Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/arrayOop.cpp @ 4899:a79cb7c55012
7132690: InstanceKlass:_reference_type should be u1 type
Summary: Change InstanceKlass::_reference_type to u1 type.
Reviewed-by: dholmes, coleenp, acorn
Contributed-by: Jiangli Zhou <jiangli.zhou@oracle.com>
author | jiangli |
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date | Wed, 25 Jan 2012 17:40:51 -0500 |
parents | 3c648b9ad052 |
children | 0382d2b469b2 |
rev | line source |
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0 | 1 /* |
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7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 |
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27 /////////////// Unit tests /////////////// |
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28 |
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29 #ifndef PRODUCT |
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30 |
1972 | 31 #include "oops/arrayOop.hpp" |
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32 #include "utilities/globalDefinitions.hpp" |
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33 |
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34 bool arrayOopDesc::check_max_length_overflow(BasicType type) { |
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35 julong length = max_array_length(type); |
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36 julong bytes_per_element = type2aelembytes(type); |
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37 julong bytes = length * bytes_per_element + header_size_in_bytes(); |
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38 return (julong)(size_t)bytes == bytes; |
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39 } |
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40 |
4708 | 41 void arrayOopDesc::test_max_array_length() { |
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42 assert(check_max_length_overflow(T_BOOLEAN), "size_t overflow for boolean array"); |
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43 assert(check_max_length_overflow(T_CHAR), "size_t overflow for char array"); |
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44 assert(check_max_length_overflow(T_FLOAT), "size_t overflow for float array"); |
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45 assert(check_max_length_overflow(T_DOUBLE), "size_t overflow for double array"); |
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46 assert(check_max_length_overflow(T_BYTE), "size_t overflow for byte array"); |
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47 assert(check_max_length_overflow(T_SHORT), "size_t overflow for short array"); |
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48 assert(check_max_length_overflow(T_INT), "size_t overflow for int array"); |
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49 assert(check_max_length_overflow(T_LONG), "size_t overflow for long array"); |
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50 assert(check_max_length_overflow(T_OBJECT), "size_t overflow for object array"); |
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51 assert(check_max_length_overflow(T_ARRAY), "size_t overflow for array array"); |
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52 assert(check_max_length_overflow(T_NARROWOOP), "size_t overflow for narrowOop array"); |
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53 |
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54 // T_VOID and T_ADDRESS are not supported by max_array_length() |
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55 } |
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56 |
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57 |
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58 #endif //PRODUCT |