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