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/*
* Copyright (c) 2019, 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.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import jdk.test.lib.Utils;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.JDKToolLauncher;
/*
* @test
* @bug 8222491 8273187 8308033
* @summary Tests if we handle the encoding of jcmd output correctly.
* @library /test/lib
* @run main JcmdOutputEncodingTest
*/
public class JcmdOutputEncodingTest {
public static void main(String[] args) throws Exception {
testThreadDump();
}
private static void testThreadDump() throws Exception {
String marker = "markerName" + "\u00e4\u0bb5".repeat(60);
Charset cs = StandardCharsets.UTF_8;
Thread.currentThread().setName(marker);
JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jcmd");
launcher.addVMArgs(Utils.getTestJavaOpts());
launcher.addVMArg("-Dfile.encoding=" + cs);
launcher.addVMArg("-Dsun.stdout.encoding=" + cs);
launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
boolean isVirtualThread = Thread.currentThread().isVirtual();
Path threadDumpFile = null;
if (isVirtualThread) {
// "jcmd Thread.print" will not print thread dumps of virtual threads.
// So we use "Thread.dump_to_file" command instead and dump the thread
// stacktraces in a file
threadDumpFile = Files.createTempFile(Path.of("."), "jcmd", ".tdump").toAbsolutePath();
launcher.addToolArg("Thread.dump_to_file");
launcher.addToolArg("-overwrite");
launcher.addToolArg(threadDumpFile.toString());
} else {
launcher.addToolArg("Thread.print");
}
ProcessBuilder processBuilder = new ProcessBuilder();
processBuilder.command(launcher.getCommand());
OutputAnalyzer output = ProcessTools.executeProcess(processBuilder, null, cs);
output.shouldHaveExitValue(0);
if (isVirtualThread) {
// verify the file containing the thread dump has the expected text
try (var br = Files.newBufferedReader(threadDumpFile, cs)) {
String line = null;
boolean found = false;
while ((line = br.readLine()) != null) {
if (line.contains(marker)) {
found = true;
break;
}
}
if (!found) {
output.reportDiagnosticSummary();
throw new RuntimeException("'" + marker + "' missing in thread dump in file "
+ threadDumpFile);
}
}
} else {
output.shouldContain(marker);
}
}
}
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