Class SyncData

java.lang.Object
  SyncData

 class SyncData
extends Object

Contains synchronization data.

Field Summary

Semaphore	accessShared Only one task can use the shared memory buffer at a time.
Semaphore	eaterDone Semaphore released when a consumer decides to stop consuming.
Semaphore	emptyCount This semaphore is increased when a letter is consumed.
Semaphore	fillCount This semaphore is increased when a new letter is produced.
int	N_eaters Number of vowel eaters.
int	N_givers Number of vowel producers.
int	N_memSize Size of the shared memory buffer.
boolean	pleaseContinue Flag to stop producers.
LinkedList<Character>	sharedMemory

Constructor Summary

SyncData(int memSize, int eaters, int givers)
Constructor.

Method Summary

void	pleaseStop() Ask producers to stop producing vowels.

Methods inherited from class java.lang.Object

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

Field Detail

sharedMemory

public LinkedList<Character> sharedMemory

N_memSize

public int N_memSize

Size of the shared memory buffer.

N_eaters

public int N_eaters

Number of vowel eaters.

N_givers

public int N_givers

Number of vowel producers.

accessShared

public Semaphore accessShared

Only one task can use the shared memory buffer at a time.

fillCount

public Semaphore fillCount

This semaphore is increased when a new letter is produced.

emptyCount

public Semaphore emptyCount

This semaphore is increased when a letter is consumed.

eaterDone

public Semaphore eaterDone

Semaphore released when a consumer decides to stop consuming.

pleaseContinue

public boolean pleaseContinue

Flag to stop producers.

Constructor Detail

SyncData

public SyncData(int memSize,
                int eaters,
                int givers)

Constructor.

Method Detail

pleaseStop

public void pleaseStop()

Ask producers to stop producing vowels.