/*
* Copyright (c) 2008, 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 6724218
* @summary Fix raise_LCA_above_marks() early termination
* @run main/othervm -Xbatch -XX:CompileCommand=exclude,Test.update Test
*/
public class Test {
Test next = null;
Object value = null;
static boolean _closed = false;
static int size = 0;
static Test list = null;
static int cache_size = 0;
static Test cache = null;
Object get(int i) {
Test t = list;
list = t.next;
size -= 1;
Object o = t.value;
if (i > 0) {
t.next = cache;
t.value = null;
cache = t;
cache_size = +1;
}
return o;
}
void update() {
// Exclude compilation of this one.
if (size == 0) {
Test t;
if (cache_size > 0) {
t = cache;
cache = t.next;
cache_size = -1;
} else {
t = new Test();
}
t.value = new Object();
t.next = list;
list = t;
size += 1;
}
}
synchronized Object test(int i) {
while (true) {
if (_closed) {
return null;
} else if (size > 0) {
return get(i);
}
update();
}
}
public static void main(String argv[]) throws Exception {
Test t = new Test();
int lim = 500000;
Object o;
for (int j = 0; j < lim; j++) {
o = t.test(j&1);
if (o == null) {
throw new Exception("*** Failed on iteration " + j);
}
if ((j&1) == 0) {
t.update();
}
}
}
}