| // Copyright 2019 The Bazel Authors. All rights reserved. |
| // |
| // 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.devtools.build.lib.remote.common; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.Stopwatch; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety; |
| import java.time.Duration; |
| |
| /** Reentrant wall clock stopwatch and grpc interceptor for network waits. */ |
| @ThreadSafety.ThreadSafe |
| public class NetworkTime { |
| |
| private final Stopwatch wallTime = Stopwatch.createUnstarted(); |
| private int outstanding = 0; |
| |
| public synchronized void start() { |
| if (!wallTime.isRunning()) { |
| wallTime.start(); |
| } |
| outstanding++; |
| } |
| |
| public synchronized void stop() { |
| if (--outstanding == 0) { |
| wallTime.stop(); |
| } |
| } |
| |
| public Duration getDuration() { |
| return wallTime.elapsed(); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(this) |
| .add("outstanding", outstanding) |
| .add("wallTime", wallTime) |
| .add("wallTime.isRunning", wallTime.isRunning()) |
| .toString(); |
| } |
| |
| } |