Module org.cojen.tupl

Package org.cojen.tupl.util

Class Clutch.Pack

java.lang.Object

org.cojen.tupl.util.Latch

org.cojen.tupl.util.Clutch.Pack

Enclosing class:

Clutch

public static class Clutch.Pack
extends Latch

Sharable object for supporting contended clutches. Memory overhead (in bytes) is proportional to (number of slots) * (number of cores). The number of slots should be at least 16, to minimize cache line contention. As a convenience, this class also extends the Latch class, but the latching features aren't used here.

Nested Class Summary

Nested classes/interfaces inherited from class org.cojen.tupl.util.Latch

Latch.Condition

Field Summary

Fields inherited from class org.cojen.tupl.util.Latch

EXCLUSIVE, SHARED, UNLATCHED

Constructor Summary

Constructors

Constructor	Description
Pack(int numSlots)
Pack(int numSlots, int cores)

Method Summary

Methods inherited from class org.cojen.tupl.util.Latch

acquireExclusive, acquireExclusiveInterruptibly, acquireShared, acquireSharedInterruptibly, acquireSharedUncontended, acquireSharedUncontendedNanos, downgrade, hasQueuedThreads, release, releaseEither, releaseExclusive, releaseShared, toString, tryAcquireExclusive, tryAcquireExclusiveNanos, tryAcquireShared, tryAcquireSharedNanos, tryUpgrade, uponExclusive

Methods inherited from class java.lang.Object

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

Constructor Details

Pack

public Pack(int numSlots)

Parameters:

numSlots - amount of contended clutches that this pack can support

Pack

public Pack(int numSlots,
 int cores)

Parameters:

numSlots - amount of contended clutches that this pack can support

cores - must be at least 1 CPU core