/*

 * Copyright (c) 1997, 2016, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include "precompiled.hpp"

#include "oops/arrayOop.hpp"

#include "oops/oop.inline.hpp"

#include "unittest.hpp"

#include "utilities/globalDefinitions.hpp"

class arrayOopDescTest {

 public:

  static int header_size_in_bytes() {

    return arrayOopDesc::header_size_in_bytes();

  }

};

static bool check_max_length_overflow(BasicType type) {

  julong length = arrayOopDesc::max_array_length(type);

  julong bytes_per_element = type2aelembytes(type);

  julong bytes = length * bytes_per_element

          + arrayOopDescTest::header_size_in_bytes();

  return (julong) (size_t) bytes == bytes;

}

TEST_VM(arrayOopDesc, boolean) {

  ASSERT_PRED1(check_max_length_overflow, T_BOOLEAN);

}

TEST_VM(arrayOopDesc, char) {

  ASSERT_PRED1(check_max_length_overflow, T_CHAR);

}

TEST_VM(arrayOopDesc, float) {

  ASSERT_PRED1(check_max_length_overflow, T_FLOAT);

}

TEST_VM(arrayOopDesc, double) {

  ASSERT_PRED1(check_max_length_overflow, T_DOUBLE);

}

TEST_VM(arrayOopDesc, byte) {

  ASSERT_PRED1(check_max_length_overflow, T_BYTE);

}

TEST_VM(arrayOopDesc, short) {

  ASSERT_PRED1(check_max_length_overflow, T_SHORT);

}

TEST_VM(arrayOopDesc, int) {

  ASSERT_PRED1(check_max_length_overflow, T_INT);

}

TEST_VM(arrayOopDesc, long) {

  ASSERT_PRED1(check_max_length_overflow, T_LONG);

}

TEST_VM(arrayOopDesc, object) {

  ASSERT_PRED1(check_max_length_overflow, T_OBJECT);

}

TEST_VM(arrayOopDesc, array) {

  ASSERT_PRED1(check_max_length_overflow, T_ARRAY);

}

TEST_VM(arrayOopDesc, narrowOop) {

  ASSERT_PRED1(check_max_length_overflow, T_NARROWOOP);

}

// T_VOID and T_ADDRESS are not supported by max_array_length()