Package com.ibm.asyncutil.locks

Interface AsyncReadWriteLock.WriteLockToken

All Superinterfaces:

AsyncLock.LockToken, AutoCloseable

Enclosing interface:

AsyncReadWriteLock

public static interface AsyncReadWriteLock.WriteLockToken
extends AsyncLock.LockToken

A lock token indicating that the associated lock has been exclusively acquired for writer access. Once the protected action is completed, the lock may be released by calling releaseLock()

Method Summary

Modifier and Type	Method	Description
AsyncReadWriteLock.ReadLockToken	downgradeLock()	Downgrades this write lock acquisition to a read lock acquisition without any intermediate release.
void	releaseLock()	Releases this write lock, allowing readers or other writers to acquire it.

Methods inherited from interface com.ibm.asyncutil.locks.AsyncLock.LockToken

close

Method Detail

releaseLock

void releaseLock()

Releases this write lock, allowing readers or other writers to acquire it.

Specified by:

releaseLock in interface AsyncLock.LockToken

downgradeLock

AsyncReadWriteLock.ReadLockToken downgradeLock()

Downgrades this write lock acquisition to a read lock acquisition without any intermediate release. This may allow other waiting readers to proceed with their acquisitions. Other writers, however, may not proceed until the returned read lock token (and any others that become acquired) is released.

The returned AsyncReadWriteLock.ReadLockToken becomes the principle token for this acquisition; this calling WriteLockToken should not be released afterwards, and may be abandoned freely.

Returns:

a ReadLockToken representing read lock exclusivity on the lock