82 lines
3.3 KiB
Java
82 lines
3.3 KiB
Java
/*
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* Copyright (c) 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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/*
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* @test
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* @bug 8263640
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* @summary In case of a class path is longer than O_BUFLEN, the class path
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* should not be truncated in the output from jcmd VM.command_line.
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* @library /test/lib
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* @run driver JcmdCmdLine
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*/
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import java.io.File;
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import java.util.List;
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import jdk.test.lib.apps.LingeredApp;
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import jdk.test.lib.dcmd.PidJcmdExecutor;
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import jdk.test.lib.process.OutputAnalyzer;
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public class JcmdCmdLine {
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private static LingeredApp theApp = null;
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private static final int BUFFER_LEN = 2000;
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private static final String JCMD_OPT = "VM.command_line";
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private static final String CLASS_PATH_LINE = "java_class_path (initial):";
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private static final String TRUNCATE_WARNING = "outputStream::do_vsnprintf output truncated";
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public static void main(String[] args) throws Exception {
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try {
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theApp = new LingeredApp();
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theApp.setUseDefaultClasspath(false);
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String classPath = System.getProperty("test.class.path");
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while (classPath.length() < BUFFER_LEN) {
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classPath += File.pathSeparator + classPath;
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}
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LingeredApp.startAppExactJvmOpts(theApp, "-cp", classPath);
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long pid = theApp.getPid();
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PidJcmdExecutor cmdExecutor = new PidJcmdExecutor(String.valueOf(pid));
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OutputAnalyzer output = cmdExecutor.execute(JCMD_OPT, true/*silent*/);
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output.shouldHaveExitValue(0);
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boolean seenClassPath = false;
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List<String> lines = output.asLines();
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for (int i = 0; i < lines.size(); i++) {
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String line = lines.get(i);
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if (line.startsWith(CLASS_PATH_LINE)) {
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seenClassPath = true;
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if (!line.endsWith(classPath)) {
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throw new RuntimeException("Incomplete java_class_path line.");
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}
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}
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}
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if (!seenClassPath) {
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throw new RuntimeException("Missing java_class_path line.");
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}
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} finally {
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LingeredApp.stopApp(theApp);
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if (theApp.getOutput().getStderr().contains(TRUNCATE_WARNING)) {
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throw new RuntimeException("Unexpected truncation warning.");
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}
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}
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}
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}
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