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 | |
33 | static int () { |
34 | return arrayOopDesc::header_size_in_bytes(); |
35 | } |
36 | }; |
37 | |
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 | |
46 | TEST_VM(arrayOopDesc, boolean) { |
47 | ASSERT_PRED1(check_max_length_overflow, T_BOOLEAN); |
48 | } |
49 | |
50 | TEST_VM(arrayOopDesc, char) { |
51 | ASSERT_PRED1(check_max_length_overflow, T_CHAR); |
52 | } |
53 | |
54 | TEST_VM(arrayOopDesc, float) { |
55 | ASSERT_PRED1(check_max_length_overflow, T_FLOAT); |
56 | } |
57 | |
58 | TEST_VM(arrayOopDesc, double) { |
59 | ASSERT_PRED1(check_max_length_overflow, T_DOUBLE); |
60 | } |
61 | |
62 | TEST_VM(arrayOopDesc, byte) { |
63 | ASSERT_PRED1(check_max_length_overflow, T_BYTE); |
64 | } |
65 | |
66 | TEST_VM(arrayOopDesc, short) { |
67 | ASSERT_PRED1(check_max_length_overflow, T_SHORT); |
68 | } |
69 | |
70 | TEST_VM(arrayOopDesc, int) { |
71 | ASSERT_PRED1(check_max_length_overflow, T_INT); |
72 | } |
73 | |
74 | TEST_VM(arrayOopDesc, long) { |
75 | ASSERT_PRED1(check_max_length_overflow, T_LONG); |
76 | } |
77 | |
78 | TEST_VM(arrayOopDesc, object) { |
79 | ASSERT_PRED1(check_max_length_overflow, T_OBJECT); |
80 | } |
81 | |
82 | TEST_VM(arrayOopDesc, array) { |
83 | ASSERT_PRED1(check_max_length_overflow, T_ARRAY); |
84 | } |
85 | |
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 | |