1 /* 2 * Copyright (c) 2017, 2019, 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 package gc.arguments; 25 26 /* 27 * @test TestAggressiveHeap 28 * @key gc 29 * @bug 8179084 30 * @requires vm.gc.Parallel 31 * @summary Test argument processing for -XX:+AggressiveHeap. 32 * @library /test/lib 33 * @library / 34 * @modules java.base java.management 35 * @run driver gc.arguments.TestAggressiveHeap 36 */ 37 38 import java.lang.management.ManagementFactory; 39 import javax.management.MBeanServer; 40 import javax.management.ObjectName; 41 42 import jdk.test.lib.process.OutputAnalyzer; 43 import jdk.test.lib.process.ProcessTools; 44 import jtreg.SkippedException; 45 46 public class TestAggressiveHeap { 47 main(String args[])48 public static void main(String args[]) throws Exception { 49 if (canUseAggressiveHeapOption()) { 50 testFlag(); 51 } 52 } 53 54 // Note: Not a normal boolean flag; -XX:-AggressiveHeap is invalid. 55 private static final String option = "-XX:+AggressiveHeap"; 56 57 // Option requires at least 256M, else error during option processing. 58 private static final long minMemory = 256 * 1024 * 1024; 59 60 // Setting the heap to half of the physical memory is not suitable for 61 // a test environment with many tests running concurrently, setting to 62 // half of the required size instead. 63 private static final String heapSizeOption = "-Xmx128M"; 64 65 // bool UseParallelGC = true {product} {command line} 66 private static final String parallelGCPattern = 67 " *bool +UseParallelGC *= *true +\\{product\\} *\\{command line\\}"; 68 testFlag()69 private static void testFlag() throws Exception { 70 ProcessBuilder pb = GCArguments.createJavaProcessBuilder( 71 option, heapSizeOption, "-XX:+PrintFlagsFinal", "-version"); 72 73 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 74 75 output.shouldHaveExitValue(0); 76 77 String value = output.firstMatch(parallelGCPattern); 78 if (value == null) { 79 throw new RuntimeException( 80 option + " didn't set UseParallelGC as if from command line"); 81 } 82 } 83 haveRequiredMemory()84 private static boolean haveRequiredMemory() throws Exception { 85 MBeanServer server = ManagementFactory.getPlatformMBeanServer(); 86 ObjectName os = new ObjectName("java.lang", "type", "OperatingSystem"); 87 Object attr = server.getAttribute(os, "TotalPhysicalMemorySize"); 88 String value = attr.toString(); 89 long memory = Long.parseLong(value); 90 return memory >= minMemory; 91 } 92 canUseAggressiveHeapOption()93 private static boolean canUseAggressiveHeapOption() throws Exception { 94 if (!haveRequiredMemory()) { 95 throw new SkippedException("Skipping test of " + option + " : insufficient memory"); 96 } 97 return true; 98 } 99 } 100 101