123 lines
4.7 KiB
Java
123 lines
4.7 KiB
Java
/*
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* Copyright (c) 2023, 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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import java.lang.reflect.InvocationTargetException;
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import java.util.concurrent.ThreadFactory;
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public class DebuggeeWrapper {
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public static String PROPERTY_NAME = "test.thread.factory";
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private static final String OLD_MAIN_THREAD_NAME = "old-m-a-i-n";
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private static ThreadFactory threadFactory = r -> new Thread(r);
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private static final String testThreadFactoryName = System.getProperty(PROPERTY_NAME);
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public static String getTestThreadFactoryName() {
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return testThreadFactoryName;
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}
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public static boolean isVirtual() {
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return "Virtual".equals(testThreadFactoryName);
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}
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public static Thread newThread(Runnable task) {
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return threadFactory.newThread(task);
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}
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public static Thread newThread(Runnable task, String name) {
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Thread t = newThread(task);
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t.setName(name);
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return t;
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}
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public static void main(String[] args) throws Throwable {
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String className = args[0];
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String[] classArgs = new String[args.length - 1];
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System.arraycopy(args, 1, classArgs, 0, args.length - 1);
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Class c = Class.forName(className);
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java.lang.reflect.Method mainMethod = c.getMethod("main", new Class[] { String[].class });
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mainMethod.setAccessible(true);
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if (isVirtual()) {
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threadFactory = Thread.ofVirtual().factory();
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MainThreadGroup tg = new MainThreadGroup();
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Thread vthread = Thread.ofVirtual().unstarted(() -> {
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try {
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mainMethod.invoke(null, new Object[] { classArgs });
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} catch (InvocationTargetException e) {
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tg.uncaughtThrowable = e.getCause();
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} catch (Throwable error) {
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tg.uncaughtThrowable = error;
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}
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});
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Thread.currentThread().setName(OLD_MAIN_THREAD_NAME);
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vthread.setName("main");
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vthread.start();
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vthread.join();
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if (tg.uncaughtThrowable != null) {
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// Note we cant just rethrow tg.uncaughtThrowable because there are tests
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// that track ExceptionEvents, and they will complain about the extra
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// exception. So instead mimic what happens when the main thread exits
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// with an exception.
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System.out.println("Uncaught Exception: " + tg.uncaughtThrowable);
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tg.uncaughtThrowable.printStackTrace(System.out);
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System.exit(1);
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}
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} else if (getTestThreadFactoryName().equals("Kernel")) {
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MainThreadGroup tg = new MainThreadGroup();
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Thread t = new Thread(tg, () -> {
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try {
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mainMethod.invoke(null, new Object[] { classArgs });
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} catch (InvocationTargetException e) {
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tg.uncaughtThrowable = e.getCause();
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} catch (Throwable error) {
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tg.uncaughtThrowable = error;
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}
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});
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t.start();
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t.join();
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if (tg.uncaughtThrowable != null) {
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throw new RuntimeException(tg.uncaughtThrowable);
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}
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} else {
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mainMethod.invoke(null, new Object[] { classArgs });
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}
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}
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static class MainThreadGroup extends ThreadGroup {
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MainThreadGroup() {
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super("MainThreadGroup");
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}
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public void uncaughtException(Thread t, Throwable e) {
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if (e instanceof ThreadDeath) {
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return;
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}
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e.printStackTrace(System.err);
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uncaughtThrowable = e;
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}
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Throwable uncaughtThrowable = null;
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}
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} |