net.openhft.chronicle.queue.impl.single

Class AppendLock

java.lang.Object

net.openhft.chronicle.core.io.AbstractCloseable

net.openhft.chronicle.queue.impl.table.AbstractTSQueueLock

net.openhft.chronicle.queue.impl.single.TableStoreWriteLock

net.openhft.chronicle.queue.impl.single.AppendLock

All Implemented Interfaces:

Closeable, AutoCloseable, net.openhft.chronicle.core.io.ManagedCloseable, net.openhft.chronicle.core.io.QueryCloseable, net.openhft.chronicle.core.io.ReferenceOwner, net.openhft.chronicle.core.io.SingleThreadedChecked, WriteLock

public class AppendLock
extends TableStoreWriteLock

Field Summary

Fields inherited from class net.openhft.chronicle.queue.impl.single.TableStoreWriteLock

APPEND_LOCK_KEY

Fields inherited from class net.openhft.chronicle.queue.impl.table.AbstractTSQueueLock

forceUnlockOnTimeoutWhen, lock, path, pauser, PID, tableStore, UNLOCK_MAIN_MSG, UNLOCKED, UNLOCKING_FORCIBLY_MSG

Fields inherited from class net.openhft.chronicle.core.io.AbstractCloseable

closedHere, DISABLE_DISCARD_WARNING, WARN_NS

Fields inherited from interface net.openhft.chronicle.queue.impl.single.WriteLock

NO_OP

Fields inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

INIT, TMP

Fields inherited from interface net.openhft.chronicle.core.io.SingleThreadedChecked

DISABLE_SINGLE_THREADED_CHECK

Constructor Summary

Constructors

Constructor and Description
AppendLock(TableStore<?> tableStore, Supplier<net.openhft.chronicle.threads.TimingPauser> pauser, Long timeoutMs)

Method Summary

Modifier and Type	Method and Description
boolean	forceUnlockIfProcessIsDead() forces an unlock only if the process that currently holds the table store lock is no-longer running

Methods inherited from class net.openhft.chronicle.queue.impl.single.TableStoreWriteLock

forceUnlock, forceUnlockQuietly, getLockedBy, lock, locked, unlock

Methods inherited from class net.openhft.chronicle.queue.impl.table.AbstractTSQueueLock

forceUnlock, forceUnlockIfProcessIsDead, isLockedByCurrentProcess, lockedBy, performClose, toString

Methods inherited from class net.openhft.chronicle.core.io.AbstractCloseable

assertCloseable, assertCloseablesClosed, close, createdHere, disableCloseableTracing, enableCloseableTracing, gcAndWaitForCloseablesToClose, isClosed, isClosing, isInUserThread, referenceId, shouldPerformCloseInBackground, shouldWaitForClosed, singleThreadedCheckDisabled, singleThreadedCheckDisabled, singleThreadedCheckReset, threadSafetyCheck, throwExceptionIfClosed, throwExceptionIfClosedInSetter, unmonitor, waitForCloseablesToClose, waitForClosed, warnAndCloseIfNotClosed

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.openhft.chronicle.queue.impl.single.WriteLock

close, isLockedByCurrentProcess

Methods inherited from interface net.openhft.chronicle.core.io.Closeable

close, closeQuietly, closeQuietly

Methods inherited from interface net.openhft.chronicle.core.io.QueryCloseable

isClosed, isClosing

Methods inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

referenceName, temporary

Constructor Detail

AppendLock

public AppendLock(TableStore<?> tableStore,
                  Supplier<net.openhft.chronicle.threads.TimingPauser> pauser,
                  Long timeoutMs)

Method Detail

forceUnlockIfProcessIsDead

public boolean forceUnlockIfProcessIsDead()

Description copied from class: AbstractTSQueueLock

forces an unlock only if the process that currently holds the table store lock is no-longer running

Specified by:

forceUnlockIfProcessIsDead in interface WriteLock

Overrides:

forceUnlockIfProcessIsDead in class AbstractTSQueueLock

Returns:

true if the lock was already unlocked, It will not release the lock if it is held by this process or the process that was holding the lock is no longer running (and we were able to unlock). Otherwise false is returned if the lock is held by this process or another live process.