Mercurial > hg > truffle
annotate src/share/vm/utilities/array.cpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved. |
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| 5 * This code is free software; you can redistribute it and/or modify it | |
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| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
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| 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 | |
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| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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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 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_array.cpp.incl" | |
| 27 | |
| 28 | |
| 29 #ifdef ASSERT | |
| 30 void ResourceArray::init_nesting() { | |
| 31 _nesting = Thread::current()->resource_area()->nesting(); | |
| 32 } | |
| 33 #endif | |
| 34 | |
| 35 | |
| 36 void ResourceArray::sort(size_t esize, ftype f) { | |
| 37 if (!is_empty()) qsort(_data, length(), esize, f); | |
| 38 } | |
| 39 void CHeapArray::sort(size_t esize, ftype f) { | |
| 40 if (!is_empty()) qsort(_data, length(), esize, f); | |
| 41 } | |
| 42 | |
| 43 | |
| 44 void ResourceArray::expand(size_t esize, int i, int& size) { | |
| 45 // make sure we are expanding within the original resource mark | |
| 46 assert( | |
| 47 _nesting == Thread::current()->resource_area()->nesting(), | |
| 48 "allocating outside original resource mark" | |
| 49 ); | |
| 50 // determine new size | |
| 51 if (size == 0) size = 4; // prevent endless loop | |
| 52 while (i >= size) size *= 2; | |
| 53 // allocate and initialize new data section | |
| 54 void* data = resource_allocate_bytes(esize * size); | |
| 55 memcpy(data, _data, esize * length()); | |
| 56 _data = data; | |
| 57 } | |
| 58 | |
| 59 | |
| 60 void CHeapArray::expand(size_t esize, int i, int& size) { | |
| 61 // determine new size | |
| 62 if (size == 0) size = 4; // prevent endless loop | |
| 63 while (i >= size) size *= 2; | |
| 64 // allocate and initialize new data section | |
| 65 void* data = NEW_C_HEAP_ARRAY(char*, esize * size); | |
| 66 memcpy(data, _data, esize * length()); | |
| 67 FREE_C_HEAP_ARRAY(char*, _data); | |
| 68 _data = data; | |
| 69 } | |
| 70 | |
| 71 | |
| 72 void ResourceArray::remove_at(size_t esize, int i) { | |
| 73 assert(0 <= i && i < length(), "index out of bounds"); | |
| 74 _length--; | |
| 75 void* dst = (char*)_data + i*esize; | |
| 76 void* src = (char*)dst + esize; | |
| 77 size_t cnt = (length() - i)*esize; | |
| 78 memmove(dst, src, cnt); | |
| 79 } | |
| 80 | |
| 81 void CHeapArray::remove_at(size_t esize, int i) { | |
| 82 assert(0 <= i && i < length(), "index out of bounds"); | |
| 83 _length--; | |
| 84 void* dst = (char*)_data + i*esize; | |
| 85 void* src = (char*)dst + esize; | |
| 86 size_t cnt = (length() - i)*esize; | |
| 87 memmove(dst, src, cnt); | |
| 88 } |