Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/AbstractProfiledItem.java @ 24111:8abcd8e1285d
missing checks in HotSpotMemoryAccessProviderImpl can cause VM assertions to fail (JDK-8177673)
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 30 Mar 2017 21:18:43 +0200 |
parents | 9e1235406b59 |
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Added infrastructure for recording invoked methods in the profiling information.
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1 /* |
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2 * Copyright (c) 2013, 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 |
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6 * under the terms of the GNU General Public License version 2 only, as |
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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 |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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Rename jdk.internal.jvmci to jdk.vm.ci
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23 package jdk.vm.ci.meta; |
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24 |
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25 /** |
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26 * A profiled type that has a probability. Profiled types are naturally sorted in descending order |
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27 * of their probabilities. |
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28 */ |
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removed com.oracle.graal.hotspot.server and uses of Serializable it depended upon (JBS:GRAAL-53)
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29 public abstract class AbstractProfiledItem<T> implements Comparable<AbstractProfiledItem<?>> { |
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30 |
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31 protected final T item; |
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32 protected final double probability; |
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33 |
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34 public AbstractProfiledItem(T item, double probability) { |
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35 assert item != null; |
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36 assert probability >= 0.0D && probability <= 1.0D; |
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37 this.item = item; |
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38 this.probability = probability; |
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39 } |
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40 |
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41 protected T getItem() { |
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42 return item; |
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43 } |
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44 |
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45 /** |
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46 * Returns the estimated probability of {@link #getItem()}. |
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48 * @return double value ≥ 0.0 and ≤ 1.0 | |
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49 */ |
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50 public double getProbability() { |
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51 return probability; |
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52 } |
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53 |
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54 /** |
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55 * Returns -1 if the {@linkplain #getProbability() probability} of this item is greater than |
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56 * {@code o}'s probability, 0 if there are equal otherwise 1. |
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57 */ |
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58 @Override |
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59 public int compareTo(AbstractProfiledItem<?> o) { |
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60 // Need to swap the order of operands so that higher probabilities are sorted first |
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61 return Double.compare(o.getProbability(), getProbability()); |
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62 } |
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63 |
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64 @Override |
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65 public int hashCode() { |
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66 final int prime = 31; |
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67 int result = 1; |
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68 long temp; |
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69 temp = Double.doubleToLongBits(probability); |
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70 result = prime * result + (int) (temp ^ (temp >>> 32)); |
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71 result = prime * result + item.hashCode(); |
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72 return result; |
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73 } |
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74 |
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75 @Override |
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76 public boolean equals(Object obj) { |
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77 if (this == obj) { |
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78 return true; |
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79 } |
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80 if (obj == null) { |
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81 return false; |
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82 } |
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83 if (getClass() != obj.getClass()) { |
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84 return false; |
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85 } |
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86 AbstractProfiledItem<?> other = (AbstractProfiledItem<?>) obj; |
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87 if (Double.doubleToLongBits(probability) != Double.doubleToLongBits(other.probability)) { |
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88 return false; |
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89 } |
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90 return item.equals(other.item); |
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91 } |
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92 |
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93 @Override |
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94 public abstract String toString(); |
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95 } |