1 /* 2 * Copyright 2016 The gRPC Authors 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 io.grpc; 18 19 import java.util.concurrent.TimeUnit; 20 import org.openjdk.jmh.annotations.Benchmark; 21 import org.openjdk.jmh.annotations.BenchmarkMode; 22 import org.openjdk.jmh.annotations.GroupThreads; 23 import org.openjdk.jmh.annotations.Mode; 24 import org.openjdk.jmh.annotations.OutputTimeUnit; 25 import org.openjdk.jmh.annotations.Scope; 26 import org.openjdk.jmh.annotations.State; 27 28 /** StatusBenchmark. */ 29 @State(Scope.Benchmark) 30 public class AttachDetachBenchmark { 31 32 private final Context.Key<Integer> key = Context.keyWithDefault("key", 9999); 33 private final Context cu = Context.current().withValue(key, 8888); 34 35 /** 36 * Javadoc comment. 37 */ 38 @Benchmark 39 @BenchmarkMode(Mode.SampleTime) 40 @OutputTimeUnit(TimeUnit.NANOSECONDS) 41 @GroupThreads(6) attachDetach()42 public int attachDetach() { 43 Context old = cu.attach(); 44 try { 45 return key.get(); 46 } finally { 47 Context.current().detach(old); 48 } 49 } 50 } 51