/*

 * Copyright (c) 2006, 2014, 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

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 * questions.

 */

/*

 * @test

 * @bug 6384064

 * @summary Check proper handling of interrupts

 * @author Martin Buchholz

 */

import static java.util.concurrent.TimeUnit.MILLISECONDS;

import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.ArrayBlockingQueue;

import java.util.concurrent.BlockingDeque;

import java.util.concurrent.BlockingQueue;

import java.util.concurrent.LinkedBlockingDeque;

import java.util.concurrent.LinkedBlockingQueue;

import java.util.concurrent.SynchronousQueue;

import java.util.concurrent.Executor;

import java.util.concurrent.ScheduledThreadPoolExecutor;

public class Interrupt {

    static void checkInterrupted0(Iterable<Fun> fs, Executor ex) {

        for (Fun f : fs) {

            try {

                ex.execute(new Runnable() {

                        final Thread thisThread = Thread.currentThread();

                        public void run() { thisThread.interrupt(); }});

                f.f();

                fail("Expected InterruptedException not thrown");

            } catch (InterruptedException e) {

                check(! Thread.interrupted());

            } catch (Throwable t) { unexpected(t); }

        }

    }

    static void checkInterrupted(Iterable<Fun> fs)

            throws InterruptedException {

        final Executor immediateExecutor = new Executor() {

                public void execute(Runnable r) {

                    r.run(); }};

        final ScheduledThreadPoolExecutor stpe

            = new ScheduledThreadPoolExecutor(1);

        final Executor delayedExecutor = new Executor() {

                public void execute(Runnable r) {

                    stpe.schedule(r, 20, MILLISECONDS); }};

        checkInterrupted0(fs, immediateExecutor);

        checkInterrupted0(fs, delayedExecutor);

        stpe.shutdown();

    }

    static void testQueue(final BlockingQueue<Object> q) {

        try {

            final BlockingDeque<Object> deq =

                (q instanceof BlockingDeque<?>) ?

                (BlockingDeque<Object>) q : null;

            q.clear();

            List<Fun> fs = new ArrayList<Fun>();

            fs.add(() -> q.take());

            if (deq != null) {

                fs.add(() -> deq.takeFirst());

                fs.add(() -> deq.takeLast());

            }

            checkInterrupted(fs);

            // fill q to capacity, to ensure insertions will block

            while (q.remainingCapacity() > 0)

                try { q.put(1); }

                catch (Throwable t) { unexpected(t); }

            fs.clear();

            fs.add(() -> q.put(1));

            if (deq != null) {

                fs.add(() -> deq.putFirst(1));

                fs.add(() -> deq.putLast(1));

            }

            checkInterrupted(fs);

        } catch (Throwable t) {

            System.out.printf("Failed: %s%n", q.getClass().getSimpleName());

            unexpected(t);

        } finally {

            Thread.interrupted();       // clear interrupts, just in case

        }

    }

    private static void realMain(final String[] args) throws Throwable {

        testQueue(new SynchronousQueue<Object>());

        testQueue(new ArrayBlockingQueue<Object>(1,false));

        testQueue(new ArrayBlockingQueue<Object>(1,true));

        testQueue(new LinkedBlockingQueue<Object>(1));

        testQueue(new LinkedBlockingDeque<Object>(1));

    }

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

    static volatile int passed = 0, failed = 0;

    static void pass() {passed++;}

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

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

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

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

    static 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 {

        try {realMain(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");}

    interface Fun {void f() throws Throwable;}

}