Paul Duffin | 7fc0b45 | 2015-11-10 17:45:15 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.google.caliper; |
| 18 | |
| 19 | import java.util.Arrays; |
| 20 | import java.util.Set; |
| 21 | |
| 22 | /** |
| 23 | * Signifies a problem that should be explained in user-friendly terms on the command line, without |
| 24 | * a confusing stack trace, and optionally followed by a usage summary. |
| 25 | */ |
| 26 | @SuppressWarnings("serial") // never going to serialize these... right? |
| 27 | public abstract class UserException extends RuntimeException { |
| 28 | protected UserException(String error) { |
| 29 | super(error); |
| 30 | } |
| 31 | |
| 32 | public abstract void display(); |
| 33 | |
| 34 | // - - - - |
| 35 | |
| 36 | public abstract static class ErrorInUsageException extends UserException { |
| 37 | protected ErrorInUsageException(String error) { |
| 38 | super(error); |
| 39 | } |
| 40 | |
| 41 | @Override public void display() { |
| 42 | String message = getMessage(); |
| 43 | if (message != null) { |
| 44 | System.err.println("Error: " + message); |
| 45 | } |
| 46 | Arguments.printUsage(); |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | public abstract static class ErrorInUserCodeException extends UserException { |
| 51 | private final String remedy; |
| 52 | |
| 53 | protected ErrorInUserCodeException(String error, String remedy) { |
| 54 | super(error); |
| 55 | this.remedy = remedy; |
| 56 | } |
| 57 | |
| 58 | @Override public void display() { |
| 59 | System.err.println("Error: " + getMessage()); |
| 60 | System.err.println("Typical Remedy: " + remedy); |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | // - - - - |
| 65 | |
| 66 | // Not technically an error, but works nicely this way anyway |
| 67 | public static class DisplayUsageException extends ErrorInUsageException { |
| 68 | public DisplayUsageException() { |
| 69 | super(null); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | public static class IncompatibleArgumentsException extends ErrorInUsageException { |
| 74 | public IncompatibleArgumentsException(String arg) { |
| 75 | super("Some arguments passed in are incompatible with: " + arg); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | public static class UnrecognizedOptionException extends ErrorInUsageException { |
| 80 | public UnrecognizedOptionException(String arg) { |
| 81 | super("Argument not recognized: " + arg); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | public static class NoBenchmarkClassException extends ErrorInUsageException { |
| 86 | public NoBenchmarkClassException() { |
| 87 | super("No benchmark class specified."); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | public static class MultipleBenchmarkClassesException extends ErrorInUsageException { |
| 92 | public MultipleBenchmarkClassesException(String a, String b) { |
| 93 | super("Multiple benchmark classes specified: " + Arrays.asList(a, b)); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | public static class MalformedParameterException extends ErrorInUsageException { |
| 98 | public MalformedParameterException(String arg) { |
| 99 | super("Malformed parameter: " + arg); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | public static class DuplicateParameterException extends ErrorInUsageException { |
| 104 | public DuplicateParameterException(String arg) { |
| 105 | super("Duplicate parameter: " + arg); |
| 106 | } |
| 107 | public DuplicateParameterException(Set<String> arg) { |
| 108 | super("Duplicate parameters: " + arg); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | public static class InvalidParameterValueException extends ErrorInUsageException { |
| 113 | public InvalidParameterValueException(String arg, String value) { |
| 114 | super("Invalid value \"" + value + "\" for parameter: " + arg); |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | public static class InvalidTrialsException extends ErrorInUsageException { |
| 119 | public InvalidTrialsException(String arg) { |
| 120 | super("Invalid trials: " + arg); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | public static class CantCustomizeInProcessVmException extends ErrorInUsageException { |
| 125 | public CantCustomizeInProcessVmException() { |
| 126 | super("Can't customize VM when running in process."); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | public static class NoSuchClassException extends ErrorInUsageException { |
| 131 | public NoSuchClassException(String name) { |
| 132 | super("No class named [" + name + "] was found (check CLASSPATH)."); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | public static class RuntimeOutOfRangeException extends ErrorInUsageException { |
| 137 | public RuntimeOutOfRangeException( |
| 138 | double nanosPerExecution, double lowerBound, double upperBound) { |
| 139 | super("Runtime " + nanosPerExecution + "ns/rep out of range " |
| 140 | + lowerBound + "-" + upperBound); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | public static class DoesNotScaleLinearlyException extends ErrorInUsageException { |
| 145 | public DoesNotScaleLinearlyException() { |
| 146 | super("Doing 2x as much work didn't take 2x as much time! " |
| 147 | + "Is the JIT optimizing away the body of your benchmark?"); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | public static class NonConstantMemoryUsage extends ErrorInUsageException { |
| 152 | public NonConstantMemoryUsage() { |
| 153 | super("Not all reps of the inner loop allocate the same number of times! " |
| 154 | + "The reps loop should use a constant number of allocations. " |
| 155 | + "Are you using the value of reps inside the loop?"); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | public static class AbstractBenchmarkException extends ErrorInUserCodeException { |
| 160 | public AbstractBenchmarkException(Class<?> specifiedClass) { |
| 161 | super("Class [" + specifiedClass.getName() + "] is abstract.", "Specify a concrete class."); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | public static class NoParameterlessConstructorException extends ErrorInUserCodeException { |
| 166 | public NoParameterlessConstructorException(Class<?> specifiedClass) { |
| 167 | super("Class [" + specifiedClass.getName() + "] has no parameterless constructor.", |
| 168 | "Remove all constructors or add a parameterless constructor."); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | public static class DoesntImplementBenchmarkException extends ErrorInUserCodeException { |
| 173 | public DoesntImplementBenchmarkException(Class<?> specifiedClass) { |
| 174 | super("Class [" + specifiedClass + "] does not implement the " + Benchmark.class.getName() |
| 175 | + " interface.", "Add 'extends " + SimpleBenchmark.class + "' to the class declaration."); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | public static class InvalidDebugRepsException extends ErrorInUsageException { |
| 180 | public InvalidDebugRepsException(String arg) { |
| 181 | super("Invalid debug reps: " + arg); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | // TODO: should remove the caliper stack frames.... |
| 186 | public static class ExceptionFromUserCodeException extends UserException { |
| 187 | public ExceptionFromUserCodeException(Throwable t) { |
| 188 | super("An exception was thrown from the benchmark code."); |
| 189 | initCause(t); |
| 190 | } |
| 191 | @Override public void display() { |
| 192 | System.err.println(getMessage()); |
| 193 | getCause().printStackTrace(System.err); |
| 194 | } |
| 195 | } |
| 196 | } |