary

protected

BaseGammaTxnRef(GammaStm stm, int type)

Method Summary

void	acquire(GammaTxn tx, LockMode lockMode)
void	acquire(LockMode desiredLockMode) Acquires a Lock with the provided LockMode.
void	acquire(Txn tx, LockMode desiredLockMode) Acquires a Lock with the provided LockMode using the provided transaction.
protected int	arriveAndExclusiveLockOrBackoff()
boolean	atomicCompareAndSetLong(long expectedValue, long newValue)
long	atomicGetLong()
Object	atomicObjectGet()
long	atomicSetLong(long newValue, boolean returnOld)
Object	atomicSetObject(Object newValue, boolean returnOld)
Listeners	commit(Tranlocal tranlocal, GammaObjectPool pool)
void	ensure()
void	ensure(GammaTxn tx)
void	ensure(Txn self)
boolean	flattenCommute(GammaTxn tx, Tranlocal tranlocal, int lockMode)
protected long	getLong(GammaTxn tx, LockMode lockMode)
protected Object	getObject(GammaTxn tx, LockMode lockMode)
boolean	hasReadConflict(Tranlocal tranlocal)
Listeners	leanCommit(Tranlocal tranlocal)
boolean	load(GammaTxn tx, Tranlocal tranlocal, int lockMode, int spinCount, boolean arriveNeeded)
void	openForCommute(FatFixedLengthGammaTxn tx, Function function)
void	openForCommute(FatMonoGammaTxn tx, Function function)
void	openForCommute(FatVariableLengthGammaTxn tx, Function function)
void	openForCommute(GammaTxn tx, Function function)
Tranlocal	openForConstruction(FatFixedLengthGammaTxn tx)
Tranlocal	openForConstruction(FatMonoGammaTxn tx)
Tranlocal	openForConstruction(FatVariableLengthGammaTxn tx)
Tranlocal	openForConstruction(GammaTxn tx)
Tranlocal	openForRead(FatFixedLengthGammaTxn tx, int desiredLockMode)
Tranlocal	openForRead(FatMonoGammaTxn tx, int lockMode)
Tranlocal	openForRead(FatVariableLengthGammaTxn tx, int desiredLockMode)
Tranlocal	openForRead(GammaTxn tx, int lockMode)
Tranlocal	openForRead(LeanFixedLengthGammaTxn tx, int lockMode)
Tranlocal	openForRead(LeanMonoGammaTxn tx, int lockMode)
Tranlocal	openForWrite(FatFixedLengthGammaTxn tx, int lockMode)
Tranlocal	openForWrite(FatMonoGammaTxn tx, int desiredLockMode)
Tranlocal	openForWrite(FatVariableLengthGammaTxn tx, int lockMode)
Tranlocal	openForWrite(GammaTxn tx, int lockMode)
Tranlocal	openForWrite(LeanFixedLengthGammaTxn tx, int lockMode)
Tranlocal	openForWrite(LeanMonoGammaTxn tx, int lockMode)
boolean	prepare(GammaTxn tx, Tranlocal tranlocal)
int	registerChangeListener(RetryLatch latch, Tranlocal tranlocal, GammaObjectPool pool, long listenerEra)
void	releaseAfterFailure(Tranlocal tranlocal, GammaObjectPool pool)
void	releaseAfterReading(Tranlocal tranlocal, GammaObjectPool pool)
void	releaseAfterUpdate(Tranlocal tranlocal, GammaObjectPool pool)
protected long	setLong(GammaTxn tx, LockMode lockMode, long newValue, boolean returnOld)
protected Object	setObject(GammaTxn tx, LockMode lockMode, Object newValue, boolean returnOld)
boolean	tryLockAndCheckConflict(GammaTxn tx, Tranlocal tranlocal, int spinCount, int desiredLockMode) Tries to acquire a lock on a previous read/written tranlocal and checks for conflict.

Methods inherited from class org.multiverse.stms.gamma.transactionalobjects.AbstractGammaObject

___removeListenersAfterWrite, ___toOrecString, arrive, arriveAndExclusiveLock, arriveAndLock, atomicGetLockMode, atomicGetLockModeAsInt, departAfterFailure, departAfterFailureAndUnlock, departAfterReading, departAfterReadingAndUnlock, departAfterUpdateAndUnlock, getLock, getLockMode, getLockMode, getLockMode, getReadBiasedThreshold, getReadLockCount, getReadLockCount, getReadonlyCount, getReadonlyCount, getStm, getSurplus, getSurplus, getVersion, hasAnyLock, hasExclusiveLock, hasExclusiveLock, hasWriteLock, hasWriteLock, hasWriteOrExclusiveLock, identityHashCode, isReadBiased, isReadBiased, lockAfterArrive, setExclusiveLock, setIsReadBiased, setReadLockCount, setReadonlyCount, setSurplus, setWriteLock, unlockByUnregistered, upgradeReadLock, upgradeWriteLock, waitForExclusiveLockToBecomeFree

Methods inherited from class java.lang.Object

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

Field Detail

type

public final int type

long_value

public volatile long long_value

ref_value

public volatile Object ref_value

Constructor Detail

BaseGammaTxnRef

protected BaseGammaTxnRef(GammaStm stm,
                          int type)

Method Detail

flattenCommute

public final boolean flattenCommute(GammaTxn tx,
                                    Tranlocal tranlocal,
                                    int lockMode)

commit

public final Listeners commit(Tranlocal tranlocal,
                              GammaObjectPool pool)

leanCommit

public final Listeners leanCommit(Tranlocal tranlocal)

prepare

public final boolean prepare(GammaTxn tx,
                             Tranlocal tranlocal)

releaseAfterFailure

public final void releaseAfterFailure(Tranlocal tranlocal,
                                      GammaObjectPool pool)

releaseAfterUpdate

public final void releaseAfterUpdate(Tranlocal tranlocal,
                                     GammaObjectPool pool)

releaseAfterReading

public final void releaseAfterReading(Tranlocal tranlocal,
                                      GammaObjectPool pool)

load

public final boolean load(GammaTxn tx,
                          Tranlocal tranlocal,
                          int lockMode,
                          int spinCount,
                          boolean arriveNeeded)

openForConstruction

public final Tranlocal openForConstruction(GammaTxn tx)

openForConstruction

public final Tranlocal openForConstruction(FatMonoGammaTxn tx)

openForConstruction

public final Tranlocal openForConstruction(FatVariableLengthGammaTxn tx)

openForConstruction

public final Tranlocal openForConstruction(FatFixedLengthGammaTxn tx)

openForRead

public final Tranlocal openForRead(GammaTxn tx,
                                   int lockMode)

openForRead

public final Tranlocal openForRead(LeanMonoGammaTxn tx,
                                   int lockMode)

openForRead

public final Tranlocal openForRead(LeanFixedLengthGammaTxn tx,
                                   int lockMode)

openForRead

public final Tranlocal openForRead(FatMonoGammaTxn tx,
                                   int lockMode)

openForRead

public final Tranlocal openForRead(FatFixedLengthGammaTxn tx,
                                   int desiredLockMode)

openForRead

public final Tranlocal openForRead(FatVariableLengthGammaTxn tx,
                                   int desiredLockMode)

openForWrite

public final Tranlocal openForWrite(GammaTxn tx,
                                    int lockMode)

openForWrite

public final Tranlocal openForWrite(LeanMonoGammaTxn tx,
                                    int lockMode)

openForWrite

public final Tranlocal openForWrite(LeanFixedLengthGammaTxn tx,
                                    int lockMode)

openForWrite

public final Tranlocal openForWrite(FatMonoGammaTxn tx,
                                    int desiredLockMode)

openForWrite

public final Tranlocal openForWrite(FatFixedLengthGammaTxn tx,
                                    int lockMode)

openForWrite

public final Tranlocal openForWrite(FatVariableLengthGammaTxn tx,
                                    int lockMode)

openForCommute

public final void openForCommute(GammaTxn tx,
                                 Function function)

openForCommute

public final void openForCommute(FatMonoGammaTxn tx,
                                 Function function)

openForCommute

public final void openForCommute(FatFixedLengthGammaTxn tx,
                                 Function function)

openForCommute

public final void openForCommute(FatVariableLengthGammaTxn tx,
                                 Function function)

ensure

public final void ensure()

ensure

public final void ensure(Txn self)

ensure

public final void ensure(GammaTxn tx)

getLong

protected final long getLong(GammaTxn tx,
                             LockMode lockMode)

getObject

protected final Object getObject(GammaTxn tx,
                                 LockMode lockMode)

setLong

protected final long setLong(GammaTxn tx,
                             LockMode lockMode,
                             long newValue,
                             boolean returnOld)

setObject

protected final Object setObject(GammaTxn tx,
                                 LockMode lockMode,
                                 Object newValue,
                                 boolean returnOld)

atomicGetLong

public final long atomicGetLong()

atomicObjectGet

public final Object atomicObjectGet()

atomicSetLong

public final long atomicSetLong(long newValue,
                                boolean returnOld)

atomicSetObject

public final Object atomicSetObject(Object newValue,
                                    boolean returnOld)

atomicCompareAndSetLong

public final boolean atomicCompareAndSetLong(long expectedValue,
                                             long newValue)

acquire

public final void acquire(LockMode desiredLockMode)

Description copied from interface: Lock

Acquires a Lock with the provided LockMode. This call doesn't block if the Lock can't be upgraded, but throws a ReadWriteConflict. It could also be that the Lock is acquired, but the Txn sees that it isn't consistent anymore. In that case also a ReadWriteConflict is thrown.

This call makes use of the Txn stored in the TxnThreadLocal.

If the lockMode is lower than the LockMode the transaction already has on this Lock, the call is ignored.

Parameters:

desiredLockMode - the desired lockMode.

acquire

public final void acquire(Txn tx,
                          LockMode desiredLockMode)

Description copied from interface: Lock

Acquires a Lock with the provided LockMode using the provided transaction. This call doesn't block if the Lock can't be upgraded but throws a ReadWriteConflict. It could also be that the Lock is acquired, but the Txn sees that it isn't consistent anymore. In that case also a ReadWriteConflict is thrown.

If the lockMode is lower than the LockMode the transaction already has on this Lock, the call is ignored.

Parameters:

tx - the Txn used for this operation.

desiredLockMode - the desired lockMode.

acquire

public final void acquire(GammaTxn tx,
                          LockMode lockMode)

tryLockAndCheckConflict

public final boolean tryLockAndCheckConflict(GammaTxn tx,
                                             Tranlocal tranlocal,
                                             int spinCount,
                                             int desiredLockMode)

Tries to acquire a lock on a previous read/written tranlocal and checks for conflict.

If the lockMode == LOCKMODE_NONE, this call is ignored.

The call to this method can safely made if the current lock level is higher the the desired LockMode.

If the can't be acquired, no changes are made on the tranlocal.

Parameters:

tx -

tranlocal - the tranlocal

spinCount - the maximum number of times to spin

desiredLockMode -

Returns:

true if the lock was acquired successfully and there was no conflict.

registerChangeListener

public final int registerChangeListener(RetryLatch latch,
                                        Tranlocal tranlocal,
                                        GammaObjectPool pool,
                                        long listenerEra)

hasReadConflict

public final boolean hasReadConflict(Tranlocal tranlocal)

arriveAndExclusiveLockOrBackoff

protected final int arriveAndExclusiveLockOrBackoff()