Mercurial > hg > graal-jvmci-8
view c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/server/ReplacingStreams.java @ 2293:e3c42b8de67e
Removed a reference to getRiType(Class c) and some checkstyle fixes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 11 Apr 2011 17:42:45 +0200 |
parents | 8c426c2891c8 |
children | 160aacf936ad |
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/* * Copyright (c) 2011 Sun Microsystems, Inc. All rights reserved. * * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product * that is described in this document. In particular, and without limitation, these intellectual property * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or * more additional patents or pending patent applications in the U.S. and in other countries. * * U.S. Government Rights - Commercial software. Government users are subject to the Sun * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its * supplements. * * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the * U.S. and other countries. * * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open * Company, Ltd. */ package com.sun.hotspot.c1x.server; import java.io.*; import java.lang.reflect.*; import java.util.*; import com.sun.cri.ci.*; import com.sun.hotspot.c1x.*; import com.sun.hotspot.c1x.Compiler; public class ReplacingStreams { private IdentityHashMap<Object, Placeholder> objectMap = new IdentityHashMap<Object, Placeholder>(); private ArrayList<Object> objectList = new ArrayList<Object>(); private ReplacingOutputStream output; private ReplacingInputStream input; private InvocationSocket invocation; public ReplacingStreams(OutputStream outputStream, InputStream inputStream) throws IOException { output = new ReplacingOutputStream(new BufferedOutputStream(outputStream)); // required, because creating an ObjectOutputStream writes a header, but doesn't flush the stream output.flush(); input = new ReplacingInputStream(new BufferedInputStream(inputStream)); invocation = new InvocationSocket(output, input); addStaticObject(CiValue.IllegalValue); } public void setInvocationSocket(InvocationSocket invocation) { this.invocation = invocation; } public ReplacingOutputStream getOutput() { return output; } public ReplacingInputStream getInput() { return input; } public InvocationSocket getInvocation() { return invocation; } private void addStaticObject(Object obj) { int id = objectList.size(); objectList.add(obj); objectMap.put(obj, new Placeholder(id)); } public static class Placeholder implements Serializable { public final int id; public Placeholder(int id) { this.id = id; } @Override public String toString() { return "#<" + id + ">"; } } public static class NewRemoteCallPlaceholder implements Serializable { public final Class<?>[] interfaces; public NewRemoteCallPlaceholder(Class<?>[] interfaces) { this.interfaces = interfaces; } } public static class NewDummyPlaceholder implements Serializable { } /** * Replaces certain cir objects that cannot easily be made Serializable. */ public class ReplacingInputStream extends ObjectInputStream { private Compiler compiler; public ReplacingInputStream(InputStream in) throws IOException { super(in); enableResolveObject(true); } public void setCompiler(Compiler compiler) { this.compiler = compiler; } @Override protected Object resolveObject(Object obj) throws IOException { // see ReplacingInputStream.replaceObject for details on when these types of objects are created if (obj instanceof Placeholder) { Placeholder placeholder = (Placeholder) obj; obj = objectList.get(placeholder.id); return obj; } if (obj instanceof NewRemoteCallPlaceholder) { NewRemoteCallPlaceholder newPlaceholder = (NewRemoteCallPlaceholder) obj; Placeholder placeholder = new Placeholder(objectList.size()); obj = Proxy.newProxyInstance(getClass().getClassLoader(), newPlaceholder.interfaces, invocation.new Handler(placeholder)); objectMap.put(obj, placeholder); objectList.add(obj); return obj; } if (obj instanceof NewDummyPlaceholder) { obj = new Placeholder(objectList.size()); objectMap.put(obj, (Placeholder) obj); objectList.add(obj); return obj; } return obj; } } /** * Replaces certain cir objects that cannot easily be made Serializable. */ public class ReplacingOutputStream extends ObjectOutputStream { public ReplacingOutputStream(OutputStream out) throws IOException { super(out); enableReplaceObject(true); } @Override protected Object replaceObject(Object obj) throws IOException { // is the object a known instance? Placeholder placeholder = objectMap.get(obj); if (placeholder != null) { return placeholder; } // is the object an instance of a class that will always be executed remotely? if (obj instanceof Remote) { return createRemoteCallPlaceholder(obj); } // is the object a constant of object type? if (obj.getClass() == CiConstant.class) { System.out.println("CiConstant " + obj); CiConstant constant = (CiConstant) obj; // don't replace if the object already is a placeholder if (constant.kind == CiKind.Object && !(constant.asObject() instanceof Placeholder) && constant.asObject() != null) { return CiConstant.forObject(createDummyPlaceholder(constant.asObject())); } } return obj; } } public static Class<?>[] getAllInterfaces(Class<?> clazz) { HashSet<Class< ? >> interfaces = new HashSet<Class<?>>(); getAllInterfaces(clazz, interfaces); return interfaces.toArray(new Class<?>[interfaces.size()]); } private static void getAllInterfaces(Class<?> clazz, HashSet<Class<?>> interfaces) { for (Class< ? > iface : clazz.getInterfaces()) { if (!interfaces.contains(iface)) { interfaces.add(iface); getAllInterfaces(iface, interfaces); } } if (clazz.getSuperclass() != null) { getAllInterfaces(clazz.getSuperclass(), interfaces); } } private Object createRemoteCallPlaceholder(Object obj) { // collect all interfaces that this object's class implements (proxies only support interfaces) objectMap.put(obj, new Placeholder(objectList.size())); objectList.add(obj); return new NewRemoteCallPlaceholder(getAllInterfaces(obj.getClass())); } public Object createDummyPlaceholder(Object obj) { objectMap.put(obj, new Placeholder(objectList.size())); objectList.add(obj); return new NewDummyPlaceholder(); } }