Mercurial > hg > graal-compiler
view c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/logging/CountingProxy.java @ 2062:231bf6b9f5ad
Added caching for constant pool entries.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Sat, 22 Jan 2011 17:31:11 +0100 |
parents | 9e5e83ca2259 |
children | 8c426c2891c8 |
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/* * Copyright (c) 2010 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.logging; import java.lang.reflect.*; import java.util.*; /** * A java.lang.reflect proxy that hierarchically logs all method invocations along with their parameters and return * values. * * @author Lukas Stadler */ public class CountingProxy<T> implements InvocationHandler { public static final boolean ENABLED = Boolean.valueOf(System.getProperty("c1x.countcalls")); private T delegate; private Map<Method, Long> calls = new HashMap<Method, Long>(); public CountingProxy(T delegate) { assert ENABLED; System.out.println("Counting proxy for " + delegate.getClass().getSimpleName() + " created"); this.delegate = delegate; proxies.add(this); } @Override public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { int argCount = args == null ? 0 : args.length; if (method.getParameterTypes().length != argCount) { throw new RuntimeException("wrong parameter count"); } final Object result; long count = calls.containsKey(method) ? calls.get(method) : 0; calls.put(method, count + 1); try { if (args == null) { result = method.invoke(delegate); } else { result = method.invoke(delegate, args); } } catch (InvocationTargetException e) { throw e.getCause(); } return result; } public static <T> T getProxy(Class<T> interf, T delegate) { Object obj = Proxy.newProxyInstance(interf.getClassLoader(), new Class[] {interf}, new CountingProxy<T>(delegate)); return interf.cast(obj); } private static ArrayList<CountingProxy> proxies = new ArrayList<CountingProxy>(); static { if (ENABLED) { Runtime.getRuntime().addShutdownHook(new Thread() { @Override public void run() { for (CountingProxy proxy : proxies) { proxy.print(); } } }); } } protected void print() { long sum = 0; for (Map.Entry<Method, Long> entry : calls.entrySet()) { Method method = entry.getKey(); long count = entry.getValue(); sum += count; System.out.println(delegate.getClass().getSimpleName() + "." + method.getName() + ": " + count); } System.out.println(delegate.getClass().getSimpleName() + " calls: " + sum); } }