Package com.ibm.asyncutil.locks

Provides asynchronous analogues of synchronization primitives. These primitives use CompletionStage to coordinate instead of blocking.

Interface Summary

Interface	Description
AsyncEpoch	A concurrency mechanism which maintains a period of activity -- an epoch -- during which participants may successfully enter it, that later can be terminated.
AsyncEpoch.EpochToken	A token signifying successful entry in the active epoch.
AsyncLock	An asynchronously acquirable mutual exclusion lock.
AsyncLock.LockToken	A lock token indicating that the associated lock has been exclusively acquired.
AsyncNamedLock<T>	A mechanism used to acquire mutual exclusion locks shared by a common name.
AsyncNamedReadWriteLock<T>	A mechanism used to acquire read-write locks shared by a common name.
AsyncReadWriteLock	An asynchronously acquirable read-write lock.
AsyncReadWriteLock.ReadLockToken	A lock token indicating that the associated lock has been acquired for reader access.
AsyncReadWriteLock.WriteLockToken	A lock token indicating that the associated lock has been exclusively acquired for writer access.
AsyncSemaphore	An asynchronously acquirable counting semaphore
AsyncStampedLock	An asynchronously acquirable read-write lock which additionally provides an optimistic read mode.
AsyncStampedLock.Stamp	An object indicating a successful optimistic read attempt.

Class Summary

Class	Description
AsyncFunnel<T>	Enforces that a single asynchronous computation occurs at a time, allowing others to observe it.
FairAsyncLock	An AsyncLock which enforces fairness in its acquisition ordering
FairAsyncNamedLock<T>	An implementation of the AsyncNamedLock interface which enforces fair ordering in lock acquisition.
FairAsyncNamedReadWriteLock<T>	An implementation of the AsyncNamedReadWriteLock interface which enforces fair acquisitions (i.e.
FairAsyncReadWriteLock	An implementation of the AsyncReadWriteLock interface which enforces reader/writer fairness -- i.e.
FairAsyncSemaphore	An AsyncSemaphore implementation which is strictly fair: if the permits requested by an FairAsyncSemaphore.acquire(long) cannot be fulfilled immediately, all subsequent acquires must wait for their predecessor to be fulfilled.
FairAsyncStampedLock	An AsyncStampedLock implementation which provides fair ordering of acquisitions, like that of FairAsyncReadWriteLock.