tachyon.worker

Class BlocksLocker

java.lang.Object

tachyon.worker.BlocksLocker

public class BlocksLocker
extends Object

Handle local block locking.

Constructor Summary

Constructors

Constructor and Description
BlocksLocker(WorkerStorage workerStorage, int userId)

Method Summary

Modifier and Type	Method and Description
int	lock(long blockId) Lock a block.
boolean	locked(long blockId) Check if the block is locked in the local memory
void	unlock(long blockId, int lockId) Unlock a block with a lock id.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlocksLocker

public BlocksLocker(WorkerStorage workerStorage,
                    int userId)

Method Detail

lock

public int lock(long blockId)

Lock a block.

Parameters:

blockId - The id of the block.

Returns:

The lockId of this lock.

locked

public boolean locked(long blockId)

Check if the block is locked in the local memory

Parameters:

blockId - The id of the block

Returns:

true if the block is locked, false otherwise

unlock

public void unlock(long blockId,
                   int lockId)

Unlock a block with a lock id.

Parameters:

blockId - The id of the block.

lockId - The lock id of the lock.