net.openhft.lang.locks

Interface ReadWriteUpdateLockingStrategy

All Superinterfaces:

LockingStrategy, ReadWriteLockingStrategy

All Known Subinterfaces:

ReadWriteUpdateWithWaitsLockingStrategy

All Known Implementing Classes:

VanillaReadWriteUpdateWithWaitsLockingStrategy

public interface ReadWriteUpdateLockingStrategy
extends ReadWriteLockingStrategy

Logic of read-write-update lock state transitions.

Read lock - could be several at the same time. Update lock - doesn't block reads, but couldn't be several update locks at the same time Write lock - exclusive

Method Summary

Modifier and Type	Method and Description
<T> void	downgradeUpdateToReadLock(NativeAtomicAccess<T> access, T t, long offset)
<T> void	downgradeWriteToUpdateLock(NativeAtomicAccess<T> access, T t, long offset)
boolean	isUpdateLocked(long state)
<T> boolean	tryUpdateLock(NativeAtomicAccess<T> access, T t, long offset)
<T> boolean	tryUpgradeReadToUpdateLock(NativeAtomicAccess<T> access, T t, long offset)
<T> boolean	tryUpgradeUpdateToWriteLock(NativeAtomicAccess<T> access, T t, long offset)
<T> void	updateUnlock(NativeAtomicAccess<T> access, T t, long offset)

Methods inherited from interface net.openhft.lang.locks.ReadWriteLockingStrategy

downgradeWriteToReadLock, isReadLocked, isWriteLocked, readLockCount, readUnlock, tryReadLock, tryUpgradeReadToWriteLock, tryWriteLock, writeUnlock

Methods inherited from interface net.openhft.lang.locks.LockingStrategy

getState, isLocked, lockCount, reset, resetState, sizeInBytes, toString, tryLock, unlock

Method Detail

tryUpdateLock

<T> boolean tryUpdateLock(NativeAtomicAccess<T> access,
                          T t,
                          long offset)

tryUpgradeReadToUpdateLock

<T> boolean tryUpgradeReadToUpdateLock(NativeAtomicAccess<T> access,
                                       T t,
                                       long offset)

tryUpgradeUpdateToWriteLock

<T> boolean tryUpgradeUpdateToWriteLock(NativeAtomicAccess<T> access,
                                        T t,
                                        long offset)

updateUnlock

<T> void updateUnlock(NativeAtomicAccess<T> access,
                      T t,
                      long offset)

downgradeUpdateToReadLock

<T> void downgradeUpdateToReadLock(NativeAtomicAccess<T> access,
                                   T t,
                                   long offset)

downgradeWriteToUpdateLock

<T> void downgradeWriteToUpdateLock(NativeAtomicAccess<T> access,
                                    T t,
                                    long offset)

isUpdateLocked

boolean isUpdateLocked(long state)