/* * Copyright (c) 2018, 2020, 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 Tests how CDS works when critical library classes are replaced with JVMTI ClassFileLoadHook * @library /test/lib * @requires vm.cds.archived.java.heap * @build sun.hotspot.WhiteBox * @run driver ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox * @run main/othervm/native ReplaceCriticalClassesForSubgraphs */ public class ReplaceCriticalClassesForSubgraphs extends ReplaceCriticalClasses { public static void main(String args[]) throws Throwable { ReplaceCriticalClassesForSubgraphs rcc = new ReplaceCriticalClassesForSubgraphs(); rcc.process(args); } public String[] getTests() { String tests[] = { // Try to replace classes that are used by the archived subgraph graphs. (CDS should be disabled) "-early -notshared -subgraph java/lang/module/ResolvedModule jdk.internal.module.ArchivedModuleGraph", "-early -notshared -subgraph java/lang/Long java.lang.Long$LongCache", // CDS should not be disabled -- these critical classes cannot be replaced because // JvmtiExport::early_class_hook_env() is false. "-subgraph java/lang/module/ResolvedModule jdk.internal.module.ArchivedModuleGraph", "-subgraph java/lang/Long java.lang.Long$LongCache", // Tests for archived full module graph. We cannot use whitebox, which requires appending to bootclasspath. // VM will disable full module graph if bootclasspath is appended. "-nowhitebox -early -notshared -subgraph java/lang/Module jdk.internal.module.ArchivedBootLayer", "-nowhitebox -early -notshared -subgraph java/lang/ModuleLayer jdk.internal.module.ArchivedBootLayer", "-nowhitebox -subgraph java/lang/Module jdk.internal.module.ArchivedBootLayer", "-nowhitebox -subgraph java/lang/ModuleLayer jdk.internal.module.ArchivedBootLayer", }; return tests; } }