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      1 /*
      2  * Copyright 2017 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 package org.conscrypt;
     18 
     19 import static org.conscrypt.TestUtils.getProtocols;
     20 import static org.conscrypt.TestUtils.newTextMessage;
     21 
     22 import java.io.OutputStream;
     23 import java.util.concurrent.ExecutorService;
     24 import java.util.concurrent.Executors;
     25 import java.util.concurrent.Future;
     26 import java.util.concurrent.TimeUnit;
     27 import java.util.concurrent.atomic.AtomicBoolean;
     28 import java.util.concurrent.atomic.AtomicLong;
     29 
     30 /**
     31  * Benchmark for comparing performance of client socket implementations.
     32  */
     33 public final class ClientSocketBenchmark {
     34     /**
     35      * Provider for the benchmark configuration
     36      */
     37     interface Config {
     38         EndpointFactory clientFactory();
     39         EndpointFactory serverFactory();
     40         int messageSize();
     41         String cipher();
     42         ChannelType channelType();
     43     }
     44 
     45     private ClientEndpoint client;
     46     private ServerEndpoint server;
     47     private byte[] message;
     48     private ExecutorService executor;
     49     private Future<?> sendingFuture;
     50     private volatile boolean stopping;
     51 
     52     private static final AtomicLong bytesCounter = new AtomicLong();
     53     private AtomicBoolean recording = new AtomicBoolean();
     54 
     55     ClientSocketBenchmark(Config config) throws Exception {
     56         recording.set(false);
     57 
     58         message = newTextMessage(config.messageSize());
     59 
     60         // Always use the same server for consistency across the benchmarks.
     61         server = config.serverFactory().newServer(
     62                 ChannelType.CHANNEL, config.messageSize(), getProtocols(), ciphers(config));
     63 
     64         server.setMessageProcessor(new ServerEndpoint.MessageProcessor() {
     65             @Override
     66             public void processMessage(byte[] inMessage, int numBytes, OutputStream os) {
     67                 if (recording.get()) {
     68                     // Server received a message, increment the count.
     69                     bytesCounter.addAndGet(numBytes);
     70                 }
     71             }
     72         });
     73         Future<?> connectedFuture = server.start();
     74 
     75         client = config.clientFactory().newClient(
     76             config.channelType(), server.port(), getProtocols(), ciphers(config));
     77         client.start();
     78 
     79         // Wait for the initial connection to complete.
     80         connectedFuture.get(5, TimeUnit.SECONDS);
     81 
     82         executor = Executors.newSingleThreadExecutor();
     83         sendingFuture = executor.submit(new Runnable() {
     84             @Override
     85             public void run() {
     86                 try {
     87                     Thread thread = Thread.currentThread();
     88                     while (!stopping && !thread.isInterrupted()) {
     89                         client.sendMessage(message);
     90                     }
     91                 } finally {
     92                     client.flush();
     93                 }
     94             }
     95         });
     96     }
     97 
     98     void close() throws Exception {
     99         stopping = true;
    100 
    101         // Wait for the sending thread to stop.
    102         sendingFuture.get(5, TimeUnit.SECONDS);
    103 
    104         client.stop();
    105         server.stop();
    106         executor.shutdown();
    107         executor.awaitTermination(5, TimeUnit.SECONDS);
    108     }
    109 
    110     /**
    111      * Simple benchmark for the amount of time to send a given number of messages (used by
    112      * Caliper).
    113      */
    114     void time(final int numMessages) throws Exception {
    115         reset();
    116         recording.set(true);
    117 
    118         while (bytesCounter.get() < numMessages) {
    119             Thread.sleep(50);
    120         }
    121 
    122         recording.set(false);
    123     }
    124 
    125     /**
    126      * Simple benchmark for throughput (used by JMH).
    127      */
    128     void throughput() throws Exception {
    129         recording.set(true);
    130         // Send as many messages as we can in a second.
    131         Thread.sleep(1001);
    132         recording.set(false);
    133     }
    134 
    135     static void reset() {
    136         bytesCounter.set(0);
    137     }
    138 
    139     static long bytesPerSecond() {
    140         return bytesCounter.get();
    141     }
    142 
    143     private String[] ciphers(Config config) {
    144         return new String[] {config.cipher()};
    145     }
    146 }
    147