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/*
* Copyright (c) 2017, 2018, Red Hat, Inc. 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.
*/
package gc.epsilon;
/**
* @test TestObjects
* @key gc randomness
* @requires vm.gc.Epsilon & !vm.graal.enabled
* @summary Epsilon is able to allocate objects, and does not corrupt their state
* @library /test/lib
*
* @run main/othervm -XX:+UseTLAB -Xmx256m
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*
* @run main/othervm -XX:+UseTLAB -Xmx256m
* -Xint
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*
* @run main/othervm -XX:+UseTLAB -Xmx256m
* -Xbatch -Xcomp -XX:TieredStopAtLevel=1
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*
* @run main/othervm -XX:+UseTLAB -Xmx256m
* -Xbatch -Xcomp -XX:-TieredCompilation
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*
* @run main/othervm -XX:-UseTLAB -Xmx256m
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*
* @run main/othervm -XX:-UseTLAB -Xmx256m
* -Xint
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*
* @run main/othervm -XX:-UseTLAB -Xmx256m
* -Xbatch -Xcomp -XX:TieredStopAtLevel=1
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*
* @run main/othervm -XX:-UseTLAB -Xmx256m
* -Xbatch -Xcomp -XX:-TieredCompilation
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* gc.epsilon.TestObjects
*/
import java.util.Random;
import jdk.test.lib.Utils;
public class TestObjects {
static int COUNT = Integer.getInteger("count", 1_000_000); // ~24 MB allocation
static MyObject[] arr;
public static void main(String[] args) throws Exception {
Random r = Utils.getRandomInstance();
arr = new MyObject[COUNT];
for (int c = 0; c < COUNT; c++) {
arr[c] = new MyObject(r.nextInt());
}
r = new Random(Utils.SEED);
for (int c = 0; c < COUNT; c++) {
int expected = r.nextInt();
int actual = arr[c].id();
if (expected != actual) {
throw new IllegalStateException("Failure: expected = " + expected + ", actual = " + actual);
}
}
}
public static class MyObject {
int id;
public MyObject(int id) {
this.id = id;
}
public int id() {
return id;
}
}
}
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