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CondVar.javaAPI DocExample3193Thu Feb 04 16:10:38 GMT 1999None

CondVar

public class CondVar extends Object

Fields Summary
private BusyFlag
SyncVar
Constructors Summary
public CondVar()

		this(new BusyFlag());
public CondVar(BusyFlag sv)

		SyncVar = sv;
Methods Summary
public synchronized voidcvBroadcast(BusyFlag sv)

		// You must own the lock in order to use this method
		if (sv.getBusyFlagOwner() != Thread.currentThread()) {
			throw new IllegalMonitorStateException("current thread not owner");
		}
		notifyAll();
public voidcvBroadcast()

		cvBroadcast(SyncVar);
public voidcvSignal()

		cvSignal(SyncVar);
public synchronized voidcvSignal(BusyFlag sv)

		// You must own the lock in order to use this method
		if (sv.getBusyFlagOwner() != Thread.currentThread()) {
			throw new IllegalMonitorStateException("current thread not owner");
		}
		notify();
public voidcvTimedWait(int millis)

		cvTimedWait(SyncVar, millis);
public voidcvTimedWait(BusyFlag sv, int millis)

		int i = 0;
		InterruptedException errex = null;

		synchronized (this) {
			// You must own the lock in order to use this method
			if (sv.getBusyFlagOwner() != Thread.currentThread()) {
				throw new IllegalMonitorStateException("current thread not owner");
			}

			// Release the lock (Completely)
			while (sv.getBusyFlagOwner() == Thread.currentThread()) {
				i++;
				sv.freeBusyFlag();
			}
		
			// Use wait() method	
			try {
				if (millis == 0) {
					wait();
				} else {
					wait(millis);
				}
			} catch (InterruptedException iex) {
				errex = iex;
			}
		}
	 
		// Obtain the lock (Return to original state)
		for (; i>0; i--) {
			sv.getBusyFlag();
		}

		if (errex != null) throw errex;
		return;
public voidcvWait()

		cvTimedWait(SyncVar, 0);
public voidcvWait(BusyFlag sv)

		cvTimedWait(sv, 0);