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[GR-7033] Support for initialized ClassValue values.
PullRequest: graal/1196
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substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/ClassValueFeature.java
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| @@ -0,0 +1,103 @@ | ||
| /* | ||
| * Copyright (c) 2015, 2017, 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. | ||
| * | ||
| * 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.hosted; | ||
|
|
||
| import com.oracle.graal.pointsto.meta.AnalysisType; | ||
| import com.oracle.svm.core.annotate.AutomaticFeature; | ||
| import com.oracle.svm.core.jdk.JavaLangSubstitutions.ClassValueSupport; | ||
| import com.oracle.svm.core.util.VMError; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import org.graalvm.nativeimage.Feature; | ||
| import org.graalvm.nativeimage.ImageSingletons; | ||
|
|
||
| @AutomaticFeature | ||
| public final class ClassValueFeature implements Feature { | ||
| private final Map<ClassValue<?>, Map<Class<?>, Object>> values = new ConcurrentHashMap<>(); | ||
|
|
||
| @Override | ||
| public void afterRegistration(AfterRegistrationAccess access) { | ||
| ClassValueSupport support = new ClassValueSupport(values); | ||
| ImageSingletons.add(ClassValueSupport.class, support); | ||
| } | ||
|
|
||
| @Override | ||
| public void duringSetup(DuringSetupAccess access) { | ||
| access.registerObjectReplacer(this::processObject); | ||
| } | ||
|
|
||
| private Object processObject(Object obj) { | ||
| if (obj instanceof ClassValue) { | ||
| values.putIfAbsent((ClassValue<?>) obj, new ConcurrentHashMap<>()); | ||
| } | ||
| return obj; | ||
| } | ||
|
|
||
| @Override | ||
| public void duringAnalysis(DuringAnalysisAccess access) { | ||
| FeatureImpl.DuringAnalysisAccessImpl impl = (FeatureImpl.DuringAnalysisAccessImpl) access; | ||
| List<AnalysisType> types = impl.getUniverse().getTypes(); | ||
| for (AnalysisType t : types) { | ||
| if (!t.isInstantiated() && !t.isInTypeCheck()) { | ||
| continue; | ||
| } | ||
| Class<?> clazz = t.getJavaClass(); | ||
| for (Map.Entry<ClassValue<?>, Map<Class<?>, Object>> e : values.entrySet()) { | ||
| ClassValue<?> v = e.getKey(); | ||
| Map<Class<?>, Object> m = e.getValue(); | ||
| if (!m.containsKey(clazz) && hasValue(v, clazz)) { | ||
| m.put(clazz, v.get(clazz)); | ||
| access.requireAnalysisIteration(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private static final java.lang.reflect.Field IDENTITY; | ||
| private static final java.lang.reflect.Field CLASS_VALUE_MAP; | ||
| static { | ||
| try { | ||
| IDENTITY = ClassValue.class.getDeclaredField("identity"); | ||
| IDENTITY.setAccessible(true); | ||
| CLASS_VALUE_MAP = Class.class.getDeclaredField("classValueMap"); | ||
| CLASS_VALUE_MAP.setAccessible(true); | ||
| } catch (NoSuchFieldException ex) { | ||
| throw VMError.shouldNotReachHere(ex); | ||
| } | ||
| } | ||
|
|
||
| private static boolean hasValue(ClassValue<?> v, Class<?> c) { | ||
| try { | ||
| Map<?, ?> map = (Map<?, ?>) CLASS_VALUE_MAP.get(c); | ||
| final Object id = IDENTITY.get(v); | ||
| final boolean res = map.containsKey(id); | ||
| return res; | ||
| } catch (RuntimeException ex) { | ||
| throw ex; | ||
| } catch (Exception ex) { | ||
| throw new IllegalStateException(ex); | ||
| } | ||
| } | ||
|
|
||
| } |