Module org.apache.jena.serviceplugins

Package org.apache.jena.sparql.service.enhancer.impl.util

Class LockUtils

java.lang.Object

org.apache.jena.sparql.service.enhancer.impl.util.LockUtils

public class LockUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
LockUtils()

Method Summary

Modifier and Type	Method	Description
static <T> T	runWithLock(Lock lock, Callable<T> action)	Perform an action which requires acquisition of a lock first.
static void	runWithLock(Lock lock, ThrowingRunnable action)	Run an action after locking; eventually the lock is unlocked in a finally block
static <T, L extends Lock> T	runWithMgmtLock(L lock, Consumer<? super L> forceUnlock, Duration duration, Callable<T> action)	Run this action with a short-lived locked.

Methods inherited from class java.lang.Object

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

Constructor Details

LockUtils

public LockUtils()

Method Details

runWithLock

public static <T> T runWithLock(Lock lock,
 Callable<T> action)

Perform an action which requires acquisition of a lock first. An attempt is made to acquire the lock. If this fails then the action is not run. Upon completion of the action (successful or exceptional) the lock is released again.

runWithLock

public static void runWithLock(Lock lock,
 ThrowingRunnable action)

Run an action after locking; eventually the lock is unlocked in a finally block

runWithMgmtLock

public static <T,
L extends Lock> T runWithMgmtLock(L lock,
 Consumer<? super L> forceUnlock,
 Duration duration,
 Callable<T> action)

Run this action with a short-lived locked. If the lock cannot be acquired within the given time it is considered stale and forcibly unlocked. Subsequently another attempt is made to acquire the lock.