[GR-34703] Sealed classes support

compiler/src/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/NumUtil.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 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
@@ -105,6 +105,11 @@ public static boolean is32bit(long x) {
         return -0x80000000L <= x && x < 0x80000000L;
     }
 
+    public static byte safeToUByte(int v) {
+        assert isUByte(v);
+        return (byte) v;
+    }
+
     public static byte safeToByte(int v) {
         assert isByte(v);
         return (byte) v;

substratevm/src/com.oracle.svm.agent/src/com/oracle/svm/agent/BreakpointInterceptor.java

@@ -255,6 +255,10 @@ private static boolean getDeclaredClasses(JNIEnvironment jni, Breakpoint bp, Int
         return handleGetClasses(jni, bp, state);
     }
 
+    private static boolean getPermittedSubclasses(JNIEnvironment jni, Breakpoint bp, InterceptedState state) {
+        return handleGetClasses(jni, bp, state);
+    }
+
     private static boolean handleGetClasses(JNIEnvironment jni, Breakpoint bp, InterceptedState state) {
         JNIObjectHandle callerClass = state.getDirectCallerClass();
         JNIObjectHandle self = getObjectArgument(0);
@@ -1520,7 +1524,9 @@ private interface BreakpointHandler {
                                     BreakpointInterceptor::constantBootstrapGetStaticFinal),
                     optionalBrk("java/lang/invoke/MethodType", "fromMethodDescriptorString",
                                     "(Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/lang/invoke/MethodType;",
-                                    BreakpointInterceptor::methodTypeFromDescriptor)
+                                    BreakpointInterceptor::methodTypeFromDescriptor),
+                    optionalBrk("java/lang/Class", "getPermittedSubclasses", "()[Ljava/lang/Class;",
+                                    BreakpointInterceptor::getPermittedSubclasses)
     };
 
     private static final BreakpointSpecification CLASSLOADER_LOAD_CLASS_BREAKPOINT_SPECIFICATION = optionalBrk("java/lang/ClassLoader", "loadClass",

substratevm/src/com.oracle.svm.configure/src/com/oracle/svm/configure/config/ConfigurationType.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 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
@@ -74,6 +74,7 @@ static ConfigurationType copyAndSubtract(ConfigurationType type, ConfigurationTy
     private Map<ConfigurationMethod, ConfigurationMemberInfo> methods;
 
     private boolean allDeclaredClasses;
+    private boolean allPermittedSubclasses;
     private boolean allPublicClasses;
     private boolean allDeclaredFields;
     private boolean allPublicFields;
@@ -211,6 +212,7 @@ private void removeMethods(ConfigurationType other) {
     private void setFlagsFromOther(ConfigurationType other, BiPredicate<Boolean, Boolean> flagPredicate,
                     BiFunction<ConfigurationMemberAccessibility, ConfigurationMemberAccessibility, ConfigurationMemberAccessibility> accessCombiner) {
         allDeclaredClasses = flagPredicate.test(allDeclaredClasses, other.allDeclaredClasses);
+        allPermittedSubclasses = flagPredicate.test(allPermittedSubclasses, other.allPermittedSubclasses);
         allPublicClasses = flagPredicate.test(allPublicClasses, other.allPublicClasses);
         allDeclaredFields = flagPredicate.test(allDeclaredFields, other.allDeclaredFields);
         allPublicFields = flagPredicate.test(allPublicFields, other.allPublicFields);
@@ -225,7 +227,7 @@ private boolean isEmpty() {
     }
 
     private boolean allFlagsFalse() {
-        return !(allDeclaredClasses || allPublicClasses || allDeclaredFields || allPublicFields ||
+        return !(allDeclaredClasses || allPermittedSubclasses || allPublicClasses || allDeclaredFields || allPublicFields ||
                         allDeclaredMethodsAccess != ConfigurationMemberAccessibility.NONE || allPublicMethodsAccess != ConfigurationMemberAccessibility.NONE ||
                         allDeclaredConstructorsAccess != ConfigurationMemberAccessibility.NONE || allPublicConstructorsAccess != ConfigurationMemberAccessibility.NONE);
     }
@@ -310,6 +312,10 @@ public synchronized void setAllDeclaredClasses() {
         allDeclaredClasses = true;
     }
 
+    public synchronized void setAllPermittedSubclasses() {
+        allPermittedSubclasses = true;
+    }
+
     public synchronized void setAllPublicClasses() {
         allPublicClasses = true;
     }
@@ -365,6 +371,7 @@ public synchronized void printJson(JsonWriter writer) throws IOException {
         optionallyPrintJsonBoolean(writer, allDeclaredConstructorsAccess == ConfigurationMemberAccessibility.ACCESSED, "allDeclaredConstructors");
         optionallyPrintJsonBoolean(writer, allPublicConstructorsAccess == ConfigurationMemberAccessibility.ACCESSED, "allPublicConstructors");
         optionallyPrintJsonBoolean(writer, allDeclaredClasses, "allDeclaredClasses");
+        optionallyPrintJsonBoolean(writer, allPermittedSubclasses, "allPermittedSubclasses");
         optionallyPrintJsonBoolean(writer, allPublicClasses, "allPublicClasses");
         optionallyPrintJsonBoolean(writer, allDeclaredMethodsAccess == ConfigurationMemberAccessibility.QUERIED, "queryAllDeclaredMethods");
         optionallyPrintJsonBoolean(writer, allPublicMethodsAccess == ConfigurationMemberAccessibility.QUERIED, "queryAllPublicMethods");
@@ -393,7 +400,7 @@ public synchronized void printJson(JsonWriter writer) throws IOException {
             }
         }
 
-        writer.append('}').unindent().newline();
+        writer.unindent().newline().append('}');
     }
 
     private Set<ConfigurationMethod> getMethodsByAccessibility(ConfigurationMemberAccessibility accessibility) {
@@ -463,6 +470,10 @@ public static boolean haveAllDeclaredClasses(ConfigurationType type) {
             return type.allDeclaredClasses;
         }
 
+        public static boolean haveAllPermittedSubclasses(ConfigurationType type) {
+            return type.allPermittedSubclasses;
+        }
+
         public static boolean haveAllPublicClasses(ConfigurationType type) {
             return type.allPublicClasses;
         }

substratevm/src/com.oracle.svm.configure/src/com/oracle/svm/configure/config/ParserConfigurationAdapter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 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
@@ -98,6 +98,11 @@ public void registerDeclaredClasses(ConfigurationType type) {
         type.setAllDeclaredClasses();
     }
 
+    @Override
+    public void registerPermittedSubclasses(ConfigurationType type) {
+        type.setAllPermittedSubclasses();
+    }
+
     @Override
     public void registerPublicFields(ConfigurationType type) {
         type.setAllPublicFields();

substratevm/src/com.oracle.svm.configure/src/com/oracle/svm/configure/trace/ReflectionProcessor.java

@@ -156,6 +156,10 @@ public void processEntry(Map<String, ?> entry) {
                 configuration.getOrCreateType(condition, clazz).setAllDeclaredClasses();
                 break;
             }
+            case "getPermittedSubclasses": {
+                configuration.getOrCreateType(condition, clazz).setAllPermittedSubclasses();
+                break;
+            }
             case "getClasses": {
                 configuration.getOrCreateType(condition, clazz).setAllPublicClasses();
                 break;

substratevm/src/com.oracle.svm.core.jdk17/src/com/oracle/svm/core/jdk17/SealedClassSupportJDK17OrLater.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2021, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+package com.oracle.svm.core.jdk17;
+
+// Checkstyle: allow reflection
+
+import com.oracle.svm.core.annotate.AutomaticFeature;
+import com.oracle.svm.core.jdk.SealedClassSupport;
+import org.graalvm.compiler.serviceprovider.JavaVersionUtil;
+import org.graalvm.nativeimage.ImageSingletons;
+import org.graalvm.nativeimage.hosted.Feature;
+
+final class SealedClassSupportJDK17OrLater extends SealedClassSupport {
+
+    @Override
+    public boolean isSealed(Class<?> clazz) {
+        return clazz.isSealed();
+    }
+
+    @Override
+    public Class<?>[] getPermittedSubclasses(Class<?> clazz) {
+        return clazz.getPermittedSubclasses();
+    }
+}
+
+@AutomaticFeature
+final class SealedClassFeatureJDK17OrLater implements Feature {
+
+    @Override
+    public boolean isInConfiguration(IsInConfigurationAccess access) {
+        return JavaVersionUtil.JAVA_SPEC >= 17;
+    }
+
+    @Override
+    public void afterRegistration(AfterRegistrationAccess access) {
+        ImageSingletons.add(SealedClassSupport.class, new SealedClassSupportJDK17OrLater());
+    }
+}

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/configure/ReflectionConfigurationParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2017, Oracle and/or its affiliates. All rights reserved.
+ * 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
@@ -52,7 +52,7 @@ public final class ReflectionConfigurationParser<T> extends ConfigurationParser
     private final boolean allowIncompleteClasspath;
     private static final List<String> OPTIONAL_REFLECT_CONFIG_OBJECT_ATTRS = Arrays.asList("allDeclaredConstructors", "allPublicConstructors",
                     "allDeclaredMethods", "allPublicMethods", "allDeclaredFields", "allPublicFields",
-                    "allDeclaredClasses", "allPublicClasses", "methods", "queriedMethods", "fields", CONDITIONAL_KEY,
+                    "allDeclaredClasses", "allPermittedSubclasses", "allPublicClasses", "methods", "queriedMethods", "fields", CONDITIONAL_KEY,
                     "queryAllDeclaredConstructors", "queryAllPublicConstructors", "queryAllDeclaredMethods", "queryAllPublicMethods");
 
     public ReflectionConfigurationParser(ReflectionConfigurationParserDelegate<T> delegate) {
@@ -139,6 +139,11 @@ private void parseClass(Map<String, Object> data) {
                             delegate.registerDeclaredClasses(clazz);
                         }
                         break;
+                    case "allPermittedSubclasses":
+                        if (asBoolean(value, "allPermittedSubclasses")) {
+                            delegate.registerPermittedSubclasses(clazz);
+                        }
+                        break;
                     case "allPublicClasses":
                         if (asBoolean(value, "allPublicClasses")) {
                             delegate.registerPublicClasses(clazz);

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/configure/ReflectionConfigurationParserDelegate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 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
@@ -42,6 +42,8 @@ public interface ReflectionConfigurationParserDelegate<T> {
 
     void registerDeclaredClasses(T type);
 
+    void registerPermittedSubclasses(T type);
+
     void registerPublicFields(T type);
 
     void registerDeclaredFields(T type);