Mercurial > hg > graal-compiler
annotate graal/Runtime/src/com/sun/hotspot/c1x/logging/CountingProxy.java @ 2297:099e697d8934
Renaming c1x4hotspotsrc => graal and HotSpotVM => Runtime
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 22 Apr 2011 15:08:53 +0200 |
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1 /* |
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2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved. |
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3 * |
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product |
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5 * that is described in this document. In particular, and without limitation, these intellectual property |
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6 * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or |
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7 * more additional patents or pending patent applications in the U.S. and in other countries. |
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8 * |
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun |
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10 * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its |
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11 * supplements. |
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12 * |
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13 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or |
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14 * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks |
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15 * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the |
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16 * U.S. and other countries. |
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17 * |
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18 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open |
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19 * Company, Ltd. |
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20 */ |
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21 package com.sun.hotspot.c1x.logging; |
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22 |
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23 import java.lang.reflect.*; |
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24 import java.util.*; |
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25 |
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26 import com.sun.hotspot.c1x.server.*; |
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27 |
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28 /** |
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29 * A java.lang.reflect proxy that hierarchically logs all method invocations along with their parameters and return |
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30 * values. |
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31 * |
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32 * @author Lukas Stadler |
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33 */ |
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34 public class CountingProxy<T> implements InvocationHandler { |
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35 |
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36 public static final boolean ENABLED = Boolean.valueOf(System.getProperty("c1x.countcalls")); |
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37 |
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38 private T delegate; |
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39 |
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40 private Map<Method, Long> calls = new HashMap<Method, Long>(); |
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41 |
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42 public CountingProxy(T delegate) { |
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43 assert ENABLED; |
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44 System.out.println("Counting proxy for " + delegate.getClass().getSimpleName() + " created"); |
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45 this.delegate = delegate; |
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46 proxies.add(this); |
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47 } |
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48 |
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49 @Override |
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50 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { |
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51 int argCount = args == null ? 0 : args.length; |
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52 if (method.getParameterTypes().length != argCount) { |
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53 throw new RuntimeException("wrong parameter count"); |
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54 } |
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55 final Object result; |
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56 long count = calls.containsKey(method) ? calls.get(method) : 0; |
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57 calls.put(method, count + 1); |
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58 try { |
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59 if (args == null) { |
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60 result = method.invoke(delegate); |
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61 } else { |
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62 result = method.invoke(delegate, args); |
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63 } |
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64 } catch (InvocationTargetException e) { |
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65 throw e.getCause(); |
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66 } |
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67 return result; |
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68 } |
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69 |
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70 public static <T> T getProxy(Class<T> interf, T delegate) { |
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71 Class<?>[] interfaces = ReplacingStreams.getAllInterfaces(delegate.getClass()); |
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72 Object obj = Proxy.newProxyInstance(interf.getClassLoader(), interfaces, new CountingProxy<T>(delegate)); |
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73 return interf.cast(obj); |
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74 } |
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75 |
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76 private static ArrayList<CountingProxy> proxies = new ArrayList<CountingProxy>(); |
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77 |
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78 static { |
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79 if (ENABLED) { |
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80 Runtime.getRuntime().addShutdownHook(new Thread() { |
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81 |
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82 @Override |
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83 public void run() { |
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84 for (CountingProxy proxy : proxies) { |
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85 proxy.print(); |
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86 } |
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87 } |
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88 }); |
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89 } |
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90 } |
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91 |
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92 protected void print() { |
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93 long sum = 0; |
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94 for (Map.Entry<Method, Long> entry : calls.entrySet()) { |
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95 Method method = entry.getKey(); |
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96 long count = entry.getValue(); |
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97 sum += count; |
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98 System.out.println(delegate.getClass().getSimpleName() + "." + method.getName() + ": " + count); |
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99 } |
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100 System.out.println(delegate.getClass().getSimpleName() + " calls: " + sum); |
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101 } |
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102 } |