Mercurial > hg > truffle
annotate src/share/vm/utilities/array.cpp @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| author | coleenp |
|---|---|
| date | Thu, 27 Jan 2011 16:11:27 -0800 |
| parents | f95d63e2154a |
| children | f08d439fab8c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2000, 2010, 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" |
| 26 #include "memory/resourceArea.hpp" | |
| 27 #include "utilities/array.hpp" | |
| 28 #ifdef TARGET_OS_FAMILY_linux | |
| 29 # include "thread_linux.inline.hpp" | |
| 30 #endif | |
| 31 #ifdef TARGET_OS_FAMILY_solaris | |
| 32 # include "thread_solaris.inline.hpp" | |
| 33 #endif | |
| 34 #ifdef TARGET_OS_FAMILY_windows | |
| 35 # include "thread_windows.inline.hpp" | |
| 36 #endif | |
| 0 | 37 |
| 38 | |
| 39 #ifdef ASSERT | |
| 40 void ResourceArray::init_nesting() { | |
| 41 _nesting = Thread::current()->resource_area()->nesting(); | |
| 42 } | |
| 43 #endif | |
| 44 | |
| 45 | |
| 46 void ResourceArray::sort(size_t esize, ftype f) { | |
| 47 if (!is_empty()) qsort(_data, length(), esize, f); | |
| 48 } | |
| 49 void CHeapArray::sort(size_t esize, ftype f) { | |
| 50 if (!is_empty()) qsort(_data, length(), esize, f); | |
| 51 } | |
| 52 | |
| 53 | |
| 54 void ResourceArray::expand(size_t esize, int i, int& size) { | |
| 55 // make sure we are expanding within the original resource mark | |
| 56 assert( | |
| 57 _nesting == Thread::current()->resource_area()->nesting(), | |
| 58 "allocating outside original resource mark" | |
| 59 ); | |
| 60 // determine new size | |
| 61 if (size == 0) size = 4; // prevent endless loop | |
| 62 while (i >= size) size *= 2; | |
| 63 // allocate and initialize new data section | |
| 64 void* data = resource_allocate_bytes(esize * size); | |
| 65 memcpy(data, _data, esize * length()); | |
| 66 _data = data; | |
| 67 } | |
| 68 | |
| 69 | |
| 70 void CHeapArray::expand(size_t esize, int i, int& size) { | |
| 71 // determine new size | |
| 72 if (size == 0) size = 4; // prevent endless loop | |
| 73 while (i >= size) size *= 2; | |
| 74 // allocate and initialize new data section | |
| 75 void* data = NEW_C_HEAP_ARRAY(char*, esize * size); | |
| 76 memcpy(data, _data, esize * length()); | |
| 77 FREE_C_HEAP_ARRAY(char*, _data); | |
| 78 _data = data; | |
| 79 } | |
| 80 | |
| 81 | |
| 82 void ResourceArray::remove_at(size_t esize, int i) { | |
| 83 assert(0 <= i && i < length(), "index out of bounds"); | |
| 84 _length--; | |
| 85 void* dst = (char*)_data + i*esize; | |
| 86 void* src = (char*)dst + esize; | |
| 87 size_t cnt = (length() - i)*esize; | |
| 88 memmove(dst, src, cnt); | |
| 89 } | |
| 90 | |
| 91 void CHeapArray::remove_at(size_t esize, int i) { | |
| 92 assert(0 <= i && i < length(), "index out of bounds"); | |
| 93 _length--; | |
| 94 void* dst = (char*)_data + i*esize; | |
| 95 void* src = (char*)dst + esize; | |
| 96 size_t cnt = (length() - i)*esize; | |
| 97 memmove(dst, src, cnt); | |
| 98 } |