src/java.base/share/classes/java/lang/Module.java

*** 53,62 ****
--- 53,63 ----
  import java.util.stream.Stream;
  
  import jdk.internal.loader.BuiltinClassLoader;
  import jdk.internal.loader.BootLoader;
  import jdk.internal.loader.ClassLoaders;
+ import jdk.internal.misc.VM;
  import jdk.internal.module.IllegalAccessLogger;
  import jdk.internal.module.ModuleLoaderMap;
  import jdk.internal.module.ServicesCatalog;
  import jdk.internal.module.Resources;
  import jdk.internal.org.objectweb.asm.AnnotationVisitor;
*** 244,259 ****
      }
  
      // --
  
      // special Module to mean "all unnamed modules"
!     private static final Module ALL_UNNAMED_MODULE = new Module(null);
!     private static final Set<Module> ALL_UNNAMED_MODULE_SET = Set.of(ALL_UNNAMED_MODULE);
  
      // special Module to mean "everyone"
!     private static final Module EVERYONE_MODULE = new Module(null);
!     private static final Set<Module> EVERYONE_SET = Set.of(EVERYONE_MODULE);
  
      /**
       * The holder of data structures to support readability, exports, and
       * service use added at runtime with the reflective APIs.
       */
--- 245,303 ----
      }
  
      // --
  
      // special Module to mean "all unnamed modules"
!     private static final Module ALL_UNNAMED_MODULE;
!     private static final Set<Module> ALL_UNNAMED_MODULE_SET;
  
      // special Module to mean "everyone"
!     private static final Module EVERYONE_MODULE;
!     private static final Set<Module> EVERYONE_SET;
! 
!     private static class ArchivedData {
!         private static ArchivedData archivedData;
!         private final Module allUnnamedModule;
!         private final Set<Module> allUnnamedModules;
!         private final Module everyoneModule;
!         private final Set<Module> everyoneSet;
! 
!         private ArchivedData() {
!             this.allUnnamedModule = ALL_UNNAMED_MODULE;
!             this.allUnnamedModules = ALL_UNNAMED_MODULE_SET;
!             this.everyoneModule = EVERYONE_MODULE;
!             this.everyoneSet = EVERYONE_SET;
!         }
! 
!         static void archive() {
!             archivedData = new ArchivedData();
!         }
! 
!         static ArchivedData get() {
!             return archivedData;
!         }
! 
!         static {
!             VM.initializeFromArchive(ArchivedData.class);
!         }
!     }
! 
!     static {
!         ArchivedData archivedData = ArchivedData.get();
!         if (archivedData != null) {
!             ALL_UNNAMED_MODULE = archivedData.allUnnamedModule;
!             ALL_UNNAMED_MODULE_SET = archivedData.allUnnamedModules;
!             EVERYONE_MODULE = archivedData.everyoneModule;
!             EVERYONE_SET = archivedData.everyoneSet;
!         } else {
!             ALL_UNNAMED_MODULE = new Module(null);
!             ALL_UNNAMED_MODULE_SET = Set.of(ALL_UNNAMED_MODULE);
!             EVERYONE_MODULE = new Module(null);
!             EVERYONE_SET = Set.of(EVERYONE_MODULE);
!             ArchivedData.archive();
!         }
!     }
  
      /**
       * The holder of data structures to support readability, exports, and
       * service use added at runtime with the reflective APIs.
       */