[GR-30957] Implement Module/ModuleLayer substitutions

.github/workflows/main.yml

@@ -80,6 +80,11 @@ jobs:
               JDK: "labsjdk-ce-11"
               GATE: "build,debuginfotest"
               PRIMARY: "substratevm"
+          - env:
+              JDK: "labsjdk-ce-11"
+              GATE: "hellomodule"
+              PRIMARY: "substratevm"
+              USE_NATIVE_IMAGE_JAVA_PLATFORM_MODULE_SYSTEM: true
           - env:
               JDK: "labsjdk-ce-11"
               GATE: "style,fullbuild"

substratevm/mx.substratevm/suite.py

@@ -198,7 +198,8 @@
             "dependencies": ["com.oracle.svm.core"],
             "requires" : [
                 "java.logging",
-                "jdk.unsupported"
+                "jdk.unsupported",
+                "java.compiler",
             ],
             "requiresConcealed" : {
                 "java.base" : [
@@ -235,7 +236,10 @@
         "com.oracle.svm.core.jdk15": {
             "subDir": "src",
             "sourceDirs": ["src"],
-            "dependencies": ["com.oracle.svm.core"],
+            "dependencies": [
+                "com.oracle.svm.core",
+                "com.oracle.svm.core.jdk11"
+            ],
             "requiresConcealed" : {
                 "java.base" : [
                     "jdk.internal.loader",
@@ -403,6 +407,7 @@
             "sourceDirs": ["src"],
             "dependencies": [
                 "com.oracle.svm.hosted",
+                "com.oracle.svm.core.jdk11"
             ],
             "requires" : ["java.instrument"],
             "requiresConcealed" : {

substratevm/src/com.oracle.svm.core.jdk11/src/com/oracle/svm/core/jdk11/BootModuleLayerSupport.java

@@ -0,0 +1,47 @@
+/*
+ * 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.jdk11;
+
+import org.graalvm.nativeimage.ImageSingletons;
+import org.graalvm.nativeimage.Platform;
+import org.graalvm.nativeimage.Platforms;
+
+public final class BootModuleLayerSupport {
+
+    public static BootModuleLayerSupport instance() {
+        return ImageSingletons.lookup(BootModuleLayerSupport.class);
+    }
+
+    private ModuleLayer bootLayer;
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public void setBootLayer(ModuleLayer bootLayer) {
+        this.bootLayer = bootLayer;
+    }
+
+    public ModuleLayer getBootLayer() {
+        return bootLayer;
+    }
+}

substratevm/src/com.oracle.svm.core.jdk11/src/com/oracle/svm/core/jdk11/JavaLangSubstitutions_JDK11OrLater.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2021, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2021, Red Hat Inc. 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.jdk11;
+
+import com.oracle.svm.core.SubstrateUtil;
+import com.oracle.svm.core.annotate.Alias;
+import com.oracle.svm.core.annotate.Delete;
+import com.oracle.svm.core.annotate.RecomputeFieldValue;
+import com.oracle.svm.core.annotate.Substitute;
+import com.oracle.svm.core.annotate.TargetClass;
+import com.oracle.svm.core.hub.ClassForNameSupport;
+import com.oracle.svm.core.jdk.JDK11OrLater;
+import com.oracle.svm.core.jdk.Target_java_lang_Package;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Stream;
+
+@TargetClass(value = jdk.internal.loader.ClassLoaders.class, onlyWith = JDK11OrLater.class)
+final class Target_jdk_internal_loader_ClassLoaders_JDK11OrLater {
+    @Alias
+    static native Target_jdk_internal_loader_BuiltinClassLoader bootLoader();
+
+    @Alias
+    public static native ClassLoader platformClassLoader();
+}
+
+@TargetClass(value = jdk.internal.loader.BootLoader.class, onlyWith = JDK11OrLater.class)
+final class Target_jdk_internal_loader_BootLoader_JDK11OrLater {
+
+    @Substitute
+    static Package getDefinedPackage(String name) {
+        if (name != null) {
+            Target_java_lang_Package pkg = new Target_java_lang_Package(name, null, null, null,
+                    null, null, null, null, null);
+            return SubstrateUtil.cast(pkg, Package.class);
+        } else {
+            return null;
+        }
+    }
+
+    @Substitute
+    public static Stream<Package> packages() {
+        Target_jdk_internal_loader_BuiltinClassLoader bootClassLoader = Target_jdk_internal_loader_ClassLoaders_JDK11OrLater.bootLoader();
+        Target_java_lang_ClassLoader_JDK11OrLater systemClassLoader = SubstrateUtil.cast(bootClassLoader, Target_java_lang_ClassLoader_JDK11OrLater.class);
+        return systemClassLoader.packages();
+    }
+
+    @Delete("only used by #packages()")
+    private static native String[] getSystemPackageNames();
+
+    @Substitute
+    private static Class<?> loadClassOrNull(String name) {
+        return ClassForNameSupport.forNameOrNull(name, null);
+    }
+
+    @SuppressWarnings("unused")
+    @Substitute
+    private static Class<?> loadClass(Target_java_lang_Module_JDK11OrLater module, String name) {
+        /* The module system is not supported for now, therefore the module parameter is ignored. */
+        return ClassForNameSupport.forNameOrNull(name, null);
+    }
+
+    @Substitute
+    private static boolean hasClassPath() {
+        return true;
+    }
+
+    /**
+     * All ClassLoaderValue are reset at run time for now. See also
+     * {@link Target_java_lang_ClassLoader_JDK11OrLater#classLoaderValueMap} for resetting of individual class
+     * loaders.
+     */
+    // Checkstyle: stop
+    @Alias @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.NewInstance, declClass = ConcurrentHashMap.class)//
+    static ConcurrentHashMap<?, ?> CLASS_LOADER_VALUE_MAP;
+    // Checkstyle: resume
+}
+
+/** Dummy class to have a class with the file's name. */
+public final class JavaLangSubstitutions_JDK11OrLater {
+
+}