duke@435: /*
trims@2708:  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
brutisso@3266: 
brutisso@3266: /////////////// Unit tests ///////////////
brutisso@3266: 
brutisso@3266: #ifndef PRODUCT
brutisso@3266: 
stefank@2314: #include "oops/arrayOop.hpp"
brutisso@3266: #include "utilities/globalDefinitions.hpp"
duke@435: 
brutisso@3266: bool arrayOopDesc::check_max_length_overflow(BasicType type) {
brutisso@3266:   julong length = max_array_length(type);
brutisso@3266:   julong bytes_per_element = type2aelembytes(type);
brutisso@3266:   julong bytes = length * bytes_per_element + header_size_in_bytes();
brutisso@3266:   return (julong)(size_t)bytes == bytes;
brutisso@3266: }
brutisso@3266: 
stefank@3335: void arrayOopDesc::test_max_array_length() {
brutisso@3266:   assert(check_max_length_overflow(T_BOOLEAN), "size_t overflow for boolean array");
brutisso@3266:   assert(check_max_length_overflow(T_CHAR), "size_t overflow for char array");
brutisso@3266:   assert(check_max_length_overflow(T_FLOAT), "size_t overflow for float array");
brutisso@3266:   assert(check_max_length_overflow(T_DOUBLE), "size_t overflow for double array");
brutisso@3266:   assert(check_max_length_overflow(T_BYTE), "size_t overflow for byte array");
brutisso@3266:   assert(check_max_length_overflow(T_SHORT), "size_t overflow for short array");
brutisso@3266:   assert(check_max_length_overflow(T_INT), "size_t overflow for int array");
brutisso@3266:   assert(check_max_length_overflow(T_LONG), "size_t overflow for long array");
brutisso@3266:   assert(check_max_length_overflow(T_OBJECT), "size_t overflow for object array");
brutisso@3266:   assert(check_max_length_overflow(T_ARRAY), "size_t overflow for array array");
brutisso@3266:   assert(check_max_length_overflow(T_NARROWOOP), "size_t overflow for narrowOop array");
brutisso@3266: 
brutisso@3266:   // T_VOID and T_ADDRESS are not supported by max_array_length()
brutisso@3266: }
brutisso@3266: 
brutisso@3266: 
brutisso@3266: #endif //PRODUCT