1/* 2 * Copyright (c) 2017, Oracle and/or its affiliates. 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 * @test TestAggressiveHeap 26 * @key gc 27 * @bug 8179084 28 * @requires vm.gc.Parallel 29 * @summary Test argument processing for -XX:+AggressiveHeap. 30 * @library /test/lib 31 * @modules java.base java.management 32 * @run driver TestAggressiveHeap 33 */ 34 35import java.lang.management.ManagementFactory; 36import javax.management.MBeanServer; 37import javax.management.ObjectName; 38 39import jdk.test.lib.process.OutputAnalyzer; 40import jdk.test.lib.process.ProcessTools; 41 42public class TestAggressiveHeap { 43 44 public static void main(String args[]) throws Exception { 45 if (canUseAggressiveHeapOption()) { 46 testFlag(); 47 } 48 } 49 50 // Note: Not a normal boolean flag; -XX:-AggressiveHeap is invalid. 51 private static final String option = "-XX:+AggressiveHeap"; 52 53 // Option requires at least 256M, else error during option processing. 54 private static final long minMemory = 256 * 1024 * 1024; 55 56 // bool UseParallelGC = true {product} {command line} 57 private static final String parallelGCPattern = 58 " *bool +UseParallelGC *= *true +\\{product\\} *\\{command line\\}"; 59 60 private static void testFlag() throws Exception { 61 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 62 option, "-XX:+PrintFlagsFinal", "-version"); 63 64 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 65 66 output.shouldHaveExitValue(0); 67 68 String value = output.firstMatch(parallelGCPattern); 69 if (value == null) { 70 throw new RuntimeException( 71 option + " didn't set UseParallelGC as if from command line"); 72 } 73 } 74 75 private static boolean haveRequiredMemory() throws Exception { 76 MBeanServer server = ManagementFactory.getPlatformMBeanServer(); 77 ObjectName os = new ObjectName("java.lang", "type", "OperatingSystem"); 78 Object attr = server.getAttribute(os, "TotalPhysicalMemorySize"); 79 String value = attr.toString(); 80 long memory = Long.parseLong(value); 81 return memory >= minMemory; 82 } 83 84 private static boolean canUseAggressiveHeapOption() throws Exception { 85 if (!haveRequiredMemory()) { 86 System.out.println( 87 "Skipping test of " + option + " : insufficient memory"); 88 return false; 89 } 90 return true; 91 } 92} 93 94