/**
 * Writer.java
 *
 * A writer to the database.
 *
 * Figure 6.16
 *
 * @author Gagne, Galvin, Silberschatz
 * Operating System Concepts with Java - Eighth Edition
 * Copyright John Wiley & Sons - 2010.
 */

public class Writer implements Runnable
{
	private ReadWriteLock 	server;
	private int       		writerNum;
	
	public Writer(int w, ReadWriteLock db) {
		writerNum = w;
		server = db;
	}
	
	public void run() {
		while (true)
		{
			SleepUtilities.nap();
			
			System.out.println("writer " + writerNum + " wants to write.");
			server.acquireWriteLock(writerNum);
			
			// you have access to write to the database
			// write for awhile ...
			SleepUtilities.nap();
			
			server.releaseWriteLock(writerNum);
		}
	}
	
	
}