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 TestHeapUncommit 26 * @summary Acceptance tests: collector can withstand allocation 27 * @key gc 28 * 29 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCMode=passive -XX:ShenandoahUncommitDelay=0 -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify TestHeapUncommit 30 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCMode=passive -XX:ShenandoahUncommitDelay=0 -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify TestHeapUncommit 31 * 32 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahUncommitDelay=0 -XX:+ShenandoahVerify TestHeapUncommit 33 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=static -XX:ShenandoahUncommitDelay=0 -XX:+ShenandoahVerify TestHeapUncommit 34 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=compact -XX:ShenandoahUncommitDelay=0 -XX:+ShenandoahVerify TestHeapUncommit 35 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=aggressive -XX:ShenandoahUncommitDelay=0 -XX:+ShenandoahVerify TestHeapUncommit 36 * 37 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCMode=passive -XX:ShenandoahUncommitDelay=0 TestHeapUncommit 38 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahUncommitDelay=0 TestHeapUncommit 39 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=static -XX:ShenandoahUncommitDelay=0 TestHeapUncommit 40 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=compact -XX:ShenandoahUncommitDelay=0 TestHeapUncommit 41 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCHeuristics=aggressive -XX:ShenandoahUncommitDelay=0 TestHeapUncommit 42 * 43 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCMode=traversal -XX:ShenandoahUncommitDelay=0 TestHeapUncommit 44 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCMode=traversal -XX:ShenandoahUncommitDelay=0 -XX:+ShenandoahVerify TestHeapUncommit 45 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -XX:+ShenandoahUncommit -XX:ShenandoahGCMode=traversal -XX:ShenandoahGCHeuristics=aggressive -XX:ShenandoahUncommitDelay=0 TestHeapUncommit 46 * 47 */ 48 49 import java.util.Random; 50 51 public class TestHeapUncommit { 52 53 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation 54 55 static volatile Object sink; 56 57 public static void main(String[] args) throws Exception { 58 final int min = 0; 59 final int max = 384 * 1024; 60 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2)); 61 62 Random r = new Random(); 63 for (long c = 0; c < count; c++) { 64 sink = new int[min + r.nextInt(max - min)]; 65 } 66 } 67 68 }