/* * Copyright (c) 2017, 2021, 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 When dumping the CDS archive, try to cause garbage collection while classes are being loaded. * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes * @requires vm.cds * @requires vm.jvmti * @run driver GCDuringDump */ import jdk.test.lib.cds.CDSOptions; import jdk.test.lib.process.OutputAnalyzer; import jdk.test.lib.process.ProcessTools; import jdk.test.lib.helpers.ClassFileInstaller; public class GCDuringDump { public static String appClasses[] = { Hello.class.getName(), }; public static String agentClasses[] = { GCDuringDumpTransformer.class.getName(), GCDuringDumpTransformer.MyCleaner.class.getName(), }; public static void main(String[] args) throws Throwable { String agentJar = ClassFileInstaller.writeJar("GCDuringDumpTransformer.jar", ClassFileInstaller.Manifest.fromSourceFile("GCDuringDumpTransformer.mf"), agentClasses); String appJar = ClassFileInstaller.writeJar("GCDuringDumpApp.jar", appClasses); String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ? "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion"; for (int i=0; i<3; i++) { // i = 0 -- run without agent = no extra GCs // i = 1 -- run with agent = cause extra GCs // i = 2 -- run with agent = cause extra GCs + use java.lang.ref.Cleaner String extraArg = (i == 0) ? "-showversion" : "-javaagent:" + agentJar; String extraOption = (i == 0) ? "-showversion" : "-XX:+AllowArchivingWithJavaAgent"; String extraOption2 = (i != 2) ? "-showversion" : "-Dtest.with.cleaner=true"; TestCommon.testDump(appJar, TestCommon.list(Hello.class.getName()), "-XX:+UnlockDiagnosticVMOptions", extraOption, extraOption2, "-Xlog:exceptions=trace", extraArg, "-Xmx32m", gcLog); TestCommon.run( "-cp", appJar, "-Xmx32m", "-Xlog:cds=info", "-XX:+UnlockDiagnosticVMOptions", extraOption, gcLog, Hello.class.getName()) .assertNormalExit(); } } }