/* * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ /* * @test * @summary Test how CDS dumping handles the existence of humongous G1 regions. * @library /test/lib /test/hotspot/jtreg/runtime/cds /test/hotspot/jtreg/runtime/cds/test-classes * @requires vm.cds.archived.java.heap * @requires vm.flavor != "minimal" * @modules java.base/jdk.internal.misc * jdk.jartool/sun.tools.jar * java.management * @build HumongousDuringDumpTransformer Hello * @run main/othervm/timeout=240 HumongousDuringDump */ import jdk.test.lib.cds.CDSOptions; import jdk.test.lib.process.OutputAnalyzer; import jdk.test.lib.process.ProcessTools; public class HumongousDuringDump { public static String appClasses[] = { "Hello", }; public static String agentClasses[] = { "HumongousDuringDumpTransformer", }; public static void main(String[] args) throws Throwable { String agentJar = ClassFileInstaller.writeJar("HumongousDuringDumpTransformer.jar", ClassFileInstaller.Manifest.fromSourceFile("HumongousDuringDumpTransformer.mf"), agentClasses); String appJar = ClassFileInstaller.writeJar("HumongousDuringDumpApp.jar", appClasses); String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ? "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion"; String extraArg = "-javaagent:" + agentJar; String extraOption = "-XX:+AllowArchivingWithJavaAgent"; OutputAnalyzer out = TestCommon.testDump(appJar, TestCommon.list("Hello"), "-XX:+UnlockDiagnosticVMOptions", extraOption, "-Xlog:gc+region+cds", "-Xlog:gc+region=trace", extraArg, "-Xmx64m", gcLog); out.shouldContain("(Unmovable) humongous regions have been found and may lead to fragmentation"); out.shouldContain("All free regions should be at the top end of the heap, but we found holes."); out.shouldMatch("gc,region,cds. HeapRegion .* HUM. hole"); String pattern = "gc,region,cds. HeapRegion .*hole"; out.shouldMatch(pattern); out.shouldNotMatch(pattern + ".*unexpected"); TestCommon.run( "-cp", appJar, "-verbose", "-Xmx64m", "-XX:+PrintSharedSpaces", "-XX:+UnlockDiagnosticVMOptions", extraOption, gcLog, "Hello") .assertNormalExit(); } }