Mercurial > hg > truffle

comparison src/share/vm/oops/arrayOop.cpp @ 4137:04b9a2566eec

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge with hsx23/hotspot.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 21:40:27 +0100
parents 6fd81579526f
children 3c648b9ad052
comparison
equal deleted inserted replaced
3737:9dc19b7d89a3 4137:04b9a2566eec
21 * questions. 21 * questions.
22 * 22 *
23 */ 23 */
24 24
25 #include "precompiled.hpp" 25 #include "precompiled.hpp"
26
27 /////////////// Unit tests ///////////////
28
29 #ifndef PRODUCT
30
26 #include "oops/arrayOop.hpp" 31 #include "oops/arrayOop.hpp"
27 #include "oops/objArrayOop.hpp" 32 #include "utilities/globalDefinitions.hpp"
28 #include "oops/oop.inline.hpp"
29 #include "oops/symbol.hpp"
30 33
31 // <<this page is intentionally left blank>> 34 bool arrayOopDesc::check_max_length_overflow(BasicType type) {
35 julong length = max_array_length(type);
36 julong bytes_per_element = type2aelembytes(type);
37 julong bytes = length * bytes_per_element + header_size_in_bytes();
38 return (julong)(size_t)bytes == bytes;
39 }
40
41 bool arrayOopDesc::test_max_array_length() {
42 tty->print_cr("test_max_array_length");
43
44 assert(check_max_length_overflow(T_BOOLEAN), "size_t overflow for boolean array");
45 assert(check_max_length_overflow(T_CHAR), "size_t overflow for char array");
46 assert(check_max_length_overflow(T_FLOAT), "size_t overflow for float array");
47 assert(check_max_length_overflow(T_DOUBLE), "size_t overflow for double array");
48 assert(check_max_length_overflow(T_BYTE), "size_t overflow for byte array");
49 assert(check_max_length_overflow(T_SHORT), "size_t overflow for short array");
50 assert(check_max_length_overflow(T_INT), "size_t overflow for int array");
51 assert(check_max_length_overflow(T_LONG), "size_t overflow for long array");
52 assert(check_max_length_overflow(T_OBJECT), "size_t overflow for object array");
53 assert(check_max_length_overflow(T_ARRAY), "size_t overflow for array array");
54 assert(check_max_length_overflow(T_NARROWOOP), "size_t overflow for narrowOop array");
55
56 // T_VOID and T_ADDRESS are not supported by max_array_length()
57
58 return true;
59 }
60
61
62 #endif //PRODUCT