250 lines
9.4 KiB
Java
250 lines
9.4 KiB
Java
/*
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* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2021, BELLSOFT. 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 8266310
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* @summary Checks if there's no deadlock between the two lock objects -
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* class loading lock and ClassLoader.loadedLibraryNames hashmap.
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* @library /test/lib
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* @build LoadLibraryDeadlock Class1 p.Class2
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* @run main/othervm/native -Xcheck:jni TestLoadLibraryDeadlock
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*/
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import jdk.test.lib.Asserts;
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import jdk.test.lib.JDKToolFinder;
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import jdk.test.lib.process.*;
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import jdk.test.lib.util.FileUtils;
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import java.lang.ProcessBuilder;
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import java.lang.Process;
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import java.nio.file.Paths;
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import java.io.*;
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import java.util.*;
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import java.util.concurrent.*;
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import java.util.spi.ToolProvider;
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public class TestLoadLibraryDeadlock {
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private static final ToolProvider JAR = ToolProvider.findFirst("jar")
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.orElseThrow(() -> new RuntimeException("ToolProvider for jar not found"));
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private static final String KEYSTORE = "keystore.jks";
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private static final String STOREPASS = "changeit";
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private static final String KEYPASS = "changeit";
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private static final String ALIAS = "test";
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private static final String DNAME = "CN=test";
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private static final String VALIDITY = "366";
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private static String testClassPath = System.getProperty("test.classes");
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private static String testLibraryPath = System.getProperty("test.nativepath");
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private static String classPathSeparator = System.getProperty("path.separator");
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private static OutputAnalyzer runCommand(File workingDirectory, String... commands) throws Throwable {
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ProcessBuilder pb = new ProcessBuilder(commands);
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pb.directory(workingDirectory);
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System.out.println("COMMAND: " + String.join(" ", commands));
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return ProcessTools.executeProcess(pb);
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}
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private static OutputAnalyzer runCommandInTestClassPath(String... commands) throws Throwable {
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return runCommand(new File(testClassPath), commands);
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}
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private static OutputAnalyzer genKey() throws Throwable {
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FileUtils.deleteFileIfExistsWithRetry(
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Paths.get(testClassPath, KEYSTORE));
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String keytool = JDKToolFinder.getJDKTool("keytool");
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return runCommandInTestClassPath(keytool,
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"-storepass", STOREPASS,
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"-keypass", KEYPASS,
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"-keystore", KEYSTORE,
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"-keyalg", "rsa", "-keysize", "2048",
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"-genkeypair",
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"-alias", ALIAS,
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"-dname", DNAME,
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"-validity", VALIDITY
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);
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}
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private static void createJar(String outputJar, String... classes) throws Throwable {
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List<String> args = new ArrayList<>();
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Collections.addAll(args, "cvf", Paths.get(testClassPath, outputJar).toString());
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for (String c : classes) {
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Collections.addAll(args, "-C", testClassPath, c);
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}
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if (JAR.run(System.out, System.err, args.toArray(new String[0])) != 0) {
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throw new RuntimeException("jar operation failed");
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}
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}
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private static OutputAnalyzer signJar(String jarToSign) throws Throwable {
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String jarsigner = JDKToolFinder.getJDKTool("jarsigner");
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return runCommandInTestClassPath(jarsigner,
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"-keystore", KEYSTORE,
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"-storepass", STOREPASS,
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jarToSign, ALIAS
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);
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}
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private static Process runJavaCommand(String... command) throws Throwable {
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String java = JDKToolFinder.getJDKTool("java");
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List<String> commands = new ArrayList<>();
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Collections.addAll(commands, java);
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Collections.addAll(commands, command);
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System.out.println("COMMAND: " + String.join(" ", commands));
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return new ProcessBuilder(commands.toArray(new String[0]))
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.redirectErrorStream(true)
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.directory(new File(testClassPath))
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.start();
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}
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private static OutputAnalyzer jcmd(long pid, String command) throws Throwable {
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String jcmd = JDKToolFinder.getJDKTool("jcmd");
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return runCommandInTestClassPath(jcmd,
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String.valueOf(pid),
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command
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);
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}
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private static String readAvailable(final InputStream is) throws Throwable {
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final List<String> list = Collections.synchronizedList(new ArrayList<String>());
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ExecutorService executor = Executors.newFixedThreadPool(2);
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Future<String> future = executor.submit(new Callable<String>() {
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public String call() {
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String result = new String();
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BufferedReader reader = new BufferedReader(new InputStreamReader(is));
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try {
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while(true) {
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String s = reader.readLine();
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if (s.length() > 0) {
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list.add(s);
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result += s + "\n";
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}
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}
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} catch (IOException ignore) {}
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return result;
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}
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});
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try {
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return future.get(1000, TimeUnit.MILLISECONDS);
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} catch (Exception ignoreAll) {
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future.cancel(true);
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return String.join("\n", list);
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}
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}
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private final static long countLines(OutputAnalyzer output, String string) {
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return output.asLines()
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.stream()
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.filter(s -> s.contains(string))
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.count();
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}
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private final static void dump(OutputAnalyzer output) {
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output.asLines()
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.stream()
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.forEach(s -> System.out.println(s));
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}
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public static void main(String[] args) throws Throwable {
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genKey()
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.shouldHaveExitValue(0);
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FileUtils.deleteFileIfExistsWithRetry(
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Paths.get(testClassPath, "a.jar"));
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FileUtils.deleteFileIfExistsWithRetry(
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Paths.get(testClassPath, "b.jar"));
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FileUtils.deleteFileIfExistsWithRetry(
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Paths.get(testClassPath, "c.jar"));
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createJar("a.jar",
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"LoadLibraryDeadlock.class",
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"LoadLibraryDeadlock$1.class",
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"LoadLibraryDeadlock$2.class");
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createJar("b.jar",
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"Class1.class");
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createJar("c.jar",
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"p/Class2.class");
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signJar("c.jar")
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.shouldHaveExitValue(0);
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// load trigger class
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Process process = runJavaCommand("-cp",
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"a.jar" + classPathSeparator +
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"b.jar" + classPathSeparator +
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"c.jar",
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"-Djava.library.path=" + testLibraryPath,
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"LoadLibraryDeadlock");
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// wait for a while to grab some output
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process.waitFor(5, TimeUnit.SECONDS);
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// dump available output
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String output = readAvailable(process.getInputStream());
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OutputAnalyzer outputAnalyzer = new OutputAnalyzer(output);
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dump(outputAnalyzer);
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// if the process is still running, get the thread dump
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OutputAnalyzer outputAnalyzerJcmd = jcmd(process.pid(), "Thread.print");
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dump(outputAnalyzerJcmd);
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Asserts.assertTrue(
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countLines(outputAnalyzer, "Java-level deadlock") == 0,
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"Found a deadlock.");
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// if no deadlock, make sure all components have been loaded
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Asserts.assertTrue(
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countLines(outputAnalyzer, "Class Class1 not found.") == 0,
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"Unable to load class. Class1 not found.");
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Asserts.assertTrue(
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countLines(outputAnalyzer, "Class Class2 not found.") == 0,
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"Unable to load class. Class2 not found.");
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Asserts.assertTrue(
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countLines(outputAnalyzer, "Native library loaded.") > 0,
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"Unable to load native library.");
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Asserts.assertTrue(
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countLines(outputAnalyzer, "Signed jar loaded.") > 0,
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"Unable to load signed jar.");
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Asserts.assertTrue(
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countLines(outputAnalyzer, "Signed jar loaded from native library.") > 0,
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"Unable to load signed jar from native library.");
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if (!process.waitFor(5, TimeUnit.SECONDS)) {
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// if the process is still frozen, fail the test even though
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// the "deadlock" text hasn't been found
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process.destroyForcibly();
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Asserts.assertTrue(process.waitFor() == 0,
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"Process frozen.");
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}
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}
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}
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