Bullet Collision Detection & Physics Library: gim_array.h Source File

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gim_array.h
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1#ifndef GIM_ARRAY_H_INCLUDED
2#define GIM_ARRAY_H_INCLUDED
6/*
7-----------------------------------------------------------------------------
8This source file is part of GIMPACT Library.
9
10For the latest info, see http://gimpact.sourceforge.net/
11
12Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
13email: projectileman@yahoo.com
14
15 This library is free software; you can redistribute it and/or
16 modify it under the terms of EITHER:
17 (1) The GNU Lesser General Public License as published by the Free
18 Software Foundation; either version 2.1 of the License, or (at
19 your option) any later version. The text of the GNU Lesser
20 General Public License is included with this library in the
21 file GIMPACT-LICENSE-LGPL.TXT.
22 (2) The BSD-style license that is included with this library in
23 the file GIMPACT-LICENSE-BSD.TXT.
24 (3) The zlib/libpng license that is included with this library in
25 the file GIMPACT-LICENSE-ZLIB.TXT.
26
27 This library is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
30 GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
31
32-----------------------------------------------------------------------------
33*/
34
35#include "gim_memory.h"
36
37#define GIM_ARRAY_GROW_INCREMENT 2
38#define GIM_ARRAY_GROW_FACTOR 2
39
41template <typename T>
42 class gim_array
43{
44public:
47 T* m_data;
48 GUINT m_size;
49 GUINT m_allocated_size;
53
54 inline void destroyData()
55 {
56 m_allocated_size = 0;
57 if (m_data == NULL) return;
58 gim_free(m_data);
59 m_data = NULL;
60 }
61
62 inline bool resizeData(GUINT newsize)
63 {
64 if (newsize == 0)
65 {
66 destroyData();
67 return true;
68 }
69
70 if (m_size > 0)
71 {
72 m_data = (T*)gim_realloc(m_data, m_size * sizeof(T), newsize * sizeof(T));
73 }
74 else
75 {
76 m_data = (T*)gim_alloc(newsize * sizeof(T));
77 }
78 m_allocated_size = newsize;
79 return true;
80 }
81
82 inline bool growingCheck()
83 {
84 if (m_allocated_size <= m_size)
85 {
86 GUINT requestsize = m_size;
87 m_size = m_allocated_size;
88 if (resizeData((requestsize + GIM_ARRAY_GROW_INCREMENT) * GIM_ARRAY_GROW_FACTOR) == false) return false;
89 }
90 return true;
91 }
92
96 inline bool reserve(GUINT size)
97 {
98 if (m_allocated_size >= size) return false;
99 return resizeData(size);
100 }
101
102 inline void clear_range(GUINT start_range)
103 {
104 while (m_size > start_range)
105 {
106 m_data[--m_size].~T();
107 }
108 }
109
110 inline void clear()
111 {
112 if (m_size == 0) return;
113 clear_range(0);
114 }
115
116 inline void clear_memory()
117 {
118 clear();
119 destroyData();
120 }
121
122 gim_array()
123 {
124 m_data = 0;
125 m_size = 0;
126 m_allocated_size = 0;
127 }
128
129 gim_array(GUINT reservesize)
130 {
131 m_data = 0;
132 m_size = 0;
133
134 m_allocated_size = 0;
135 reserve(reservesize);
136 }
137
138 ~gim_array()
139 {
140 clear_memory();
141 }
142
143 inline GUINT size() const
144 {
145 return m_size;
146 }
147
148 inline GUINT max_size() const
149 {
150 return m_allocated_size;
151 }
152
153 inline T& operator[](size_t i)
154 {
155 return m_data[i];
156 }
157 inline const T& operator[](size_t i) const
158 {
159 return m_data[i];
160 }
161
162 inline T* pointer() { return m_data; }
163 inline const T* pointer() const
164 {
165 return m_data;
166 }
167
168 inline T* get_pointer_at(GUINT i)
169 {
170 return m_data + i;
171 }
172
173 inline const T* get_pointer_at(GUINT i) const
174 {
175 return m_data + i;
176 }
177
178 inline T& at(GUINT i)
179 {
180 return m_data[i];
181 }
182
183 inline const T& at(GUINT i) const
184 {
185 return m_data[i];
186 }
187
188 inline T& front()
189 {
190 return *m_data;
191 }
192
193 inline const T& front() const
194 {
195 return *m_data;
196 }
197
198 inline T& back()
199 {
200 return m_data[m_size - 1];
201 }
202
203 inline const T& back() const
204 {
205 return m_data[m_size - 1];
206 }
207
208 inline void swap(GUINT i, GUINT j)
209 {
210 gim_swap_elements(m_data, i, j);
211 }
212
213 inline void push_back(const T& obj)
214 {
215 this->growingCheck();
216 m_data[m_size] = obj;
217 m_size++;
218 }
219
221 inline void push_back_mem()
222 {
223 this->growingCheck();
224 m_size++;
225 }
226
227 inline void push_back_memcpy(const T& obj)
228 {
229 this->growingCheck();
230 gim_simd_memcpy(&m_data[m_size], &obj, sizeof(T));
231 m_size++;
232 }
233
234 inline void pop_back()
235 {
236 m_size--;
237 m_data[m_size].~T();
238 }
239
241 inline void pop_back_mem()
242 {
243 m_size--;
244 }
245
247 inline void erase(GUINT index)
248 {
249 if (index < m_size - 1)
250 {
251 swap(index, m_size - 1);
252 }
253 pop_back();
254 }
255
256 inline void erase_sorted_mem(GUINT index)
257 {
258 m_size--;
259 for (GUINT i = index; i < m_size; i++)
260 {
261 gim_simd_memcpy(m_data + i, m_data + i + 1, sizeof(T));
262 }
263 }
264
265 inline void erase_sorted(GUINT index)
266 {
267 m_data[index].~T();
268 erase_sorted_mem(index);
269 }
270
271 inline void insert_mem(GUINT index)
272 {
273 this->growingCheck();
274 for (GUINT i = m_size; i > index; i--)
275 {
276 gim_simd_memcpy(m_data + i, m_data + i - 1, sizeof(T));
277 }
278 m_size++;
279 }
280
281 inline void insert(const T& obj, GUINT index)
282 {
283 insert_mem(index);
284 m_data[index] = obj;
285 }
286
287 inline void resize(GUINT size, bool call_constructor = true, const T& fillData = T())
288 {
289 if (size > m_size)
290 {
291 reserve(size);
292 if (call_constructor)
293 {
294 while (m_size < size)
295 {
296 m_data[m_size] = fillData;
297 m_size++;
298 }
299 }
300 else
301 {
302 m_size = size;
303 }
304 }
305 else if (size < m_size)
306 {
307 if (call_constructor) clear_range(size);
308 m_size = size;
309 }
310 }
311
312 inline void refit()
313 {
314 resizeData(m_size);
315 }
316};
317
318#endif // GIM_CONTAINERS_H_INCLUDED
gim_array
Very simple array container with fast access and simd memory.
Definition: gim_array.h:43
gim_array::erase
void erase(GUINT index)
fast erase
Definition: gim_array.h:247
gim_array::operator[]
T & operator[](size_t i)
Definition: gim_array.h:153
gim_array::at
T & at(GUINT i)
Definition: gim_array.h:178
gim_array::pointer
const T * pointer() const
Definition: gim_array.h:163
gim_array::m_size
GUINT m_size
Definition: gim_array.h:48
gim_array::operator[]
const T & operator[](size_t i) const
Definition: gim_array.h:157
gim_array::front
const T & front() const
Definition: gim_array.h:193
gim_array::back
T & back()
Definition: gim_array.h:198
gim_array::gim_array
gim_array(GUINT reservesize)
Definition: gim_array.h:129
gim_array::get_pointer_at
T * get_pointer_at(GUINT i)
Definition: gim_array.h:168
gim_array::push_back
void push_back(const T &obj)
Definition: gim_array.h:213
gim_array::reserve
bool reserve(GUINT size)
public operations
Definition: gim_array.h:96
gim_array::~gim_array
~gim_array()
Definition: gim_array.h:138
gim_array::get_pointer_at
const T * get_pointer_at(GUINT i) const
Definition: gim_array.h:173
gim_array::gim_array
gim_array()
Definition: gim_array.h:122
gim_array::at
const T & at(GUINT i) const
Definition: gim_array.h:183
gim_array::size
GUINT size() const
Definition: gim_array.h:143
gim_array::erase_sorted_mem
void erase_sorted_mem(GUINT index)
Definition: gim_array.h:256
gim_array::max_size
GUINT max_size() const
Definition: gim_array.h:148
gim_array::push_back_memcpy
void push_back_memcpy(const T &obj)
Definition: gim_array.h:227
gim_array::erase_sorted
void erase_sorted(GUINT index)
Definition: gim_array.h:265
gim_array::swap
void swap(GUINT i, GUINT j)
Definition: gim_array.h:208
gim_array::resizeData
bool resizeData(GUINT newsize)
Definition: gim_array.h:62
gim_array::pop_back_mem
void pop_back_mem()
Simply decrease the m_size, doesn't call the deleted element destructor.
Definition: gim_array.h:241
gim_array::insert
void insert(const T &obj, GUINT index)
Definition: gim_array.h:281
gim_array::resize
void resize(GUINT size, bool call_constructor=true, const T &fillData=T())
Definition: gim_array.h:287
gim_array::destroyData
void destroyData()
protected operations
Definition: gim_array.h:54
gim_array::growingCheck
bool growingCheck()
Definition: gim_array.h:82
gim_array::clear
void clear()
Definition: gim_array.h:110
gim_array::clear_range
void clear_range(GUINT start_range)
Definition: gim_array.h:102
gim_array::m_data
T * m_data
properties
Definition: gim_array.h:47
gim_array::m_allocated_size
GUINT m_allocated_size
Definition: gim_array.h:49
gim_array::front
T & front()
Definition: gim_array.h:188
gim_array::push_back_mem
void push_back_mem()
Simply increase the m_size, doesn't call the new element constructor.
Definition: gim_array.h:221
gim_array::insert_mem
void insert_mem(GUINT index)
Definition: gim_array.h:271
gim_array::refit
void refit()
Definition: gim_array.h:312
gim_array::back
const T & back() const
Definition: gim_array.h:203
gim_array::pointer
T * pointer()
Definition: gim_array.h:162
gim_array::pop_back
void pop_back()
Definition: gim_array.h:234
gim_array::clear_memory
void clear_memory()
Definition: gim_array.h:116
GIM_ARRAY_GROW_INCREMENT
#define GIM_ARRAY_GROW_INCREMENT
Definition: gim_array.h:37
GIM_ARRAY_GROW_FACTOR
#define GIM_ARRAY_GROW_FACTOR
Definition: gim_array.h:38
GUINT
#define GUINT
Definition: gim_math.h:40
gim_alloc
void * gim_alloc(size_t size)
Standar Memory functions.
Definition: gim_memory.cpp:82
gim_realloc
void * gim_realloc(void *ptr, size_t oldsize, size_t newsize)
Definition: gim_memory.cpp:108
gim_free
void gim_free(void *ptr)
Definition: gim_memory.cpp:117
gim_memory.h
gim_simd_memcpy
void gim_simd_memcpy(void *dst, const void *src, size_t copysize)
Definition: gim_memory.h:120
gim_swap_elements
void gim_swap_elements(T *_array, size_t _i, size_t _j)
Definition: gim_memory.h:150