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annotate graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/logging/CountingProxy.java @ 21551:5324104ac4f3

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moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 26 May 2015 17:13:37 +0200
parents
children
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21551
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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1 /*
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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6 * under the terms of the GNU General Public License version 2 only, as
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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12 * version 2 for more details (a copy is included in the LICENSE file that
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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13 * accompanied this code).
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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14 *
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15 * You should have received a copy of the GNU General Public License version
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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16 * 2 along with this work; if not, write to the Free Software Foundation,
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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20 * or visit www.oracle.com if you need additional information or have any
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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21 * questions.
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22 */
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23 package com.oracle.jvmci.hotspot.logging;
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24
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25 import java.lang.reflect.*;
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26 import java.util.*;
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27 import java.util.concurrent.*;
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28 import java.util.concurrent.atomic.*;
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29
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30 import com.oracle.graal.debug.*;
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31
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32 /**
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33 * A java.lang.reflect proxy that hierarchically logs all method invocations along with their
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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34 * parameters and return values.
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35 */
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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36 public class CountingProxy<T> implements InvocationHandler {
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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37
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38 public static final boolean ENABLED = Boolean.valueOf(System.getProperty("graal.countcalls"));
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39
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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40 private T delegate;
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41
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42 private ConcurrentHashMap<Method, AtomicLong> calls = new ConcurrentHashMap<>();
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43
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44 public CountingProxy(T delegate) {
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45 assert ENABLED;
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46 TTY.println("Counting proxy for " + delegate.getClass().getSimpleName() + " created");
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
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47 this.delegate = delegate;
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48 proxies.add(this);
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49 }
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50
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51 @Override
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52 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
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53 int argCount = args == null ? 0 : args.length;
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54 if (method.getParameterTypes().length != argCount) {
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55 throw new RuntimeException("wrong parameter count");
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56 }
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57 final Object result;
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58 if (!calls.containsKey(method)) {
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59 calls.putIfAbsent(method, new AtomicLong(0));
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60 }
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61 AtomicLong count = calls.get(method);
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62 count.incrementAndGet();
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63 try {
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64 if (args == null) {
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65 result = method.invoke(delegate);
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66 } else {
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67 result = method.invoke(delegate, args);
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68 }
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69 } catch (InvocationTargetException e) {
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70 throw e.getCause();
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71 }
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72 return result;
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73 }
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74
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75 public static <T> T getProxy(Class<T> interf, T delegate) {
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76 Class<?>[] interfaces = ProxyUtil.getAllInterfaces(delegate.getClass());
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77 Object obj = Proxy.newProxyInstance(interf.getClassLoader(), interfaces, new CountingProxy<>(delegate));
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78 return interf.cast(obj);
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79 }
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80
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81 private static ArrayList<CountingProxy<?>> proxies = new ArrayList<>();
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82
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83 static {
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84 if (ENABLED) {
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85 Runtime.getRuntime().addShutdownHook(new Thread() {
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86
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87 @Override
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88 public void run() {
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89 for (CountingProxy<?> proxy : proxies) {
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90 proxy.print();
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91 }
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92 }
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93 });
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94 }
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95 }
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96
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97 protected void print() {
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98 long sum = 0;
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99 for (Map.Entry<Method, AtomicLong> entry : calls.entrySet()) {
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
100 Method method = entry.getKey();
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
101 long count = entry.getValue().get();
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
102 sum += count;
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
103 TTY.println(delegate.getClass().getSimpleName() + "." + method.getName() + ": " + count);
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
104 }
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
105 TTY.println(delegate.getClass().getSimpleName() + " calls: " + sum);
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
106 }
5324104ac4f3 moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
107 }