Java Memory fillMemory()

Description

Fills memory and returns an object that refers to all of what was allocated.

License

Open Source License

Declaration

public static Object fillMemory() 

Method Source Code

//package com.java2s;
/*/*from   w  w  w .  j  a  va2s . com*/
 *
 *
 * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation. 
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt). 
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA 
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 */

public class Main {
    /**
     * Fills memory and returns an object that refers to all of what was 
     * allocated. The intent is that all subsequent allocations will cause 
     * OutOfMemoryError until the reference to the returned object is 
     * discarded.
     */
    public static Object fillMemory() {
        byte[][] arrays = new byte[100][];
        int size = 1 << 30;
        int idx = 0;

        while (true) {
            try {
                while (true) {
                    arrays[idx++] = new byte[size];
                    // p(size);
                }
            } catch (OutOfMemoryError oome) {
                if (size == 0) {
                    break;
                } else {
                    size /= 2;
                }
            }
        }
        return arrays;
    }
}

Related

1. compactMemory()
2. correctMemoryValue(int memory)
3. displayMemory(String label, long bytes)
4. dumpMemory()
5. dumpMemoryInfo(String msg)
6. isDefaultMemoryCardDrive(String aRoot)
7. isInMemoryDatabase(final String databasePath)
8. isMemoryAccess(final String value)
9. isMemoryData(String metric)