/*

 * 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

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 */

import sun.hotspot.WhiteBox;

//

// Help test archived box cache consistency.

//

// Takes two arguments:

// 0: the expected maximum value expected to be archived

// 1: if the values are expected to be retrieved from the archive or not

//    (only applies to IntegerCache; other caches should always be mapped

//    from archive)

//

public class CheckIntegerCacheApp {

    static WhiteBox wb;

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

        wb = WhiteBox.getWhiteBox();

        if (!wb.areOpenArchiveHeapObjectsMapped()) {

            System.out.println("This may happen during normal operation. Test Skipped.");

            return;

        }

        if (args.length != 2) {

            throw new RuntimeException(

                    "FAILED. Incorrect argument length: " + args.length);

        }

        boolean archivedExpected = Boolean.parseBoolean(args[1]);

        // Base JLS compliance check

        for (int i = -128; i <= 127; i++) {

            if (Integer.valueOf(i) != Integer.valueOf(i)) {

                throw new RuntimeException(

                        "FAILED. All values in range [-128, 127] should be interned in cache: " + i);

            }

            if (Byte.valueOf((byte)i) != Byte.valueOf((byte)i)) {

                throw new RuntimeException(

                        "FAILED. All Byte values in range [-128, 127] should be interned in cache: " + (byte)i);

            }

            if (Short.valueOf((short)i) != Short.valueOf((short)i)) {

                throw new RuntimeException(

                        "FAILED. All Short values in range [-128, 127] should be interned in cache: " + (byte)i);

            }

            if (Long.valueOf(i) != Long.valueOf(i)) {

                throw new RuntimeException(

                        "FAILED. All Long values in range [-128, 127] should be interned in cache: " + i);

            }

            checkArchivedAsExpected(archivedExpected, Integer.valueOf(i));

            checkArchivedAsExpected(true, Byte.valueOf((byte)i));

            checkArchivedAsExpected(true, Short.valueOf((short)i));

            checkArchivedAsExpected(true, Long.valueOf(i));

            // Character cache only values 0 through 127

            if (i >= 0) {

                if (Character.valueOf((char)i) != Character.valueOf((char)i)) {

                    throw new RuntimeException(

                            "FAILED. All Character values in range [0, 127] should be interned in cache: " + i);

                }

                checkArchivedAsExpected(true, Character.valueOf((char)i));

            }

        }

        int high = Integer.parseInt(args[0]);

        if (Integer.valueOf(high) != Integer.valueOf(high)) {

            throw new RuntimeException(

                    "FAILED. Value expected to be retrieved from cache: " + high);

        }

        checkArchivedAsExpected(archivedExpected, Integer.valueOf(high));

        if (Integer.valueOf(high + 1) == Integer.valueOf(high + 1)) {

            throw new RuntimeException(

                    "FAILED. Value not expected to be retrieved from cache: " + high);

        }

        checkArchivedAsExpected(false, Integer.valueOf(high + 1));

        checkArchivedAsExpected(false, Short.valueOf((short)128));

        checkArchivedAsExpected(false, Long.valueOf(128));

        checkArchivedAsExpected(false, Character.valueOf((char)128));

    }

    private static void checkArchivedAsExpected(boolean archivedExpected, Object value) {

        if (archivedExpected) {

            if (!wb.isShared(value)) {

                throw new RuntimeException(

                        "FAILED. Value expected to be archived: " + value +

                        " of type " + value.getClass().getName());

            }

        } else {

            if (wb.isShared(value)) {

                throw new RuntimeException(

                        "FAILED. Value not expected to be archived: " + value +

                        " of type " + value.getClass().getName());

            }

        }

    }

}