+++ /dev/null
-/*
- * Copyright (C) 2015, EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-package org.lttng.ust.agent.benchmarks.jul.handler;
-
-import java.util.LinkedList;
-import java.util.List;
-import java.util.logging.Handler;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-
-/**
- * Base abstract class for JUL benchmarks. Sub-classes can setup parameters to
- * test different types of log handlers.
- */
-public abstract class JulHandlerBenchmarkBase {
-
- // ------------------------------------------------------------------------
- // Configurable test parameters
- // ------------------------------------------------------------------------
-
- /** Nb of runs per test, result will be averaged */
- private static final int NB_RUNS = 10;
-
- /** Trace/log events per run */
- private static final int NB_ITER = 100000;
-
- /** Which tests to run (for different number of threads) */
- private static final int[] NB_THREADS = {1, 1, 2, 3, 4, 5, 6, 7, 8};
-
- // ------------------------------------------------------------------------
- // Attributes
- // ------------------------------------------------------------------------
-
- protected Logger logger;
- protected Handler handler;
-
- // ------------------------------------------------------------------------
- // Maintenance methods
- // ------------------------------------------------------------------------
-
- /**
- * Base test setup
- */
- @Before
- public void setup() {
- /* Set up the logger */
- logger = Logger.getLogger("Test logger");
- logger.setUseParentHandlers(false);
- logger.setLevel(Level.ALL);
-
- /* Sub-classes' @Before will setup the Handler */
- }
-
- /**
- * Base test teardown
- */
- @After
- public void teardown() {
- if (handler != null) {
- logger.removeHandler(handler);
- handler.close();
- }
- handler = null;
- logger = null;
- }
-
- // ------------------------------------------------------------------------
- // Test methods
- // ------------------------------------------------------------------------
-
- /**
- * Main test class for running the benchmark
- */
- @Test
- public void runBenchmark() {
- if (handler != null) {
- logger.addHandler(handler);
- }
-
- System.out.println();
- System.out.println("Running benchmark: " + this.getClass().getCanonicalName());
- for (int i : NB_THREADS) {
- runTest(logger, i);
- }
- }
-
- private static void runTest(Logger log, int nbThreads) {
- long start, end, average, total = 0;
- for (int i = 0; i < NB_RUNS; i++) {
- Runner runner = new Runner(nbThreads, NB_ITER, log);
-
- start = System.nanoTime();
- runner.run();
- end = System.nanoTime();
-
- total += (end - start);
- }
- average = total / NB_RUNS;
- System.out.println(nbThreads + " threads, average = " + average / NB_ITER + " ns/event");
- }
-
- // ------------------------------------------------------------------------
- // Helper classes
- // ------------------------------------------------------------------------
-
- private static class Runner implements Runnable {
-
- private final List<Worker> workers = new LinkedList<>();
- private final List<Thread> workerThreads = new LinkedList<>();
-
- public Runner(int nbThreads, int nbIter, Logger log) {
-
- for (int id = 0; id < nbThreads; id++) {
- Worker curWorker = new Worker(id, nbIter, log);
- workers.add(curWorker);
- workerThreads.add(new Thread(curWorker, "worker " + id));
- }
- }
-
- @Override
- public void run() {
- for (Thread curThread : workerThreads) {
- curThread.start();
- }
-
- for (Thread curThread : workerThreads) {
- try {
- curThread.join();
- } catch (InterruptedException e) {
- e.printStackTrace();
- }
- }
- }
-
- private static class Worker implements Runnable {
-
- private final Logger log;
- private final int threadId;
- private final int nbIter;
-
- public Worker(int threadId, int nbIter, Logger log) {
- this.log = log;
- this.threadId = threadId;
- this.nbIter = nbIter;
- }
-
- @Override
- public void run() {
- for (int i = 0; i < nbIter; i++) {
- log.info("Thread " + threadId + ", iteration " + i);
- }
- }
-
- }
- }
-}
projects / lttng-ust-java-tests.git / blobdiff