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/*
* Copyright (c) 2009, 2017, 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.
*/
/*
* @test
* @bug 4735126
* @summary (cl) ClassLoader.loadClass locks all instances in chain when delegating
* @modules java.base/java.lang:open
* jdk.compiler
* @library /test/lib
* @build jdk.test.lib.compiler.CompilerUtils
* @run main/othervm -Xlog:class+load DelegateTest one-way
* @run main/othervm -Xlog:class+load DelegateTest cross
*/
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;
import jdk.test.lib.compiler.CompilerUtils;
public class DelegateTest implements Runnable {
private static final Path TEST_DIR = Paths.get(System.getProperty("user.dir", "."));
private static final Path SRC_DIR = Paths.get(System.getProperty("test.src"), "src");
private String id;
private DelegatingLoader dl;
private String startClass;
private static DelegatingLoader saLoader, sbLoader;
public static void log(String line) {
System.out.println(line);
}
public static void main(String[] args) throws Exception {
if (!CompilerUtils.compile(SRC_DIR, TEST_DIR)) {
throw new RuntimeException("Failed to compile "
+ SRC_DIR.toAbsolutePath().toString());
}
URL[] url = new URL[1];
try {
url[0] = new URL("file://" + TEST_DIR + File.separator);
} catch (MalformedURLException e) {
e.printStackTrace();
}
// Set up Classloader delegation hierarchy
saLoader = new DelegatingLoader(url);
sbLoader = new DelegatingLoader(url);
String[] saClasses = { "comSA.SupBob", "comSA.Alice" };
String[] sbClasses = { "comSB.SupAlice", "comSB.Bob" };
saLoader.setDelegate(sbClasses, sbLoader);
sbLoader.setDelegate(saClasses, saLoader);
// test one-way delegate
String testType = args[0];
if (testType.equals("one-way")) {
test("comSA.Alice", "comSA.SupBob");
} else if (testType.equals("cross")) {
// test cross delegate
test("comSA.Alice", "comSB.Bob");
} else {
System.out.println("ERROR: unsupported - " + testType);
}
}
private static void test(String clsForSA, String clsForSB) throws InterruptedException {
DelegateTest ia = new DelegateTest("SA", saLoader, clsForSA);
DelegateTest ib = new DelegateTest("SB", sbLoader, clsForSB);
Thread ta = new Thread(ia);
Thread tb = new Thread(ib);
ta.start();
tb.start();
ta.join();
tb.join();
}
public static void sleep() {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
log("Thread interrupted");
}
}
private DelegateTest(String id, DelegatingLoader dl, String startClass) {
this.id = id;
this.dl = dl;
this.startClass = startClass;
}
public void run() {
log("Spawned thread " + id + " running");
try {
// To mirror the WAS deadlock, need to ensure class load
// is routed via the VM.
Class.forName(startClass, true, dl);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
log("Thread " + id + " terminating");
}
}
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