77 lines
2.6 KiB
Java
77 lines
2.6 KiB
Java
/*
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* Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Checks that jstack correctly prints the thread names
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @library ../share
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* @run main/othervm -XX:+UsePerfData ThreadNamesTest
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*/
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import common.ToolResults;
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import utils.*;
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public class ThreadNamesTest {
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private static final String STRANGE_NAME = "-_?+!@#$%^*()";
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private static final String LONG_NAME = "loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong";
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static class NamedThread extends Thread {
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NamedThread(String name) {
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setName(name);
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}
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@Override
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public void run() {
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Utils.sleep();
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}
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}
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public static void main(String[] args) throws Exception {
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testWithName(STRANGE_NAME);
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testWithName("");
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testWithName(LONG_NAME);
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}
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private static void testWithName(String name) throws Exception {
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// Start a thread with some strange name
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NamedThread thread = new NamedThread(name);
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thread.start();
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// Run jstack tool and collect the output
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JstackTool jstackTool = new JstackTool(ProcessHandle.current().pid());
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ToolResults results = jstackTool.measure();
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// Analyze the jstack output for the strange thread name
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JStack jstack1 = new DefaultFormat().parse(results.getStdoutString());
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ThreadStack ti1 = jstack1.getThreadStack(name);
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if (ti1 == null) {
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throw new RuntimeException("jstack output doesn't contain thread info for the thread '" + name + "'");
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}
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}
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}
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