Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.common/src/jdk/vm/ci/common/JVMCIError.java @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Mon, 18 Sep 2017 18:49:45 +0200 |
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1 /* |
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2 * Copyright (c) 2011, 2014, 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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23 package jdk.vm.ci.common; |
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24 |
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25 import java.util.ArrayList; |
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26 import java.util.Locale; |
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27 |
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28 /** |
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29 * Indicates a condition in JVMCI related code that should never occur during normal operation. |
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30 */ |
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31 public class JVMCIError extends Error { |
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32 |
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33 private static final long serialVersionUID = 531632331813456233L; |
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34 |
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35 public static RuntimeException unimplemented() { |
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36 throw new JVMCIError("unimplemented"); |
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37 } |
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38 |
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39 public static RuntimeException unimplemented(String msg) { |
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40 throw new JVMCIError("unimplemented: %s", msg); |
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41 } |
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42 |
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43 public static RuntimeException shouldNotReachHere() { |
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44 throw new JVMCIError("should not reach here"); |
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45 } |
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46 |
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47 public static RuntimeException shouldNotReachHere(String msg) { |
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48 throw new JVMCIError("should not reach here: %s", msg); |
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49 } |
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50 |
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51 public static RuntimeException shouldNotReachHere(Throwable cause) { |
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52 throw new JVMCIError(cause); |
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53 } |
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54 |
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55 /** |
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56 * Checks a given condition and throws a {@link JVMCIError} if it is false. Guarantees are |
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57 * stronger than assertions in that they are always checked. Error messages for guarantee |
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58 * violations should clearly indicate the nature of the problem as well as a suggested solution |
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59 * if possible. |
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60 * |
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61 * @param condition the condition to check |
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62 * @param msg the message that will be associated with the error, in |
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63 * {@link String#format(String, Object...)} syntax |
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64 * @param args arguments to the format string |
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65 */ |
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66 public static void guarantee(boolean condition, String msg, Object... args) { |
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67 if (!condition) { |
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68 throw new JVMCIError("failed guarantee: " + msg, args); |
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69 } |
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70 } |
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71 |
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72 /** |
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73 * This constructor creates a {@link JVMCIError} with a given message. |
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74 * |
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75 * @param msg the message that will be associated with the error |
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76 */ |
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77 public JVMCIError(String msg) { |
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78 super(msg); |
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79 } |
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80 |
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81 /** |
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82 * This constructor creates a {@link JVMCIError} with a message assembled via |
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83 * {@link String#format(String, Object...)}. It always uses the ENGLISH locale in order to |
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84 * always generate the same output. |
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85 * |
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86 * @param msg the message that will be associated with the error, in String.format syntax |
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87 * @param args parameters to String.format - parameters that implement {@link Iterable} will be |
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88 * expanded into a [x, x, ...] representation. |
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89 */ |
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90 public JVMCIError(String msg, Object... args) { |
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91 super(format(msg, args)); |
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92 } |
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93 |
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94 /** |
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95 * This constructor creates a {@link JVMCIError} for a given causing Throwable instance. |
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96 * |
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97 * @param cause the original exception that contains additional information on this error |
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98 */ |
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99 public JVMCIError(Throwable cause) { |
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100 super(cause); |
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101 } |
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102 |
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103 private static String format(String msg, Object... args) { |
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104 if (args != null) { |
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105 // expand Iterable parameters into a list representation |
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106 for (int i = 0; i < args.length; i++) { |
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107 if (args[i] instanceof Iterable<?>) { |
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108 ArrayList<Object> list = new ArrayList<>(); |
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109 for (Object o : (Iterable<?>) args[i]) { |
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110 list.add(o); |
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111 } |
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112 args[i] = list.toString(); |
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113 } |
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114 } |
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115 } |
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116 return String.format(Locale.ENGLISH, msg, args); |
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117 } |
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118 } |