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/*
* Copyright (c) 2005, 2024, 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.
*/
import java.util.Arrays;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import jdk.test.lib.Utils;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.JDKToolLauncher;
import jtreg.SkippedException;
/*
* @test
* @bug 8273187 8308033
* @summary Unit test for jstack utility
* @library /test/lib
* @run main BasicJStackTest
*/
public class BasicJStackTest {
private static ProcessBuilder processBuilder = new ProcessBuilder();
public static void main(String[] args) throws Exception {
if (Thread.currentThread().isVirtual()) {
// This test runs jstack against the current process and then asserts the
// presence of current thread in the stacktraces. We skip this test
// when the current thread is a virtual thread since "jstack" command doesn't
// print the stacktraces of virtual threads.
throw new SkippedException("skipping test since current thread is a virtual thread");
}
testJstackNoArgs();
testJstack_l();
testJstackUTF8Encoding();
}
private static void testJstackNoArgs() throws Exception {
String marker = "testJstackNoArgs";
OutputAnalyzer output = jstack(marker);
output.shouldHaveExitValue(0);
output.shouldContain(marker);
}
private static void testJstack_l() throws Exception {
String marker = "testJstack_l";
OutputAnalyzer output = jstack(marker, "-l");
output.shouldHaveExitValue(0);
output.shouldContain(marker);
}
private static void testJstackUTF8Encoding() throws Exception {
String marker = "markerName" + "\u00e4\u0bb5".repeat(60);
OutputAnalyzer output = jstack(marker);
output.shouldHaveExitValue(0);
output.shouldContain(marker);
}
private static OutputAnalyzer jstack(String marker, String... toolArgs) throws Exception {
Charset cs = StandardCharsets.UTF_8;
Thread.currentThread().setName(marker);
JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jstack");
launcher.addVMArgs(Utils.getFilteredTestJavaOpts("-XX:+UsePerfData"));
launcher.addVMArg("-XX:+UsePerfData");
launcher.addVMArg("-Dfile.encoding=" + cs);
launcher.addVMArg("-Dsun.stdout.encoding=" + cs);
if (toolArgs != null) {
for (String toolArg : toolArgs) {
launcher.addToolArg(toolArg);
}
}
launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
processBuilder.command(launcher.getCommand());
System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
OutputAnalyzer output = ProcessTools.executeProcess(processBuilder, null, cs);
System.out.println(output.getOutput());
return output;
}
}
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