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The following commit(s) were added to refs/heads/master by this push:
new 69c8d6331e Issue 4243: delete java/lang/Module and use dynamic proxy
to implement Instrumentation across JDK versions
new a1b803a832 Merge pull request #4273 from nbauma109/patch-4243
69c8d6331e is described below
commit 69c8d6331e99d72d0d4c299a06c176e021e3187a
Author: Nicolas Baumann <[email protected]>
AuthorDate: Wed Jun 22 22:33:00 2022 +0200
Issue 4243: delete java/lang/Module and use dynamic proxy to implement
Instrumentation across JDK versions
---
platform/o.n.bootstrap/src/java/lang/Module.java | 23 ----
.../src/org/netbeans/NbInstrumentation.java | 134 ++++++++-------------
2 files changed, 47 insertions(+), 110 deletions(-)
diff --git a/platform/o.n.bootstrap/src/java/lang/Module.java
b/platform/o.n.bootstrap/src/java/lang/Module.java
deleted file mode 100644
index 4b36b26142..0000000000
--- a/platform/o.n.bootstrap/src/java/lang/Module.java
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package java.lang;
-
-/** Dummy */
-public class Module {
-}
diff --git a/platform/o.n.bootstrap/src/org/netbeans/NbInstrumentation.java
b/platform/o.n.bootstrap/src/org/netbeans/NbInstrumentation.java
index 15b373136d..f4a95fc09d 100644
--- a/platform/o.n.bootstrap/src/org/netbeans/NbInstrumentation.java
+++ b/platform/o.n.bootstrap/src/org/netbeans/NbInstrumentation.java
@@ -26,6 +26,8 @@ import java.lang.instrument.Instrumentation;
import java.lang.instrument.UnmodifiableClassException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Proxy;
import java.security.ProtectionDomain;
import java.util.Collection;
import java.util.List;
@@ -41,14 +43,20 @@ import org.openide.util.WeakSet;
*
* @author Jaroslav Tulach <[email protected]>
*/
-final class NbInstrumentation implements Instrumentation {
+final class NbInstrumentation implements InvocationHandler {
private static final Logger LOG =
Logger.getLogger(NbInstrumentation.class.getName());
private static final Object LOCK = new Object();
private static volatile Collection<NbInstrumentation> ACTIVE;
- private final List<ClassFileTransformer> transformers = new
CopyOnWriteArrayList<ClassFileTransformer>();
- private static final ThreadLocal<Boolean> IN = new ThreadLocal<Boolean>();
-
+ private final List<ClassFileTransformer> transformers = new
CopyOnWriteArrayList<>();
+ private static final ThreadLocal<Boolean> IN = new ThreadLocal<>();
+
+ private final Instrumentation instrumentationProxy;
+
+ public NbInstrumentation() {
+ instrumentationProxy = (Instrumentation)
Proxy.newProxyInstance(getClass().getClassLoader(), new Class<?>[] {
Instrumentation.class }, this);
+ }
+
static NbInstrumentation registerAgent(ClassLoader l, String
agentClassName) {
try {
return registerImpl(agentClassName, l);
@@ -57,29 +65,31 @@ final class NbInstrumentation implements Instrumentation {
return null;
}
}
+
static void unregisterAgent(NbInstrumentation instr) {
synchronized (LOCK) {
if (ACTIVE != null) {
- Collection<NbInstrumentation> clone = new
WeakSet<NbInstrumentation>(ACTIVE);
+ Collection<NbInstrumentation> clone = new WeakSet<>(ACTIVE);
clone.remove(instr);
ACTIVE = clone;
}
}
}
+
private static NbInstrumentation registerImpl(String agentClassName,
ClassLoader l) throws ClassNotFoundException, IllegalArgumentException,
NoSuchMethodException, SecurityException, IllegalAccessException,
InvocationTargetException {
final NbInstrumentation inst = new NbInstrumentation();
synchronized (LOCK) {
if (ACTIVE == null) {
- ACTIVE = new WeakSet<NbInstrumentation>();
+ ACTIVE = new WeakSet<>();
} else {
- ACTIVE = new WeakSet<NbInstrumentation>(ACTIVE);
+ ACTIVE = new WeakSet<>(ACTIVE);
}
ACTIVE.add(inst);
}
Class<?> agentClass = Class.forName(agentClassName, true, l);
try {
Method m = agentClass.getMethod("agentmain", String.class,
Instrumentation.class); // NOI18N
- m.invoke(null, "", inst);
+ m.invoke(null, "", inst.getInstrumentationProxy());
} catch (NoSuchMethodException ex) {
Method m = agentClass.getMethod("agentmain", String.class); //
NOI18N
m.invoke(null, "");
@@ -112,86 +122,36 @@ final class NbInstrumentation implements Instrumentation {
//
@Override
- public void addTransformer(ClassFileTransformer transformer, boolean
canRetransform) {
- transformers.add(transformer);
- }
-
- @Override
- public void addTransformer(ClassFileTransformer transformer) {
- transformers.add(transformer);
- }
-
- @Override
- public boolean removeTransformer(ClassFileTransformer transformer) {
- return transformers.remove(transformer);
- }
-
- @Override
- public boolean isRetransformClassesSupported() {
- return false;
- }
-
- @Override
- public void retransformClasses(Class<?>... classes) throws
UnmodifiableClassException {
- throw new UnmodifiableClassException();
- }
-
- @Override
- public boolean isRedefineClassesSupported() {
- return false;
- }
-
- @Override
- public void redefineClasses(ClassDefinition... definitions) throws
ClassNotFoundException, UnmodifiableClassException {
- throw new UnmodifiableClassException();
- }
-
- @Override
- public boolean isModifiableClass(Class<?> theClass) {
- return false;
- }
-
- @SuppressWarnings("rawtypes")
- @Override
- public Class[] getAllLoadedClasses() {
- return new Class[0];
- }
-
- @SuppressWarnings("rawtypes")
- @Override
- public Class[] getInitiatedClasses(ClassLoader loader) {
- return new Class[0];
- }
-
- @Override
- public long getObjectSize(Object objectToSize) {
- return 42;
- }
-
- @Override
- public void appendToBootstrapClassLoaderSearch(JarFile jarfile) {
- }
-
- @Override
- public void appendToSystemClassLoaderSearch(JarFile jarfile) {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public boolean isNativeMethodPrefixSupported() {
- return false;
- }
-
- @Override
- public void setNativeMethodPrefix(ClassFileTransformer transformer, String
prefix) {
- throw new UnsupportedOperationException();
- }
-
- public void redefineModule(java.lang.Module module, Set<java.lang.Module>
extraReads, Map<String, Set<java.lang.Module>> extraExports, Map<String,
Set<java.lang.Module>> extraOpens, Set<Class<?>> extraUses, Map<Class<?>,
List<Class<?>>> extraProvides) {
- throw new UnsupportedOperationException();
+ public Object invoke(Object proxy, Method method, Object[] args) throws
Throwable {
+ switch (method.getName()) {
+ case "addTransformer":
+ return transformers.add((ClassFileTransformer) args[0]);
+ case "removeTransformer":
+ return transformers.remove(args[0]);
+ case "isRetransformClassesSupported":
+ case "isRedefineClassesSupported":
+ case "isModifiableClass":
+ case "isNativeMethodPrefixSupported":
+ case "isModifiableModule":
+ return false;
+ case "retransformClasses":
+ case "redefineClasses":
+ throw new UnmodifiableClassException();
+ case "getAllLoadedClasses":
+ case "getInitiatedClasses":
+ return new Class[0];
+ case "getObjectSize":
+ return 42;
+ case "appendToSystemClassLoaderSearch":
+ case "setNativeMethodPrefix":
+ case "redefineModule":
+ throw new UnsupportedOperationException();
+ default:
+ return null;
+ }
}
- public boolean isModifiableModule(java.lang.Module module) {
- return false;
+ public Instrumentation getInstrumentationProxy() {
+ return instrumentationProxy;
}
}
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