59 lines
1.6 KiB
Java
59 lines
1.6 KiB
Java
/*
|
|
* Copyright (C) 2012 The Guava Authors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package com.google.common.hash;
|
|
|
|
import com.google.caliper.BeforeExperiment;
|
|
import com.google.caliper.Benchmark;
|
|
import com.google.caliper.Param;
|
|
import java.security.MessageDigest;
|
|
|
|
/**
|
|
* Benchmarks for comparing instance creation of {@link MessageDigest}s.
|
|
*
|
|
* @author Kurt Alfred Kluever
|
|
*/
|
|
public class MessageDigestCreationBenchmark {
|
|
|
|
@Param({"MD5", "SHA-1", "SHA-256", "SHA-384", "SHA-512"})
|
|
private String algorithm;
|
|
|
|
private MessageDigest md;
|
|
|
|
@BeforeExperiment
|
|
void setUp() throws Exception {
|
|
md = MessageDigest.getInstance(algorithm);
|
|
}
|
|
|
|
@Benchmark
|
|
int getInstance(int reps) throws Exception {
|
|
int retValue = 0;
|
|
for (int i = 0; i < reps; i++) {
|
|
retValue ^= MessageDigest.getInstance(algorithm).getDigestLength();
|
|
}
|
|
return retValue;
|
|
}
|
|
|
|
@Benchmark
|
|
int clone(int reps) throws Exception {
|
|
int retValue = 0;
|
|
for (int i = 0; i < reps; i++) {
|
|
retValue ^= ((MessageDigest) md.clone()).getDigestLength();
|
|
}
|
|
return retValue;
|
|
}
|
|
}
|