/*

 * 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.

 */

/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file:

 *

 * Written by Martin Buchholz and Doug Lea with assistance from

 * members of JCP JSR-166 Expert Group and released to the public

 * domain, as explained at

 * http://creativecommons.org/publicdomain/zero/1.0/

 */

/*

 * @test

 * @summary Should be able to shutdown a pool when worker creation failed.

 */

public class FlakyThreadFactory {

    void test(String[] args) throws Throwable {

        test(NullPointerException.class,

             new ThreadFactory() {

                public Thread newThread(Runnable r) {

                    throw new NullPointerException();

                }});

        test(OutOfMemoryError.class,

             new ThreadFactory() {

                public Thread newThread(Runnable r) {

                    new Thread(null, r, "a natural OOME", 1L << 60);

                    // """On some platforms, the value of the stackSize

                    // parameter may have no effect whatsoever."""

                    throw new OutOfMemoryError("artificial OOME");

                }});

        test(null,

             new ThreadFactory() {

                public Thread newThread(Runnable r) {

                    return null;

                }});

    }

    void test(final Class<?> exceptionClass,

              final ThreadFactory failingThreadFactory)

            throws Throwable {

        ThreadFactory flakyThreadFactory = new ThreadFactory() {

            int seq = 0;

            public Thread newThread(Runnable r) {

                if (seq++ < 4)

                    return new Thread(r);

                else

                    return failingThreadFactory.newThread(r);

            }};

        ThreadPoolExecutor pool =

            new ThreadPoolExecutor(10, 10,

                                   0L, TimeUnit.SECONDS,

                                   new LinkedBlockingQueue(),

                                   flakyThreadFactory);

        try {

            for (int i = 0; i < 8; i++)

                pool.submit(new Runnable() { public void run() {} });

            check(exceptionClass == null);

        } catch (Throwable t) {

            /* t.printStackTrace(); */

            check(exceptionClass.isInstance(t));

        }

        pool.shutdown();

        check(pool.awaitTermination(10L, TimeUnit.SECONDS));

    }

    //--------------------- Infrastructure ---------------------------

    volatile int passed = 0, failed = 0;

    void pass() {passed++;}

    void fail() {failed++; Thread.dumpStack();}

    void fail(String msg) {System.err.println(msg); fail();}

    void unexpected(Throwable t) {failed++; t.printStackTrace();}

    void check(boolean cond) {if (cond) pass(); else fail();}

    void equal(Object x, Object y) {

        if (x == null ? y == null : x.equals(y)) pass();

        else fail(x + " not equal to " + y);}

    public static void main(String[] args) throws Throwable {

        new FlakyThreadFactory().instanceMain(args);}

    public void instanceMain(String[] args) throws Throwable {

        try {test(args);} catch (Throwable t) {unexpected(t);}

        System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);

        if (failed > 0) throw new AssertionError("Some tests failed");}

}