1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   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  *
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  24 
  25 /*
  26  * @test
  27  * @summary Tests how CDS works when critical library classes are replaced with JVMTI ClassFileLoadHook
  28  * @library /test/lib
  29  * @requires vm.cds.archived.java.heap
  30  * @build sun.hotspot.WhiteBox
  31  * @run driver ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox
  32  * @run main/othervm/native ReplaceCriticalClassesForSubgraphs
  33  */
  34 
  35 public class ReplaceCriticalClassesForSubgraphs extends ReplaceCriticalClasses {
  36     public static void main(String args[]) throws Throwable {
  37         ReplaceCriticalClassesForSubgraphs rcc = new ReplaceCriticalClassesForSubgraphs();
  38         rcc.process(args);
  39     }
  40 
  41     public String[] getTests() {
  42         String tests[] = {
  43             // Try to replace classes that are used by the archived subgraph graphs. (CDS should be disabled)
  44             "-early -notshared -subgraph java/lang/module/ResolvedModule jdk.internal.module.ArchivedModuleGraph",
  45             "-early -notshared -subgraph java/lang/Long java.lang.Long$LongCache",
  46 
  47             // CDS should not be disabled -- these critical classes cannot be replaced because
  48             // JvmtiExport::early_class_hook_env() is false.
  49             "-subgraph java/lang/module/ResolvedModule jdk.internal.module.ArchivedModuleGraph",
  50             "-subgraph java/lang/Long java.lang.Long$LongCache",
  51 
  52             // Tests for archived full module graph. We cannot use whitebox, which requires appending to bootclasspath.
  53             // VM will disable full module graph if bootclasspath is appended.
  54             "-nowhitebox -early -notshared -subgraph java/lang/Module jdk.internal.module.ArchivedBootLayer",
  55             "-nowhitebox -early -notshared -subgraph java/lang/ModuleLayer jdk.internal.module.ArchivedBootLayer",
  56             "-nowhitebox -subgraph java/lang/Module jdk.internal.module.ArchivedBootLayer",
  57             "-nowhitebox -subgraph java/lang/ModuleLayer jdk.internal.module.ArchivedBootLayer",
  58         };
  59         return tests;
  60     }
  61 }