1 /*
2  * Copyright (C) 2020 The Android Open Source Project
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 import java.io.PrintStream;
18 
19 class MicroBenchmark extends BenchmarkBase {
20   private static final int EXERCISE_ITERATIONS = 1000;
21 
MicroBenchmark()22   MicroBenchmark() {
23     super(null);
24   }
25 
26   @Override
getName()27   public String getName() {
28     return getClass().getSimpleName();
29   }
30 
31   @Override
exercise()32   public void exercise() throws Throwable {
33     for (int i = 0; i < EXERCISE_ITERATIONS; ++i) {
34       run();
35     }
36   }
37 
innerIterations()38   public int innerIterations() {
39       return 1;
40   }
41 
42   @Override
report()43   public void report() {
44     try {
45       double microseconds = measure() / (EXERCISE_ITERATIONS * innerIterations());
46       System.out.println(getName() + "(RunTimeRaw): " + microseconds + " us.");
47     } catch (Throwable t) {
48       System.err.println("Exception during the execution of " + getName());
49       System.err.println(t);
50       t.printStackTrace(new PrintStream(System.err));
51       System.exit(1);
52     }
53   }
54 }
55