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/*
* Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code 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 code 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 in the LICENSE file that
* accompanied this code).
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 4076283
* @summary java.lang.ref.SoftReference should reliably prevent
* OutOfMemoryErrors
* @author Peter Jones
* @author Mark Reinhold
*/
/* If this test fails, an OutOfMemoryError will be thrown */
import java.lang.ref.SoftReference;
public class Bash {
static class TestReference extends SoftReference {
public static TestReference head;
public TestReference next;
public TestReference(Object referent) {
super(referent);
next = head;
head = this;
}
}
static final int NUM_BLOCKS = 2048;
static final int BLOCK_SIZE = 32768;
public static void main(String[] args) throws Exception {
for (int i = 0; i < NUM_BLOCKS; ++ i) {
TestReference ref = new TestReference(new byte[BLOCK_SIZE]);
}
int emptyCount = 0;
int fullCount = 0;
for (TestReference r = TestReference.head; r != null; r = r.next) {
if (r.get() == null) emptyCount++;
else fullCount++;
}
System.err.println(fullCount + " full, " + emptyCount + " empty ");
}
}
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