89 lines
3.5 KiB
Java
89 lines
3.5 KiB
Java
/*
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* Copyright (c) 2017, 2021, 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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* @bug 8167108
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* @summary Checks whether jstack reports a "Threads class SMR info" section.
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*
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+EnableThreadSMRStatistics TestThreadDumpSMRInfo
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.JDKToolFinder;
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public class TestThreadDumpSMRInfo {
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// jstack tends to be closely bound to the VM that we are running
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// so use getTestJDKTool() instead of getCompileJDKTool() or even
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// getJDKTool() which can fall back to "compile.jdk".
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final static String JSTACK = JDKToolFinder.getTestJDKTool("jstack");
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final static String PID = "" + ProcessHandle.current().pid();
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// Here's a sample "Threads class SMR info" section:
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//
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// Threads class SMR info:
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// _java_thread_list=0x0000000000ce8da0, length=23, elements={
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// 0x000000000043a800, 0x0000000000aee800, 0x0000000000b06800, 0x0000000000b26000,
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// 0x0000000000b28800, 0x0000000000b2b000, 0x0000000000b2e000, 0x0000000000b30000,
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// 0x0000000000b32800, 0x0000000000b35000, 0x0000000000b3f000, 0x0000000000b41800,
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// 0x0000000000b44000, 0x0000000000b46800, 0x0000000000b48800, 0x0000000000b53000,
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// 0x0000000000b55800, 0x0000000000b57800, 0x0000000000b5a000, 0x0000000000b5c800,
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// 0x0000000000cc8800, 0x0000000000fd9800, 0x0000000000ef4800
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// }
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// _java_thread_list_alloc_cnt=24, _java_thread_list_free_cnt=23, _java_thread_list_max=23, _nested_thread_list_max=0
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// _delete_lock_wait_cnt=0, _delete_lock_wait_max=0
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// _to_delete_list_cnt=0, _to_delete_list_max=1
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final static String HEADER_STR = "Threads class SMR info:";
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static boolean verbose = false;
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public static void main(String[] args) throws Exception {
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if (args.length != 0) {
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int arg_i = 0;
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if (args[arg_i].equals("-v")) {
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verbose = true;
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arg_i++;
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}
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}
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ProcessBuilder pb = new ProcessBuilder(JSTACK, PID);
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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if (verbose) {
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System.out.println("stdout: " + output.getStdout());
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}
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output.shouldHaveExitValue(0);
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System.out.println("INFO: jstack ran successfully.");
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output.shouldContain(HEADER_STR);
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System.out.println("INFO: Found: '" + HEADER_STR + "' in jstack output.");
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System.out.println("Test PASSED.");
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}
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}
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