benchmarks/StringDexCacheBenchmark.java

/*
 * Copyright (C) 2016 Google Inc.
 *
 * 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 benchmarks;

/**
 * How long does it take to access a string in the dex cache?
 */
public class StringDexCacheBenchmark {
    public int timeStringDexCacheAccess(int reps) {
        int v = 0;
        for (int rep = 0; rep < reps; ++rep) {
          // Deliberately obscured to make optimizations less likely.
          String s = (rep >= 0) ? "hello, world!" : null;
          v += s.length();
        }
        return v;
    }
}