Mercurial > hg > truffle
annotate src/share/vm/utilities/array.hpp @ 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 | d2a62e0f25eb |
| 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 #ifndef SHARE_VM_UTILITIES_ARRAY_HPP |
| 26 #define SHARE_VM_UTILITIES_ARRAY_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "memory/allocation.inline.hpp" | |
| 30 | |
| 0 | 31 // correct linkage required to compile w/o warnings |
| 32 // (must be on file level - cannot be local) | |
| 33 extern "C" { typedef int (*ftype)(const void*, const void*); } | |
| 34 | |
| 35 | |
| 36 class ResourceArray: public ResourceObj { | |
| 37 protected: | |
| 38 int _length; // the number of array elements | |
| 39 void* _data; // the array memory | |
| 40 #ifdef ASSERT | |
| 41 int _nesting; // the resource area nesting level | |
| 42 #endif | |
| 43 | |
| 44 // creation | |
| 45 ResourceArray() { | |
| 46 _length = 0; | |
| 47 _data = NULL; | |
| 48 DEBUG_ONLY(init_nesting();) | |
| 432 | 49 // client may call initialize, at most once |
| 0 | 50 } |
| 51 | |
| 52 | |
| 53 ResourceArray(size_t esize, int length) { | |
| 432 | 54 DEBUG_ONLY(_data = NULL); |
| 55 initialize(esize, length); | |
| 56 } | |
| 57 | |
| 58 void initialize(size_t esize, int length) { | |
| 0 | 59 assert(length >= 0, "illegal length"); |
| 432 | 60 assert(_data == NULL, "must be new object"); |
| 0 | 61 _length = length; |
| 62 _data = resource_allocate_bytes(esize * length); | |
| 63 DEBUG_ONLY(init_nesting();) | |
| 64 } | |
| 65 | |
| 66 #ifdef ASSERT | |
| 67 void init_nesting(); | |
| 68 #endif | |
| 69 | |
| 70 // helper functions | |
| 71 void sort (size_t esize, ftype f); // sort the array | |
| 72 void expand (size_t esize, int i, int& size);// expand the array to include slot i | |
| 73 void remove_at(size_t esize, int i); // remove the element in slot i | |
| 74 | |
| 75 public: | |
| 76 // standard operations | |
| 77 int length() const { return _length; } | |
| 78 bool is_empty() const { return length() == 0; } | |
| 79 }; | |
| 80 | |
| 81 | |
| 82 class CHeapArray: public CHeapObj { | |
| 83 protected: | |
| 84 int _length; // the number of array elements | |
| 85 void* _data; // the array memory | |
| 86 | |
| 87 // creation | |
| 88 CHeapArray() { | |
| 89 _length = 0; | |
| 90 _data = NULL; | |
| 91 } | |
| 92 | |
| 93 | |
| 94 CHeapArray(size_t esize, int length) { | |
| 95 assert(length >= 0, "illegal length"); | |
| 96 _length = length; | |
| 97 _data = (void*) NEW_C_HEAP_ARRAY(char *, esize * length); | |
| 98 } | |
| 99 | |
| 100 #ifdef ASSERT | |
| 101 void init_nesting(); | |
| 102 #endif | |
| 103 | |
| 104 // helper functions | |
| 105 void sort (size_t esize, ftype f); // sort the array | |
| 106 void expand (size_t esize, int i, int& size);// expand the array to include slot i | |
| 107 void remove_at(size_t esize, int i); // remove the element in slot i | |
| 108 | |
| 109 public: | |
| 110 // standard operations | |
| 111 int length() const { return _length; } | |
| 112 bool is_empty() const { return length() == 0; } | |
| 113 }; | |
| 114 | |
| 115 #define define_generic_array(array_name,element_type, base_class) \ | |
| 116 class array_name: public base_class { \ | |
| 117 protected: \ | |
| 118 typedef element_type etype; \ | |
| 119 enum { esize = sizeof(etype) }; \ | |
| 120 \ | |
| 121 void base_remove_at(size_t size, int i) { base_class::remove_at(size, i); } \ | |
| 122 \ | |
| 123 public: \ | |
| 124 /* creation */ \ | |
| 125 array_name() : base_class() {} \ | |
| 126 array_name(const int length) : base_class(esize, length) {} \ | |
| 432 | 127 array_name(const int length, const etype fx) { initialize(length, fx); } \ |
| 128 void initialize(const int length) { base_class::initialize(esize, length); } \ | |
| 129 void initialize(const int length, const etype fx) { \ | |
| 130 initialize(length); \ | |
| 0 | 131 for (int i = 0; i < length; i++) ((etype*)_data)[i] = fx; \ |
| 132 } \ | |
| 133 \ | |
| 134 /* standard operations */ \ | |
| 135 etype& operator [] (const int i) const { \ | |
| 136 assert(0 <= i && i < length(), "index out of bounds"); \ | |
| 137 return ((etype*)_data)[i]; \ | |
| 138 } \ | |
| 139 \ | |
| 140 int index_of(const etype x) const { \ | |
| 141 int i = length(); \ | |
| 142 while (i-- > 0 && ((etype*)_data)[i] != x) ; \ | |
| 143 /* i < 0 || ((etype*)_data)_data[i] == x */ \ | |
| 144 return i; \ | |
| 145 } \ | |
| 146 \ | |
| 147 void sort(int f(etype*, etype*)) { base_class::sort(esize, (ftype)f); } \ | |
| 148 bool contains(const etype x) const { return index_of(x) >= 0; } \ | |
| 149 \ | |
| 150 /* deprecated operations - for compatibility with GrowableArray only */ \ | |
| 151 etype at(const int i) const { return (*this)[i]; } \ | |
| 152 void at_put(const int i, const etype x) { (*this)[i] = x; } \ | |
| 153 etype* adr_at(const int i) { return &(*this)[i]; } \ | |
| 154 int find(const etype x) { return index_of(x); } \ | |
| 155 }; \ | |
| 156 | |
| 157 | |
| 158 #define define_array(array_name,element_type) \ | |
| 159 define_generic_array(array_name, element_type, ResourceArray) | |
| 160 | |
| 161 | |
| 162 #define define_stack(stack_name,array_name) \ | |
| 163 class stack_name: public array_name { \ | |
| 164 protected: \ | |
| 165 int _size; \ | |
| 166 \ | |
| 167 void grow(const int i, const etype fx) { \ | |
| 168 assert(i >= length(), "index too small"); \ | |
| 169 if (i >= size()) expand(esize, i, _size); \ | |
| 170 for (int j = length(); j <= i; j++) ((etype*)_data)[j] = fx; \ | |
| 171 _length = i+1; \ | |
| 172 } \ | |
| 173 \ | |
| 174 public: \ | |
| 175 /* creation */ \ | |
| 432 | 176 stack_name() : array_name() { _size = 0; } \ |
| 177 stack_name(const int size) { initialize(size); } \ | |
| 178 stack_name(const int size, const etype fx) { initialize(size, fx); } \ | |
| 179 void initialize(const int size, const etype fx) { \ | |
| 180 _size = size; \ | |
| 181 array_name::initialize(size, fx); \ | |
| 182 /* _length == size, allocation and size are the same */ \ | |
| 183 } \ | |
| 184 void initialize(const int size) { \ | |
| 185 _size = size; \ | |
| 186 array_name::initialize(size); \ | |
| 187 _length = 0; /* reset length to zero; _size records the allocation */ \ | |
| 188 } \ | |
| 0 | 189 \ |
| 190 /* standard operations */ \ | |
| 191 int size() const { return _size; } \ | |
| 192 \ | |
| 432 | 193 int push(const etype x) { \ |
| 194 int len = length(); \ | |
| 195 if (len >= size()) expand(esize, len, _size); \ | |
| 196 ((etype*)_data)[len] = x; \ | |
| 197 _length = len+1; \ | |
| 198 return len; \ | |
| 0 | 199 } \ |
| 200 \ | |
| 201 etype pop() { \ | |
| 202 assert(!is_empty(), "stack is empty"); \ | |
| 203 return ((etype*)_data)[--_length]; \ | |
| 204 } \ | |
| 205 \ | |
| 206 etype top() const { \ | |
| 207 assert(!is_empty(), "stack is empty"); \ | |
| 208 return ((etype*)_data)[length() - 1]; \ | |
| 209 } \ | |
| 210 \ | |
| 211 void push_all(const stack_name* stack) { \ | |
| 212 const int l = stack->length(); \ | |
| 213 for (int i = 0; i < l; i++) push(((etype*)(stack->_data))[i]); \ | |
| 214 } \ | |
| 215 \ | |
| 216 etype at_grow(const int i, const etype fx) { \ | |
| 217 if (i >= length()) grow(i, fx); \ | |
| 218 return ((etype*)_data)[i]; \ | |
| 219 } \ | |
| 220 \ | |
| 221 void at_put_grow(const int i, const etype x, const etype fx) { \ | |
| 222 if (i >= length()) grow(i, fx); \ | |
| 223 ((etype*)_data)[i] = x; \ | |
| 224 } \ | |
| 225 \ | |
| 226 void truncate(const int length) { \ | |
| 227 assert(0 <= length && length <= this->length(), "illegal length"); \ | |
| 228 _length = length; \ | |
| 229 } \ | |
| 230 \ | |
| 231 void remove_at(int i) { base_remove_at(esize, i); } \ | |
| 232 void remove(etype x) { remove_at(index_of(x)); } \ | |
| 233 \ | |
| 234 /* inserts the given element before the element at index i */ \ | |
| 235 void insert_before(const int i, const etype el) { \ | |
| 236 int len = length(); \ | |
| 237 int new_length = len + 1; \ | |
| 238 if (new_length >= size()) expand(esize, new_length, _size); \ | |
| 239 for (int j = len - 1; j >= i; j--) { \ | |
| 240 ((etype*)_data)[j + 1] = ((etype*)_data)[j]; \ | |
| 241 } \ | |
| 242 _length = new_length; \ | |
| 243 at_put(i, el); \ | |
| 244 } \ | |
| 245 \ | |
| 246 /* inserts contents of the given stack before the element at index i */ \ | |
| 247 void insert_before(const int i, const stack_name *st) { \ | |
| 248 if (st->length() == 0) return; \ | |
| 249 int len = length(); \ | |
| 250 int st_len = st->length(); \ | |
| 251 int new_length = len + st_len; \ | |
| 252 if (new_length >= size()) expand(esize, new_length, _size); \ | |
| 253 int j; \ | |
| 254 for (j = len - 1; j >= i; j--) { \ | |
| 255 ((etype*)_data)[j + st_len] = ((etype*)_data)[j]; \ | |
| 256 } \ | |
| 257 for (j = 0; j < st_len; j++) { \ | |
| 258 ((etype*)_data)[i + j] = ((etype*)st->_data)[j]; \ | |
| 259 } \ | |
| 260 _length = new_length; \ | |
| 261 } \ | |
| 262 \ | |
| 263 /* deprecated operations - for compatibility with GrowableArray only */ \ | |
| 264 int capacity() const { return size(); } \ | |
| 265 void clear() { truncate(0); } \ | |
| 266 void trunc_to(const int length) { truncate(length); } \ | |
| 432 | 267 int append(const etype x) { return push(x); } \ |
| 0 | 268 void appendAll(const stack_name* stack) { push_all(stack); } \ |
| 269 etype last() const { return top(); } \ | |
| 270 }; \ | |
| 271 | |
| 272 | |
| 273 #define define_resource_list(element_type) \ | |
| 274 define_generic_array(element_type##Array, element_type, ResourceArray) \ | |
| 275 define_stack(element_type##List, element_type##Array) | |
| 276 | |
| 277 #define define_resource_pointer_list(element_type) \ | |
| 278 define_generic_array(element_type##Array, element_type *, ResourceArray) \ | |
| 279 define_stack(element_type##List, element_type##Array) | |
| 280 | |
| 281 #define define_c_heap_list(element_type) \ | |
| 282 define_generic_array(element_type##Array, element_type, CHeapArray) \ | |
| 283 define_stack(element_type##List, element_type##Array) | |
| 284 | |
| 285 #define define_c_heap_pointer_list(element_type) \ | |
| 286 define_generic_array(element_type##Array, element_type *, CHeapArray) \ | |
| 287 define_stack(element_type##List, element_type##Array) | |
| 288 | |
| 289 | |
| 290 // Arrays for basic types | |
| 291 | |
| 292 define_array(boolArray, bool) define_stack(boolStack, boolArray) | |
| 293 define_array(intArray , int ) define_stack(intStack , intArray ) | |
| 1972 | 294 |
| 295 #endif // SHARE_VM_UTILITIES_ARRAY_HPP |