Mercurial > hg > truffle
diff src/share/vm/oops/arrayOop.cpp @ 4137:04b9a2566eec
Merge with hsx23/hotspot.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
---|---|
date | Sat, 17 Dec 2011 21:40:27 +0100 |
parents | 6fd81579526f |
children | 3c648b9ad052 |
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--- a/src/share/vm/oops/arrayOop.cpp Sat Dec 17 20:50:09 2011 +0100 +++ b/src/share/vm/oops/arrayOop.cpp Sat Dec 17 21:40:27 2011 +0100 @@ -23,9 +23,40 @@ */ #include "precompiled.hpp" + +/////////////// Unit tests /////////////// + +#ifndef PRODUCT + #include "oops/arrayOop.hpp" -#include "oops/objArrayOop.hpp" -#include "oops/oop.inline.hpp" -#include "oops/symbol.hpp" +#include "utilities/globalDefinitions.hpp" + +bool arrayOopDesc::check_max_length_overflow(BasicType type) { + julong length = max_array_length(type); + julong bytes_per_element = type2aelembytes(type); + julong bytes = length * bytes_per_element + header_size_in_bytes(); + return (julong)(size_t)bytes == bytes; +} + +bool arrayOopDesc::test_max_array_length() { + tty->print_cr("test_max_array_length"); -// <<this page is intentionally left blank>> + assert(check_max_length_overflow(T_BOOLEAN), "size_t overflow for boolean array"); + assert(check_max_length_overflow(T_CHAR), "size_t overflow for char array"); + assert(check_max_length_overflow(T_FLOAT), "size_t overflow for float array"); + assert(check_max_length_overflow(T_DOUBLE), "size_t overflow for double array"); + assert(check_max_length_overflow(T_BYTE), "size_t overflow for byte array"); + assert(check_max_length_overflow(T_SHORT), "size_t overflow for short array"); + assert(check_max_length_overflow(T_INT), "size_t overflow for int array"); + assert(check_max_length_overflow(T_LONG), "size_t overflow for long array"); + assert(check_max_length_overflow(T_OBJECT), "size_t overflow for object array"); + assert(check_max_length_overflow(T_ARRAY), "size_t overflow for array array"); + assert(check_max_length_overflow(T_NARROWOOP), "size_t overflow for narrowOop array"); + + // T_VOID and T_ADDRESS are not supported by max_array_length() + + return true; +} + + +#endif //PRODUCT