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