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view test/runtime/7194254/Test7194254.java @ 10405:f2110083203d
8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author | sla |
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date | Mon, 10 Jun 2013 11:30:51 +0200 |
parents | 48087f745a86 |
children |
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/* * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @bug 7194254 * @summary Creates several threads with different java priorities and checks * whether jstack reports correct priorities for them. * * @run main Test7194254 */ import java.io.BufferedReader; import java.io.InputStreamReader; import java.lang.management.ManagementFactory; import java.lang.management.RuntimeMXBean; import java.util.ArrayList; import java.util.List; import java.util.concurrent.CyclicBarrier; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Test7194254 { public static void main(String[] args) throws Exception { final int NUMBER_OF_JAVA_PRIORITIES = Thread.MAX_PRIORITY - Thread.MIN_PRIORITY + 1; final CyclicBarrier barrier = new CyclicBarrier(NUMBER_OF_JAVA_PRIORITIES + 1); for (int p = Thread.MIN_PRIORITY; p <= Thread.MAX_PRIORITY; ++p) { final int priority = p; new Thread("Priority=" + p) { { setPriority(priority); } public void run() { try { barrier.await(); // 1st barrier.await(); // 2nd } catch (Exception exc) { // ignore } } }.start(); } barrier.await(); // 1st int matches = 0; List<String> failed = new ArrayList<>(); try { String pid = getPid(); String jstack = System.getProperty("java.home") + "/../bin/jstack"; Process process = new ProcessBuilder(jstack, pid) .redirectErrorStream(true).start(); Pattern pattern = Pattern.compile( "\\\"Priority=(\\d+)\\\".* prio=(\\d+).*"); try (BufferedReader reader = new BufferedReader( new InputStreamReader(process.getInputStream()))) { String line; while((line = reader.readLine()) != null) { Matcher matcher = pattern.matcher(line); if (matcher.matches()) { matches += 1; String expected = matcher.group(1); String actual = matcher.group(2); if (!expected.equals(actual)) { failed.add(line); } } } } barrier.await(); // 2nd } finally { barrier.reset(); } if (matches != NUMBER_OF_JAVA_PRIORITIES) { throw new AssertionError("matches: expected " + NUMBER_OF_JAVA_PRIORITIES + ", but was " + matches); } if (!failed.isEmpty()) { throw new AssertionError(failed.size() + ":" + failed); } System.out.println("Test passes."); } static String getPid() { RuntimeMXBean runtimebean = ManagementFactory.getRuntimeMXBean(); String vmname = runtimebean.getName(); int i = vmname.indexOf('@'); if (i != -1) { vmname = vmname.substring(0, i); } return vmname; } }