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 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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/*

 * @test

 * @bug 5045582

 * @summary arrays larger than 1<<30

 * @author Martin Buchholz

 */

// A proper regression test for 5045582 requires too much memory.

// If you have a really big machine, run like this:

// java -Xms25g -Xmx25g Big 30

import java.util.*;

public class Big {

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

        final int shift = intArg(args, 0, 10); // "30" is real test

        final int tasks = intArg(args, 1, ~0); // all tasks

        final int n = (1<<shift) + 47;

        // To test byte arrays larger than 1<<30, you need 1600MB. Run like:

        // java -Xms1600m -Xmx1600m Big 30 1

        if ((tasks & 0x1) != 0) {

            System.out.println("byte[]");

            System.gc();

            byte[] a = new byte[n];

            a[0]   = (byte) -44;

            a[1]   = (byte) -43;

            a[n-2] = (byte) +43;

            a[n-1] = (byte) +44;

            for (int i : new int[] { 0, 1, n-2, n-1 })

                try { equal(i, Arrays.binarySearch(a, a[i])); }

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

            for (int i : new int[] { n-2, n-1 })

                try { equal(i, Arrays.binarySearch(a, n-5, n, a[i])); }

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

            a[n-19] = (byte) 45;

            try { Arrays.sort(a, n-29, n); }

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

            equal(a[n-1], (byte) 45);

            equal(a[n-2], (byte) 44);

            equal(a[n-3], (byte) 43);

            equal(a[n-4], (byte)  0);

        }

        // To test Object arrays larger than 1<<30, you need 13GB. Run like:

        // java -Xms13g -Xmx13g Big 30 2

        if ((tasks & 0x2) != 0) {

            System.out.println("Integer[]");

            System.gc();

            Integer[] a = new Integer[n];

            Integer ZERO = 0;

            Arrays.fill(a, ZERO);

            a[0]   =  -44;

            a[1]   =  -43;

            a[n-2] =  +43;

            a[n-1] =  +44;

            for (int i : new int[] { 0, 1, n-2, n-1 })

                try { equal(i, Arrays.binarySearch(a, a[i])); }

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

            for (int i : new int[] { n-2, n-1 })

                try { equal(i, Arrays.binarySearch(a, n-5, n, a[i])); }

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

            a[n-19] = 45;

            try { Arrays.sort(a, n-29, n); }

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

            equal(a[n-1],  45);

            equal(a[n-2],  44);

            equal(a[n-3],  43);

            equal(a[n-4],   0);

        }

    }

    //--------------------- 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");}

    static int intArg(String[] args, int i, int defaultValue) {

        return args.length > i ? Integer.parseInt(args[i]) : defaultValue;}

}