1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include "precompiled.hpp"
25 #include "oops/arrayOop.hpp"
26 #include "oops/oop.inline.hpp"
27 #include "unittest.hpp"
28 #include "utilities/globalDefinitions.hpp"
29
30 class arrayOopDescTest {
31 public:
32
header_size_in_bytes()33 static int header_size_in_bytes() {
34 return arrayOopDesc::header_size_in_bytes();
35 }
36 };
37
check_max_length_overflow(BasicType type)38 static bool check_max_length_overflow(BasicType type) {
39 julong length = arrayOopDesc::max_array_length(type);
40 julong bytes_per_element = type2aelembytes(type);
41 julong bytes = length * bytes_per_element
42 + arrayOopDescTest::header_size_in_bytes();
43 return (julong) (size_t) bytes == bytes;
44 }
45
TEST_VM(arrayOopDesc,boolean)46 TEST_VM(arrayOopDesc, boolean) {
47 ASSERT_PRED1(check_max_length_overflow, T_BOOLEAN);
48 }
49
TEST_VM(arrayOopDesc,char)50 TEST_VM(arrayOopDesc, char) {
51 ASSERT_PRED1(check_max_length_overflow, T_CHAR);
52 }
53
TEST_VM(arrayOopDesc,float)54 TEST_VM(arrayOopDesc, float) {
55 ASSERT_PRED1(check_max_length_overflow, T_FLOAT);
56 }
57
TEST_VM(arrayOopDesc,double)58 TEST_VM(arrayOopDesc, double) {
59 ASSERT_PRED1(check_max_length_overflow, T_DOUBLE);
60 }
61
TEST_VM(arrayOopDesc,byte)62 TEST_VM(arrayOopDesc, byte) {
63 ASSERT_PRED1(check_max_length_overflow, T_BYTE);
64 }
65
TEST_VM(arrayOopDesc,short)66 TEST_VM(arrayOopDesc, short) {
67 ASSERT_PRED1(check_max_length_overflow, T_SHORT);
68 }
69
TEST_VM(arrayOopDesc,int)70 TEST_VM(arrayOopDesc, int) {
71 ASSERT_PRED1(check_max_length_overflow, T_INT);
72 }
73
TEST_VM(arrayOopDesc,long)74 TEST_VM(arrayOopDesc, long) {
75 ASSERT_PRED1(check_max_length_overflow, T_LONG);
76 }
77
TEST_VM(arrayOopDesc,object)78 TEST_VM(arrayOopDesc, object) {
79 ASSERT_PRED1(check_max_length_overflow, T_OBJECT);
80 }
81
TEST_VM(arrayOopDesc,array)82 TEST_VM(arrayOopDesc, array) {
83 ASSERT_PRED1(check_max_length_overflow, T_ARRAY);
84 }
85
TEST_VM(arrayOopDesc,narrowOop)86 TEST_VM(arrayOopDesc, narrowOop) {
87 ASSERT_PRED1(check_max_length_overflow, T_NARROWOOP);
88 }
89 // T_VOID and T_ADDRESS are not supported by max_array_length()
90