com.sleepycat.je.txn

Class ThreadLocker

java.lang.Object

com.sleepycat.je.txn.Locker

com.sleepycat.je.txn.BasicLocker

com.sleepycat.je.txn.ThreadLocker

public class ThreadLocker
extends BasicLocker

Extends BasicLocker to share locks among all lockers for the same thread. This locker is used when a JE entry point is called with a null transaction parameter.

Field Summary

Fields inherited from class com.sleepycat.je.txn.Locker

defaultNoWait, deleteInfo, envImpl, handleLockToHandleMap, handleToHandleLockMap, id, lockManager, lockTimeOutMillis, readUncommittedDefault, thread

Constructor Summary

Constructors

Constructor and Description
ThreadLocker(EnvironmentImpl env) Creates a ThreadLocker.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	checkState(boolean ignoreCalledByAbort) Check that this txn is not used in the wrong thread.
Locker	newNonTxnLocker() Creates a new instance of this txn for the same environment.
boolean	sharesLocksWith(Locker other) Returns whether this locker can share locks with the given locker.

Methods inherited from class com.sleepycat.je.txn.BasicLocker

collectStats, createdNode, generateId, getAbortLsn, getOwnerAbortLsn, getTxnLocker, getWriteLockInfo, getWriteOwnerLocker, isReadCommittedIsolation, isSerializableIsolation, isTransactional, markDeleteAtTxnEnd, operationEnd, operationEnd, registerCursor, releaseNonTxnLocks, setHandleLockOwner, unRegisterCursor

Methods inherited from class com.sleepycat.je.txn.Locker

addDeleteInfo, addToHandleMaps, demoteLock, dumpLockTable, getDefaultNoWait, getId, getLockTimeout, getTxnTimeOut, isHandleLockTransferrable, isReadUncommittedDefault, isTimedOut, lock, nonBlockingLock, operationEnd, releaseLock, setLockTimeout, setTxnTimeout, toString, transferHandleLock

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadLocker

public ThreadLocker(EnvironmentImpl env)
             throws DatabaseException

Creates a ThreadLocker.

Throws:

DatabaseException

Method Detail

checkState

protected void checkState(boolean ignoreCalledByAbort)
                   throws DatabaseException

Check that this txn is not used in the wrong thread.

Overrides:

checkState in class BasicLocker

Throws:

DatabaseException

newNonTxnLocker

public Locker newNonTxnLocker()
                       throws DatabaseException

Creates a new instance of this txn for the same environment. No transactional locks are held by this object, so no locks are retained.

Overrides:

newNonTxnLocker in class BasicLocker

Throws:

DatabaseException

sharesLocksWith

public boolean sharesLocksWith(Locker other)

Returns whether this locker can share locks with the given locker. Locks are shared when both are txns are ThreadLocker instances for the same thread.

Overrides:

sharesLocksWith in class Locker