org.multiverse.stms.alpha
Class AlphaStmConfig

java.lang.Object
  org.multiverse.stms.alpha.AlphaStmConfig

public final class AlphaStmConfig
extends Object

An Object responsible for storing the configuration for an AlphaStm. So instead of having to deal with ever growing number of arguments, the AlphaStm constructor only needs a single argument.

Once the AlphaStm is constructed, changes made to the config object is not visible to the stm that received. It wil have copied all fields, and doesn't read from the config after creation anymore.

AlphaStmConfig is not thread-safe. It can be shared between threads as long as no changes are to the config and there is a save handover point from construction to usage. A volatile variable or mutex would do the trick. As long as there is a happens before relation between the write and the read expressed in terms of the JMM.

A config will always be checked by the constructor of the stm if all fields are correctly initialized.

Author:

Peter Veentjer.

Field Summary

boolean	allowWriteSkew
org.multiverse.api.backoff.BackoffPolicy	backoffPolicy
org.multiverse.api.clock.PrimitiveClock	clock
org.multiverse.api.commitlock.CommitLockPolicy	commitLockPolicy
boolean	dirtyCheckEnabled
boolean	explicitRetryAllowed
boolean	interruptible
boolean	loggingOfControlFlowErrorsEnabled
int	maxFixedUpdateSize
int	maxReadSpinCount
int	maxRetries
boolean	optimizedConflictDetectionEnabled
boolean	quickReleaseWriteLocksEnabled
boolean	readTrackingEnabled
boolean	speculativeConfigurationEnabled

Constructor Summary

AlphaStmConfig()

Method Summary

static AlphaStmConfig	createDebugConfig()
static AlphaStmConfig	createFastConfig()
void	ensureValid() Check if the AlphaStmConfig has been configured correctly.

Methods inherited from class java.lang.Object

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

Field Detail

maxReadSpinCount

public int maxReadSpinCount

clock

public org.multiverse.api.clock.PrimitiveClock clock

commitLockPolicy

public org.multiverse.api.commitlock.CommitLockPolicy commitLockPolicy

backoffPolicy

public org.multiverse.api.backoff.BackoffPolicy backoffPolicy

quickReleaseWriteLocksEnabled

public boolean quickReleaseWriteLocksEnabled

speculativeConfigurationEnabled

public boolean speculativeConfigurationEnabled

maxRetries

public int maxRetries

maxFixedUpdateSize

public int maxFixedUpdateSize

optimizedConflictDetectionEnabled

public boolean optimizedConflictDetectionEnabled

dirtyCheckEnabled

public boolean dirtyCheckEnabled

explicitRetryAllowed

public boolean explicitRetryAllowed

readTrackingEnabled

public boolean readTrackingEnabled

allowWriteSkew

public boolean allowWriteSkew

interruptible

public boolean interruptible

loggingOfControlFlowErrorsEnabled

public boolean loggingOfControlFlowErrorsEnabled

Constructor Detail

AlphaStmConfig

public AlphaStmConfig()

Method Detail

createDebugConfig

public static AlphaStmConfig createDebugConfig()

createFastConfig

public static AlphaStmConfig createFastConfig()

ensureValid

public void ensureValid()

Check if the AlphaStmConfig has been configured correctly.

Throws:

IllegalStateException - if the configuration isn't valid.