1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 /* 26 * @test TestRegionSampling 27 * @requires vm.gc.Shenandoah & !vm.graal.enabled 28 * 29 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 30 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive 31 * -XX:+ShenandoahDegeneratedGC 32 * TestRegionSampling 33 * 34 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 35 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive 36 * -XX:-ShenandoahDegeneratedGC 37 * TestRegionSampling 38 */ 39 40 /* 41 * @test TestRegionSampling 42 * @requires vm.gc.Shenandoah & !vm.graal.enabled 43 * 44 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 45 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive 46 * TestRegionSampling 47 * 48 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 49 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static 50 * TestRegionSampling 51 * 52 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 53 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact 54 * TestRegionSampling 55 * 56 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 57 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive 58 * TestRegionSampling 59 */ 60 61 /* 62 * @test TestRegionSampling 63 * @requires vm.gc.Shenandoah & !vm.graal.enabled 64 * 65 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 66 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive 67 * TestRegionSampling 68 * 69 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahRegionSampling 70 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu 71 * TestRegionSampling 72 * 73 */ 74 75 public class TestRegionSampling { 76 77 static final long TARGET_MB = Long.getLong("target", 2_000); // 2 Gb allocation 78 79 static volatile Object sink; 80 81 public static void main(String[] args) throws Exception { 82 long count = TARGET_MB * 1024 * 1024 / 16; 83 for (long c = 0; c < count; c++) { 84 sink = new Object(); 85 } 86 } 87 88 }