feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/sun/instrument/InstrumentationImpl.java

@@ -0,0 +1,435 @@
+/*
+ * Copyright (c) 2003, 2013, 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 sun.instrument;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.AccessibleObject;
+
+import java.lang.instrument.ClassFileTransformer;
+import java.lang.instrument.ClassDefinition;
+import java.lang.instrument.Instrumentation;
+
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.security.ProtectionDomain;
+
+import java.util.jar.JarFile;
+
+/*
+ * Copyright 2003 Wily Technology, Inc.
+ */
+
+/**
+ * The Java side of the JPLIS implementation. Works in concert with a native JVMTI agent
+ * to implement the JPLIS API set. Provides both the Java API implementation of
+ * the Instrumentation interface and utility Java routines to support the native code.
+ * Keeps a pointer to the native data structure in a scalar field to allow native
+ * processing behind native methods.
+ */
+public class InstrumentationImpl implements Instrumentation {
+    private final     TransformerManager      mTransformerManager;
+    private           TransformerManager      mRetransfomableTransformerManager;
+    // needs to store a native pointer, so use 64 bits
+    private final     long                    mNativeAgent;
+    private final     boolean                 mEnvironmentSupportsRedefineClasses;
+    private volatile  boolean                 mEnvironmentSupportsRetransformClassesKnown;
+    private volatile  boolean                 mEnvironmentSupportsRetransformClasses;
+    private final     boolean                 mEnvironmentSupportsNativeMethodPrefix;
+
+    private
+    InstrumentationImpl(long    nativeAgent,
+                        boolean environmentSupportsRedefineClasses,
+                        boolean environmentSupportsNativeMethodPrefix) {
+        mTransformerManager                    = new TransformerManager(false);
+        mRetransfomableTransformerManager      = null;
+        mNativeAgent                           = nativeAgent;
+        mEnvironmentSupportsRedefineClasses    = environmentSupportsRedefineClasses;
+        mEnvironmentSupportsRetransformClassesKnown = false; // false = need to ask
+        mEnvironmentSupportsRetransformClasses = false;      // don't know yet
+        mEnvironmentSupportsNativeMethodPrefix = environmentSupportsNativeMethodPrefix;
+    }
+
+    public void
+    addTransformer(ClassFileTransformer transformer) {
+        addTransformer(transformer, false);
+    }
+
+    public synchronized void
+    addTransformer(ClassFileTransformer transformer, boolean canRetransform) {
+        if (transformer == null) {
+            throw new NullPointerException("null passed as 'transformer' in addTransformer");
+        }
+        if (canRetransform) {
+            if (!isRetransformClassesSupported()) {
+                throw new UnsupportedOperationException(
+                  "adding retransformable transformers is not supported in this environment");
+            }
+            if (mRetransfomableTransformerManager == null) {
+                mRetransfomableTransformerManager = new TransformerManager(true);
+            }
+            mRetransfomableTransformerManager.addTransformer(transformer);
+            if (mRetransfomableTransformerManager.getTransformerCount() == 1) {
+                setHasRetransformableTransformers(mNativeAgent, true);
+            }
+        } else {
+            mTransformerManager.addTransformer(transformer);
+        }
+    }
+
+    public synchronized boolean
+    removeTransformer(ClassFileTransformer transformer) {
+        if (transformer == null) {
+            throw new NullPointerException("null passed as 'transformer' in removeTransformer");
+        }
+        TransformerManager mgr = findTransformerManager(transformer);
+        if (mgr != null) {
+            mgr.removeTransformer(transformer);
+            if (mgr.isRetransformable() && mgr.getTransformerCount() == 0) {
+                setHasRetransformableTransformers(mNativeAgent, false);
+            }
+            return true;
+        }
+        return false;
+    }
+
+    public boolean
+    isModifiableClass(Class<?> theClass) {
+        if (theClass == null) {
+            throw new NullPointerException(
+                         "null passed as 'theClass' in isModifiableClass");
+        }
+        return isModifiableClass0(mNativeAgent, theClass);
+    }
+
+    public boolean
+    isRetransformClassesSupported() {
+        // ask lazily since there is some overhead
+        if (!mEnvironmentSupportsRetransformClassesKnown) {
+            mEnvironmentSupportsRetransformClasses = isRetransformClassesSupported0(mNativeAgent);
+            mEnvironmentSupportsRetransformClassesKnown = true;
+        }
+        return mEnvironmentSupportsRetransformClasses;
+    }
+
+    public void
+    retransformClasses(Class<?>... classes) {
+        if (!isRetransformClassesSupported()) {
+            throw new UnsupportedOperationException(
+              "retransformClasses is not supported in this environment");
+        }
+        retransformClasses0(mNativeAgent, classes);
+    }
+
+    public boolean
+    isRedefineClassesSupported() {
+        return mEnvironmentSupportsRedefineClasses;
+    }
+
+    public void
+    redefineClasses(ClassDefinition...  definitions)
+            throws  ClassNotFoundException {
+        if (!isRedefineClassesSupported()) {
+            throw new UnsupportedOperationException("redefineClasses is not supported in this environment");
+        }
+        if (definitions == null) {
+            throw new NullPointerException("null passed as 'definitions' in redefineClasses");
+        }
+        for (int i = 0; i < definitions.length; ++i) {
+            if (definitions[i] == null) {
+                throw new NullPointerException("element of 'definitions' is null in redefineClasses");
+            }
+        }
+        if (definitions.length == 0) {
+            return; // short-circuit if there are no changes requested
+        }
+
+        redefineClasses0(mNativeAgent, definitions);
+    }
+
+    @SuppressWarnings("rawtypes")
+    public Class[]
+    getAllLoadedClasses() {
+        return getAllLoadedClasses0(mNativeAgent);
+    }
+
+    @SuppressWarnings("rawtypes")
+    public Class[]
+    getInitiatedClasses(ClassLoader loader) {
+        return getInitiatedClasses0(mNativeAgent, loader);
+    }
+
+    public long
+    getObjectSize(Object objectToSize) {
+        if (objectToSize == null) {
+            throw new NullPointerException("null passed as 'objectToSize' in getObjectSize");
+        }
+        return getObjectSize0(mNativeAgent, objectToSize);
+    }
+
+    public void
+    appendToBootstrapClassLoaderSearch(JarFile jarfile) {
+        appendToClassLoaderSearch0(mNativeAgent, jarfile.getName(), true);
+    }
+
+    public void
+    appendToSystemClassLoaderSearch(JarFile jarfile) {
+        appendToClassLoaderSearch0(mNativeAgent, jarfile.getName(), false);
+    }
+
+    public boolean
+    isNativeMethodPrefixSupported() {
+        return mEnvironmentSupportsNativeMethodPrefix;
+    }
+
+    public synchronized void
+    setNativeMethodPrefix(ClassFileTransformer transformer, String prefix) {
+        if (!isNativeMethodPrefixSupported()) {
+            throw new UnsupportedOperationException(
+                   "setNativeMethodPrefix is not supported in this environment");
+        }
+        if (transformer == null) {
+            throw new NullPointerException(
+                       "null passed as 'transformer' in setNativeMethodPrefix");
+        }
+        TransformerManager mgr = findTransformerManager(transformer);
+        if (mgr == null) {
+            throw new IllegalArgumentException(
+                       "transformer not registered in setNativeMethodPrefix");
+        }
+        mgr.setNativeMethodPrefix(transformer, prefix);
+        String[] prefixes = mgr.getNativeMethodPrefixes();
+        setNativeMethodPrefixes(mNativeAgent, prefixes, mgr.isRetransformable());
+    }
+
+    private TransformerManager
+    findTransformerManager(ClassFileTransformer transformer) {
+        if (mTransformerManager.includesTransformer(transformer)) {
+            return mTransformerManager;
+        }
+        if (mRetransfomableTransformerManager != null &&
+                mRetransfomableTransformerManager.includesTransformer(transformer)) {
+            return mRetransfomableTransformerManager;
+        }
+        return null;
+    }
+
+
+    /*
+     *  Natives
+     */
+    private native boolean
+    isModifiableClass0(long nativeAgent, Class<?> theClass);
+
+    private native boolean
+    isRetransformClassesSupported0(long nativeAgent);
+
+    private native void
+    setHasRetransformableTransformers(long nativeAgent, boolean has);
+
+    private native void
+    retransformClasses0(long nativeAgent, Class<?>[] classes);
+
+    private native void
+    redefineClasses0(long nativeAgent, ClassDefinition[]  definitions)
+        throws  ClassNotFoundException;
+
+    @SuppressWarnings("rawtypes")
+    private native Class[]
+    getAllLoadedClasses0(long nativeAgent);
+
+    @SuppressWarnings("rawtypes")
+    private native Class[]
+    getInitiatedClasses0(long nativeAgent, ClassLoader loader);
+
+    private native long
+    getObjectSize0(long nativeAgent, Object objectToSize);
+
+    private native void
+    appendToClassLoaderSearch0(long nativeAgent, String jarfile, boolean bootLoader);
+
+    private native void
+    setNativeMethodPrefixes(long nativeAgent, String[] prefixes, boolean isRetransformable);
+
+    static {
+        System.loadLibrary("instrument");
+    }
+
+    /*
+     *  Internals
+     */
+
+
+    // Enable or disable Java programming language access checks on a
+    // reflected object (for example, a method)
+    private static void setAccessible(final AccessibleObject ao, final boolean accessible) {
+        AccessController.doPrivileged(new PrivilegedAction<Object>() {
+                public Object run() {
+                    ao.setAccessible(accessible);
+                    return null;
+                }});
+    }
+
+    // Attempt to load and start an agent
+    private void
+    loadClassAndStartAgent( String  classname,
+                            String  methodname,
+                            String  optionsString)
+            throws Throwable {
+
+        ClassLoader mainAppLoader   = ClassLoader.getSystemClassLoader();
+        Class<?>    javaAgentClass  = mainAppLoader.loadClass(classname);
+
+        Method m = null;
+        NoSuchMethodException firstExc = null;
+        boolean twoArgAgent = false;
+
+        // The agent class must have a premain or agentmain method that
+        // has 1 or 2 arguments. We check in the following order:
+        //
+        // 1) declared with a signature of (String, Instrumentation)
+        // 2) declared with a signature of (String)
+        // 3) inherited with a signature of (String, Instrumentation)
+        // 4) inherited with a signature of (String)
+        //
+        // So the declared version of either 1-arg or 2-arg always takes
+        // primary precedence over an inherited version. After that, the
+        // 2-arg version takes precedence over the 1-arg version.
+        //
+        // If no method is found then we throw the NoSuchMethodException
+        // from the first attempt so that the exception text indicates
+        // the lookup failed for the 2-arg method (same as JDK5.0).
+
+        try {
+            m = javaAgentClass.getDeclaredMethod( methodname,
+                                 new Class<?>[] {
+                                     String.class,
+                                     java.lang.instrument.Instrumentation.class
+                                 }
+                               );
+            twoArgAgent = true;
+        } catch (NoSuchMethodException x) {
+            // remember the NoSuchMethodException
+            firstExc = x;
+        }
+
+        if (m == null) {
+            // now try the declared 1-arg method
+            try {
+                m = javaAgentClass.getDeclaredMethod(methodname,
+                                                 new Class<?>[] { String.class });
+            } catch (NoSuchMethodException x) {
+                // ignore this exception because we'll try
+                // two arg inheritance next
+            }
+        }
+
+        if (m == null) {
+            // now try the inherited 2-arg method
+            try {
+                m = javaAgentClass.getMethod( methodname,
+                                 new Class<?>[] {
+                                     String.class,
+                                     java.lang.instrument.Instrumentation.class
+                                 }
+                               );
+                twoArgAgent = true;
+            } catch (NoSuchMethodException x) {
+                // ignore this exception because we'll try
+                // one arg inheritance next
+            }
+        }
+
+        if (m == null) {
+            // finally try the inherited 1-arg method
+            try {
+                m = javaAgentClass.getMethod(methodname,
+                                             new Class<?>[] { String.class });
+            } catch (NoSuchMethodException x) {
+                // none of the methods exists so we throw the
+                // first NoSuchMethodException as per 5.0
+                throw firstExc;
+            }
+        }
+
+        // the premain method should not be required to be public,
+        // make it accessible so we can call it
+        // Note: The spec says the following:
+        //     The agent class must implement a public static premain method...
+        setAccessible(m, true);
+
+        // invoke the 1 or 2-arg method
+        if (twoArgAgent) {
+            m.invoke(null, new Object[] { optionsString, this });
+        } else {
+            m.invoke(null, new Object[] { optionsString });
+        }
+
+        // don't let others access a non-public premain method
+        setAccessible(m, false);
+    }
+
+    // WARNING: the native code knows the name & signature of this method
+    private void
+    loadClassAndCallPremain(    String  classname,
+                                String  optionsString)
+            throws Throwable {
+
+        loadClassAndStartAgent( classname, "premain", optionsString );
+    }
+
+
+    // WARNING: the native code knows the name & signature of this method
+    private void
+    loadClassAndCallAgentmain(  String  classname,
+                                String  optionsString)
+            throws Throwable {
+
+        loadClassAndStartAgent( classname, "agentmain", optionsString );
+    }
+
+    // WARNING: the native code knows the name & signature of this method
+    private byte[]
+    transform(  ClassLoader         loader,
+                String              classname,
+                Class<?>            classBeingRedefined,
+                ProtectionDomain    protectionDomain,
+                byte[]              classfileBuffer,
+                boolean             isRetransformer) {
+        TransformerManager mgr = isRetransformer?
+                                        mRetransfomableTransformerManager :
+                                        mTransformerManager;
+        if (mgr == null) {
+            return null; // no manager, no transform
+        } else {
+            return mgr.transform(   loader,
+                                    classname,
+                                    classBeingRedefined,
+                                    protectionDomain,
+                                    classfileBuffer);
+        }
+    }
+}

jdkSrc/jdk8/sun/instrument/TransformerManager.java

@@ -0,0 +1,253 @@
+/*
+ * Copyright (c) 2003, 2011, 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 sun.instrument;
+
+
+import java.lang.instrument.Instrumentation;
+import java.lang.instrument.ClassFileTransformer;
+import java.security.ProtectionDomain;
+
+/*
+ * Copyright 2003 Wily Technology, Inc.
+ */
+
+/**
+ * Support class for the InstrumentationImpl. Manages the list of registered transformers.
+ * Keeps everything in the right order, deals with sync of the list,
+ * and actually does the calling of the transformers.
+ */
+public class TransformerManager
+{
+    private class TransformerInfo {
+        final ClassFileTransformer  mTransformer;
+        String                      mPrefix;
+
+        TransformerInfo(ClassFileTransformer transformer) {
+            mTransformer = transformer;
+            mPrefix = null;
+        }
+
+        ClassFileTransformer transformer() {
+            return  mTransformer;
+        }
+
+        String getPrefix() {
+            return mPrefix;
+        }
+
+        void setPrefix(String prefix) {
+            mPrefix = prefix;
+        }
+    }
+
+    /**
+     * a given instance of this list is treated as immutable to simplify sync;
+     * we pay copying overhead whenever the list is changed rather than every time
+     * the list is referenced.
+     * The array is kept in the order the transformers are added via addTransformer
+     * (first added is 0, last added is length-1)
+     * Use an array, not a List or other Collection. This keeps the set of classes
+     * used by this code to a minimum. We want as few dependencies as possible in this
+     * code, since it is used inside the class definition system. Any class referenced here
+     * cannot be transformed by Java code.
+     */
+    private TransformerInfo[]  mTransformerList;
+
+    /***
+     * Is this TransformerManager for transformers capable of retransformation?
+     */
+    private boolean            mIsRetransformable;
+
+    TransformerManager(boolean isRetransformable) {
+        mTransformerList    = new TransformerInfo[0];
+        mIsRetransformable  = isRetransformable;
+    }
+
+    boolean isRetransformable() {
+        return mIsRetransformable;
+    }
+
+    public synchronized void
+    addTransformer( ClassFileTransformer    transformer) {
+        TransformerInfo[] oldList = mTransformerList;
+        TransformerInfo[] newList = new TransformerInfo[oldList.length + 1];
+        System.arraycopy(   oldList,
+                            0,
+                            newList,
+                            0,
+                            oldList.length);
+        newList[oldList.length] = new TransformerInfo(transformer);
+        mTransformerList = newList;
+    }
+
+    public synchronized boolean
+    removeTransformer(ClassFileTransformer  transformer) {
+        boolean                 found           = false;
+        TransformerInfo[]       oldList         = mTransformerList;
+        int                     oldLength       = oldList.length;
+        int                     newLength       = oldLength - 1;
+
+        // look for it in the list, starting at the last added, and remember
+        // where it was if we found it
+        int matchingIndex   = 0;
+        for ( int x = oldLength - 1; x >= 0; x-- ) {
+            if ( oldList[x].transformer() == transformer ) {
+                found           = true;
+                matchingIndex   = x;
+                break;
+            }
+        }
+
+        // make a copy of the array without the matching element
+        if ( found ) {
+            TransformerInfo[]  newList = new TransformerInfo[newLength];
+
+            // copy up to but not including the match
+            if ( matchingIndex > 0 ) {
+                System.arraycopy(   oldList,
+                                    0,
+                                    newList,
+                                    0,
+                                    matchingIndex);
+            }
+
+            // if there is anything after the match, copy it as well
+            if ( matchingIndex < (newLength) ) {
+                System.arraycopy(   oldList,
+                                    matchingIndex + 1,
+                                    newList,
+                                    matchingIndex,
+                                    (newLength) - matchingIndex);
+            }
+            mTransformerList = newList;
+        }
+        return found;
+    }
+
+    synchronized boolean
+    includesTransformer(ClassFileTransformer transformer) {
+        for (TransformerInfo info : mTransformerList) {
+            if ( info.transformer() == transformer ) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    // This function doesn't actually snapshot anything, but should be
+    // used to set a local variable, which will snapshot the transformer
+    // list because of the copying semantics of mTransformerList (see
+    // the comment for mTransformerList).
+    private TransformerInfo[]
+    getSnapshotTransformerList() {
+        return mTransformerList;
+    }
+
+    public byte[]
+    transform(  ClassLoader         loader,
+                String              classname,
+                Class<?>            classBeingRedefined,
+                ProtectionDomain    protectionDomain,
+                byte[]              classfileBuffer) {
+        boolean someoneTouchedTheBytecode = false;
+
+        TransformerInfo[]  transformerList = getSnapshotTransformerList();
+
+        byte[]  bufferToUse = classfileBuffer;
+
+        // order matters, gotta run 'em in the order they were added
+        for ( int x = 0; x < transformerList.length; x++ ) {
+            TransformerInfo         transformerInfo = transformerList[x];
+            ClassFileTransformer    transformer = transformerInfo.transformer();
+            byte[]                  transformedBytes = null;
+
+            try {
+                transformedBytes = transformer.transform(   loader,
+                                                            classname,
+                                                            classBeingRedefined,
+                                                            protectionDomain,
+                                                            bufferToUse);
+            }
+            catch (Throwable t) {
+                // don't let any one transformer mess it up for the others.
+                // This is where we need to put some logging. What should go here? FIXME
+            }
+
+            if ( transformedBytes != null ) {
+                someoneTouchedTheBytecode = true;
+                bufferToUse = transformedBytes;
+            }
+        }
+
+        // if someone modified it, return the modified buffer.
+        // otherwise return null to mean "no transforms occurred"
+        byte [] result;
+        if ( someoneTouchedTheBytecode ) {
+            result = bufferToUse;
+        }
+        else {
+            result = null;
+        }
+
+        return result;
+    }
+
+
+    int
+    getTransformerCount() {
+        TransformerInfo[]  transformerList = getSnapshotTransformerList();
+        return transformerList.length;
+    }
+
+    boolean
+    setNativeMethodPrefix(ClassFileTransformer transformer, String prefix) {
+        TransformerInfo[]  transformerList = getSnapshotTransformerList();
+
+        for ( int x = 0; x < transformerList.length; x++ ) {
+            TransformerInfo         transformerInfo = transformerList[x];
+            ClassFileTransformer    aTransformer = transformerInfo.transformer();
+
+            if ( aTransformer == transformer ) {
+                transformerInfo.setPrefix(prefix);
+                return true;
+            }
+        }
+        return false;
+    }
+
+
+    String[]
+    getNativeMethodPrefixes() {
+        TransformerInfo[]  transformerList = getSnapshotTransformerList();
+        String[] prefixes                  = new String[transformerList.length];
+
+        for ( int x = 0; x < transformerList.length; x++ ) {
+            TransformerInfo         transformerInfo = transformerList[x];
+            prefixes[x] = transformerInfo.getPrefix();
+        }
+        return prefixes;
+    }
+}