drcl.comp
Class LockPack

java.lang.Object
  drcl.comp.LockPack

All Implemented Interfaces:

Component.Locks

public class LockPack

extends java.lang.Object

implements Component.Locks

Data structure of a lock. Multiple locks can be chained to form a linked list.

Field Summary

int	counter The number of times the holder thread grabs the lock.
WorkerThread	holder Thread that holds the lock of the target object.
int	lockReqCount The number of threads competing for the lock of the target object.
LockPack	next Next lock pack in the chain.
java.lang.Object	target The target object being locked or waited on.
int	waitCount The number of threads waiting on the target object.

Constructor Summary

LockPack(java.lang.Object target_)

Method Summary

java.lang.String	printAll() Returns all the locks' and waiting threads' information.
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

target

public java.lang.Object target

The target object being locked or waited on.

holder

public WorkerThread holder

Thread that holds the lock of the target object.

counter

public int counter

The number of times the holder thread grabs the lock.

lockReqCount

public int lockReqCount

The number of threads competing for the lock of the target object.

waitCount

public int waitCount

The number of threads waiting on the target object.

next

public LockPack next

Next lock pack in the chain.

Constructor Detail

LockPack

public LockPack(java.lang.Object target_)

Method Detail

printAll

public java.lang.String printAll()

Description copied from interface: Component.Locks

Returns all the locks' and waiting threads' information.

Specified by:

printAll in interface Component.Locks

toString

public java.lang.String toString()