[Jake2-commits] jake2/test/jake2/render DisposeBuffer.java,NONE,1.1

[Carsten W. <ca...@us...>]

Update of /cvsroot/jake2/jake2/test/jake2/render
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv5642/test/jake2/render

Added Files:
	DisposeBuffer.java 
Log Message:
simple test to see what happens with direct buffers (garbage collected?).
use "top" on linux or "Task Manager" on Win32. The answer is yes.

--- NEW FILE: DisposeBuffer.java ---
/*
 * Created on May 13, 2005
 *
 */
package jake2.render;

import java.nio.Buffer;
import java.nio.ByteBuffer;

/**
 * @author cwei
 *
 */
public class DisposeBuffer {

    // 160 MB direct buffers
    static int SIZE = 1024 * 1024;
    static int COUNT = 160;
    
    public static void main(String[] args) {
        System.out.println("DirectBuffer allocation.");
        Buffer[] buf = new Buffer[COUNT];
        Runtime run = Runtime.getRuntime();
        System.gc();
        for (int i = 0; i < COUNT; i++) {
            buf[i] = ByteBuffer.allocateDirect(SIZE);
        }
        System.gc();
        System.out.println((run.totalMemory() / 1024) + "KB heap");
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
        }
        System.out.println("DirectBuffer dispose.");
        for (int i = 0; i < COUNT; i++) {
            buf[i] = null;
        }
        System.gc();
        System.out.println((run.totalMemory() / 1024) + "KB heap");
        try {
            Thread.sleep(20000);
        } catch (InterruptedException e) {
        }
    }
}