1 /*
2  * Copyright (C) 2015 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 public class JniPerfBenchmark {
18   private static final String MSG = "ABCDE";
19 
perfJniEmptyCall()20   native void perfJniEmptyCall();
perfSOACall()21   native void perfSOACall();
perfSOAUncheckedCall()22   native void perfSOAUncheckedCall();
23 
timeFastJNI(int N)24   public void timeFastJNI(int N) {
25     // TODO: This might be an intrinsic.
26     for (long i = 0; i < N; i++) {
27       char c = MSG.charAt(2);
28     }
29   }
30 
timeEmptyCall(int N)31   public void timeEmptyCall(int N) {
32     for (long i = 0; i < N; i++) {
33       perfJniEmptyCall();
34     }
35   }
36 
timeSOACall(int N)37   public void timeSOACall(int N) {
38     for (long i = 0; i < N; i++) {
39       perfSOACall();
40     }
41   }
42 
timeSOAUncheckedCall(int N)43   public void timeSOAUncheckedCall(int N) {
44     for (long i = 0; i < N; i++) {
45       perfSOAUncheckedCall();
46     }
47   }
48 
49   {
50     System.loadLibrary("artbenchmark");
51   }
52 }
53