1 /* 2 * Copyright (c) 2018, 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 /* 26 * @test 27 * @summary Test how CDS dumping handles the existence of humongous G1 regions. 28 * @library /test/lib /test/hotspot/jtreg/runtime/appcds /test/hotspot/jtreg/runtime/appcds/test-classes 29 * @requires vm.cds.archived.java.heap 30 * @requires vm.flavor != "minimal" 31 * @modules java.base/jdk.internal.misc 32 * jdk.jartool/sun.tools.jar 33 * java.management 34 * @build HumongousDuringDumpTransformer Hello 35 * @run main/othervm/timeout=240 HumongousDuringDump 36 */ 37 38 import jdk.test.lib.cds.CDSOptions; 39 import jdk.test.lib.process.OutputAnalyzer; 40 import jdk.test.lib.process.ProcessTools; 41 42 public class HumongousDuringDump { 43 public static String appClasses[] = { 44 "Hello", 45 }; 46 public static String agentClasses[] = { 47 "HumongousDuringDumpTransformer", 48 }; 49 50 public static void main(String[] args) throws Throwable { 51 String agentJar = 52 ClassFileInstaller.writeJar("HumongousDuringDumpTransformer.jar", 53 ClassFileInstaller.Manifest.fromSourceFile("HumongousDuringDumpTransformer.mf"), 54 agentClasses); 55 56 String appJar = 57 ClassFileInstaller.writeJar("HumongousDuringDumpApp.jar", appClasses); 58 59 String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ? 60 "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion"; 61 62 String extraArg = "-javaagent:" + agentJar; 63 String extraOption = "-XX:+AllowArchivingWithJavaAgent"; 64 65 OutputAnalyzer out = 66 TestCommon.testDump(appJar, TestCommon.list("Hello"), 67 "-XX:+UnlockDiagnosticVMOptions", extraOption, 68 "-Xlog:gc+region+cds", 69 "-Xlog:gc+region=trace", 70 extraArg, "-Xmx64m", gcLog); 71 out.shouldContain("(Unmovable) humongous regions have been found and may lead to fragmentation"); 72 out.shouldContain("All free regions should be at the top end of the heap, but we found holes."); 73 out.shouldMatch("gc,region,cds. HeapRegion .* HUM. hole"); 74 String pattern = "gc,region,cds. HeapRegion .*hole"; 75 out.shouldMatch(pattern); 76 out.shouldNotMatch(pattern + ".*unexpected"); 77 78 TestCommon.run( 79 "-cp", appJar, 80 "-verbose", 81 "-Xmx64m", 82 "-XX:+PrintSharedSpaces", 83 "-XX:+UnlockDiagnosticVMOptions", extraOption, 84 gcLog, 85 "Hello") 86 .assertNormalExit(); 87 } 88 } 89