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test/runtime/7194254/Test7194254.java@9f008ad79470 (annotated)

test/runtime/7194254/Test7194254.java

Fri, 28 Sep 2012 13:39:41 -0700

author

amurillo

date

Fri, 28 Sep 2012 13:39:41 -0700

changeset 4118

9f008ad79470

parent 4077

a7509aff1b06

child 4146

48087f745a86

permissions

-rw-r--r--

Added tag hs25-b03 for changeset f2e12eb74117

dholmes@4077	1	/*
dholmes@4077	2	* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
dholmes@4077	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
dholmes@4077	4	*
dholmes@4077	5	* This code is free software; you can redistribute it and/or modify it
dholmes@4077	6	* under the terms of the GNU General Public License version 2 only, as
dholmes@4077	7	* published by the Free Software Foundation.
dholmes@4077	8	*
dholmes@4077	9	* This code is distributed in the hope that it will be useful, but WITHOUT
dholmes@4077	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
dholmes@4077	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
dholmes@4077	12	* version 2 for more details (a copy is included in the LICENSE file that
dholmes@4077	13	* accompanied this code).
dholmes@4077	14	*
dholmes@4077	15	* You should have received a copy of the GNU General Public License version
dholmes@4077	16	* 2 along with this work; if not, write to the Free Software Foundation,
dholmes@4077	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
dholmes@4077	18	*
dholmes@4077	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
dholmes@4077	20	* or visit www.oracle.com if you need additional information or have any
dholmes@4077	21	* questions.
dholmes@4077	22	*/
dholmes@4077	23
dholmes@4077	24	/*
dholmes@4077	25	* @test
dholmes@4077	26	* @bug 7194254
dholmes@4077	27	* @summary Creates several threads with different java priorities and checks
dholmes@4077	28	* whether jstack reports correct priorities for them.
dholmes@4077	29	*
dholmes@4077	30	* @run main T7194254
dholmes@4077	31	*/
dholmes@4077	32
dholmes@4077	33	import java.io.BufferedReader;
dholmes@4077	34	import java.io.InputStreamReader;
dholmes@4077	35	import java.lang.management.ManagementFactory;
dholmes@4077	36	import java.lang.management.RuntimeMXBean;
dholmes@4077	37	import java.util.ArrayList;
dholmes@4077	38	import java.util.List;
dholmes@4077	39	import java.util.concurrent.CyclicBarrier;
dholmes@4077	40	import java.util.regex.Matcher;
dholmes@4077	41	import java.util.regex.Pattern;
dholmes@4077	42
dholmes@4077	43	public class Test7194254 {
dholmes@4077	44
dholmes@4077	45	public static void main(String[] args) throws Exception {
dholmes@4077	46	final int NUMBER_OF_JAVA_PRIORITIES =
dholmes@4077	47	Thread.MAX_PRIORITY - Thread.MIN_PRIORITY + 1;
dholmes@4077	48	final CyclicBarrier barrier =
dholmes@4077	49	new CyclicBarrier(NUMBER_OF_JAVA_PRIORITIES + 1);
dholmes@4077	50
dholmes@4077	51	for (int p = Thread.MIN_PRIORITY; p <= Thread.MAX_PRIORITY; ++p) {
dholmes@4077	52	final int priority = p;
dholmes@4077	53	new Thread("Priority=" + p) {
dholmes@4077	54	{
dholmes@4077	55	setPriority(priority);
dholmes@4077	56	}
dholmes@4077	57	public void run() {
dholmes@4077	58	try {
dholmes@4077	59	barrier.await(); // 1st
dholmes@4077	60	barrier.await(); // 2nd
dholmes@4077	61	} catch (Exception exc) {
dholmes@4077	62	// ignore
dholmes@4077	63	}
dholmes@4077	64	}
dholmes@4077	65	}.start();
dholmes@4077	66	}
dholmes@4077	67	barrier.await(); // 1st
dholmes@4077	68
dholmes@4077	69	int matches = 0;
dholmes@4077	70	List<String> failed = new ArrayList<>();
dholmes@4077	71	try {
dholmes@4077	72	String pid = getPid();
dholmes@4077	73	String jstack = System.getProperty("java.home") + "/../bin/jstack";
dholmes@4077	74	Process process = new ProcessBuilder(jstack, pid)
dholmes@4077	75	.redirectErrorStream(true).start();
dholmes@4077	76	Pattern pattern = Pattern.compile(
dholmes@4077	77	"\\\"Priority=(\\d+)\\\".* prio=(\\d+).*");
dholmes@4077	78	try (BufferedReader reader = new BufferedReader(
dholmes@4077	79	new InputStreamReader(process.getInputStream()))) {
dholmes@4077	80	String line;
dholmes@4077	81	while((line = reader.readLine()) != null) {
dholmes@4077	82	Matcher matcher = pattern.matcher(line);
dholmes@4077	83	if (matcher.matches()) {
dholmes@4077	84	matches += 1;
dholmes@4077	85	String expected = matcher.group(1);
dholmes@4077	86	String actual = matcher.group(2);
dholmes@4077	87	if (!expected.equals(actual)) {
dholmes@4077	88	failed.add(line);
dholmes@4077	89	}
dholmes@4077	90	}
dholmes@4077	91	}
dholmes@4077	92	}
dholmes@4077	93	barrier.await(); // 2nd
dholmes@4077	94	} finally {
dholmes@4077	95	barrier.reset();
dholmes@4077	96	}
dholmes@4077	97
dholmes@4077	98	if (matches != NUMBER_OF_JAVA_PRIORITIES) {
dholmes@4077	99	throw new AssertionError("matches: expected " +
dholmes@4077	100	NUMBER_OF_JAVA_PRIORITIES + ", but was " + matches);
dholmes@4077	101	}
dholmes@4077	102	if (!failed.isEmpty()) {
dholmes@4077	103	throw new AssertionError(failed.size() + ":" + failed);
dholmes@4077	104	}
dholmes@4077	105	System.out.println("Test passes.");
dholmes@4077	106	}
dholmes@4077	107
dholmes@4077	108	static String getPid() {
dholmes@4077	109	RuntimeMXBean runtimebean = ManagementFactory.getRuntimeMXBean();
dholmes@4077	110	String vmname = runtimebean.getName();
dholmes@4077	111	int i = vmname.indexOf('@');
dholmes@4077	112	if (i != -1) {
dholmes@4077	113	vmname = vmname.substring(0, i);
dholmes@4077	114	}
dholmes@4077	115	return vmname;
dholmes@4077	116	}
dholmes@4077	117
dholmes@4077	118	}
dholmes@4077	119