private static Field getReflectionSlotField(Class<?> reflectionClass) {
   try {
     Field field = reflectionClass.getDeclaredField("slot");
     field.setAccessible(true);
     return field;
   } catch (NoSuchFieldException | SecurityException e) {
     throw new GraalInternalError(e);
   }
 }
 public ResolvedJavaMethod lookupJavaConstructor(Constructor<?> reflectionConstructor) {
   try {
     Class<?> holder = reflectionConstructor.getDeclaringClass();
     final int slot = reflectionConstructorSlot.getInt(reflectionConstructor);
     final long metaspaceMethod = runtime.getCompilerToVM().getMetaspaceMethod(holder, slot);
     return HotSpotResolvedJavaMethod.fromMetaspace(metaspaceMethod);
   } catch (IllegalArgumentException | IllegalAccessException e) {
     throw new GraalInternalError(e);
   }
 }
  public ResolvedJavaField lookupJavaField(Field reflectionField) {
    String name = reflectionField.getName();
    Class<?> fieldHolder = reflectionField.getDeclaringClass();
    Class<?> fieldType = reflectionField.getType();
    // java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits
    // are not used (yet).
    final int modifiers = reflectionField.getModifiers();
    final long offset =
        Modifier.isStatic(modifiers)
            ? unsafe.staticFieldOffset(reflectionField)
            : unsafe.objectFieldOffset(reflectionField);

    ResolvedJavaType holder = HotSpotResolvedObjectType.fromClass(fieldHolder);
    ResolvedJavaType type = HotSpotResolvedObjectType.fromClass(fieldType);

    if (offset != -1) {
      HotSpotResolvedObjectType resolved = (HotSpotResolvedObjectType) holder;
      return resolved.createField(name, type, offset, modifiers);
    } else {
      throw GraalInternalError.shouldNotReachHere("unresolved field " + reflectionField);
    }
  }
Exemple #4
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  public TypeUniverse() {
    Providers providers =
        Graal.getRequiredCapability(RuntimeProvider.class).getHostBackend().getProviders();
    metaAccess = providers.getMetaAccess();
    constantReflection = providers.getConstantReflection();
    snippetReflection = Graal.getRequiredCapability(SnippetReflectionProvider.class);
    Unsafe theUnsafe = null;
    try {
      theUnsafe = Unsafe.getUnsafe();
    } catch (Exception e) {
      try {
        Field theUnsafeField = Unsafe.class.getDeclaredField("theUnsafe");
        theUnsafeField.setAccessible(true);
        theUnsafe = (Unsafe) theUnsafeField.get(null);
      } catch (Exception e1) {
        throw (InternalError) new InternalError("unable to initialize unsafe").initCause(e1);
      }
    }
    unsafe = theUnsafe;

    Class<?>[] initialClasses = {
      void.class,
      boolean.class,
      byte.class,
      short.class,
      char.class,
      int.class,
      float.class,
      long.class,
      double.class,
      Object.class,
      Class.class,
      ClassLoader.class,
      String.class,
      Serializable.class,
      Cloneable.class,
      Test.class,
      TestMetaAccessProvider.class,
      List.class,
      Collection.class,
      Map.class,
      Queue.class,
      HashMap.class,
      LinkedHashMap.class,
      IdentityHashMap.class,
      AbstractCollection.class,
      AbstractList.class,
      ArrayList.class
    };
    for (Class<?> c : initialClasses) {
      addClass(c);
    }
    for (Field f : Constant.class.getDeclaredFields()) {
      int mods = f.getModifiers();
      if (f.getType() == Constant.class
          && Modifier.isPublic(mods)
          && Modifier.isStatic(mods)
          && Modifier.isFinal(mods)) {
        try {
          Constant c = (Constant) f.get(null);
          if (c != null) {
            constants.add(c);
          }
        } catch (Exception e) {
        }
      }
    }
    for (Class<?> c : classes) {
      if (c != void.class && !c.isArray()) {
        constants.add(snippetReflection.forObject(Array.newInstance(c, 42)));
      }
    }
    constants.add(snippetReflection.forObject(new ArrayList<>()));
    constants.add(snippetReflection.forObject(new IdentityHashMap<>()));
    constants.add(snippetReflection.forObject(new LinkedHashMap<>()));
    constants.add(snippetReflection.forObject(new TreeMap<>()));
    constants.add(snippetReflection.forObject(new ArrayDeque<>()));
    constants.add(snippetReflection.forObject(new LinkedList<>()));
    constants.add(snippetReflection.forObject("a string"));
    constants.add(snippetReflection.forObject(42));
    constants.add(snippetReflection.forObject(String.class));
    constants.add(snippetReflection.forObject(String[].class));
  }