/* * Copyright (c) 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. */ /** * @test TestCommonGCLoads * @summary Test GC state load commoning works * @key gc * @requires vm.flavor == "server" * @requires vm.gc.Shenandoah * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:-TieredCompilation * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC * -XX:-ShenandoahCommonGCStateLoads * TestCommonGCLoads * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:-TieredCompilation * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC * -XX:+ShenandoahCommonGCStateLoads * TestCommonGCLoads */ public class TestCommonGCLoads { static Object d = new Object(); static Target t1 = new Target(); static Target t2 = new Target(); static Target t3 = new Target(); static Target t4 = new Target(); static Target t5 = new Target(); static void test() { t1.field = d; t2.field = d; t3.field = d; t4.field = d; t5.field = d; } static public void main(String[] args) { for (int i = 0; i < 100_000; i++) { test(); } } static class Target { Object field; } }