Rename various things for more inclusive language
[platform/upstream/VK-GL-CTS.git] / framework / delibs / depool / dePoolArray.c
1 /*-------------------------------------------------------------------------
2  * drawElements Memory Pool Library
3  * --------------------------------
4  *
5  * Copyright 2014 The Android Open Source Project
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  *      http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  *
19  *//*!
20  * \file
21  * \brief Memory pool array class.
22  *
23  * Features of the pooled arrays:
24  * - single indirection layer (grows exponentially)
25  * - constant # elements per page
26  * - recycles old indirection tables as element pages
27  * - about 10% overhead on large arrays
28  *//*--------------------------------------------------------------------*/
29
30 #include "dePoolArray.h"
31 #include "deInt32.h"
32
33 #include <stdlib.h>
34 #include <string.h>
35
36 /*--------------------------------------------------------------------*//*!
37  * \internal
38  * \brief Create a new pool array.
39  * \param pool                  Pool to allocate memory from.
40  * \param elementSize   Size of the element to be put in array.
41  * \param Pointer to the created array, or null on failure.
42  *//*--------------------------------------------------------------------*/
43 dePoolArray* dePoolArray_create (deMemPool* pool, int elementSize)
44 {
45         /* Alloc struct. */
46         dePoolArray* arr = DE_POOL_NEW(pool, dePoolArray);
47         if (!arr)
48                 return DE_NULL;
49
50         /* Init array. */
51         memset(arr, 0, sizeof(dePoolArray));
52         arr->pool                       = pool;
53         arr->elementSize        = elementSize;
54
55         return arr;
56 }
57
58 /*--------------------------------------------------------------------*//*!
59  * \internal
60  * \brief Ensure that the array can hold at least N elements.
61  * \param arr   Array pointer.
62  * \param size  Number of elements for which to reserve memory.
63  * \param True on success, false on failure.
64  *//*--------------------------------------------------------------------*/
65 deBool                  dePoolArray_reserve                     (dePoolArray* arr, int size)
66 {
67         if (size >= arr->capacity)
68         {
69                 void*   oldPageTable                    = DE_NULL;
70                 int             oldPageTableSize                = 0;
71
72                 int             newCapacity                             = deAlign32(size, 1 << DE_ARRAY_ELEMENTS_PER_PAGE_LOG2);
73                 int             reqPageTableCapacity    = newCapacity >> DE_ARRAY_ELEMENTS_PER_PAGE_LOG2;
74
75                 if (arr->pageTableCapacity < reqPageTableCapacity)
76                 {
77                         int             newPageTableCapacity    = deMax32(2*arr->pageTableCapacity, reqPageTableCapacity);
78                         void**  newPageTable                    = (void**)deMemPool_alloc(arr->pool, (size_t)newPageTableCapacity * sizeof(void*));
79                         int             i;
80
81                         if (!newPageTable)
82                                 return DE_FALSE;
83
84                         for (i = 0; i < arr->pageTableCapacity; i++)
85                                 newPageTable[i] = arr->pageTable[i];
86
87                         for (; i < newPageTableCapacity; i++)
88                                 newPageTable[i] = DE_NULL;
89
90                         /* Grab information about old page table for recycling purposes. */
91                         oldPageTable            = arr->pageTable;
92                         oldPageTableSize        = arr->pageTableCapacity * (int)sizeof(void*);
93
94                         arr->pageTable                  = newPageTable;
95                         arr->pageTableCapacity  = newPageTableCapacity;
96                 }
97
98                 /* Allocate new pages. */
99                 {
100                         int pageAllocSize = arr->elementSize << DE_ARRAY_ELEMENTS_PER_PAGE_LOG2;
101                         int pageTableNdx = arr->capacity >> DE_ARRAY_ELEMENTS_PER_PAGE_LOG2;
102
103                         /* Allocate new pages from recycled old page table. */
104                         while (oldPageTableSize >= pageAllocSize)
105                         {
106                                 void* newPage = oldPageTable;
107                                 DE_ASSERT(arr->pageTableCapacity > pageTableNdx); /* \todo [petri] is this always true? */
108                                 DE_ASSERT(!arr->pageTable[pageTableNdx]);
109                                 arr->pageTable[pageTableNdx++] = newPage;
110
111                                 oldPageTable = (void*)((deUint8*)oldPageTable + pageAllocSize);
112                                 oldPageTableSize -= pageAllocSize;
113                         }
114
115                         /* Allocate the rest of the needed pages from the pool. */
116                         for (; pageTableNdx < reqPageTableCapacity; pageTableNdx++)
117                         {
118                                 void* newPage = deMemPool_alloc(arr->pool, (size_t)pageAllocSize);
119                                 if (!newPage)
120                                         return DE_FALSE;
121
122                                 DE_ASSERT(!arr->pageTable[pageTableNdx]);
123                                 arr->pageTable[pageTableNdx] = newPage;
124                         }
125
126                         arr->capacity = pageTableNdx << DE_ARRAY_ELEMENTS_PER_PAGE_LOG2;
127                         DE_ASSERT(arr->capacity >= newCapacity);
128                 }
129         }
130
131         return DE_TRUE;
132 }
133
134 /*--------------------------------------------------------------------*//*!
135  * \internal
136  * \brief Set the size of the array (also reserves capacity).
137  * \param arr   Array pointer.
138  * \param size  New size of the array (in elements).
139  * \param True on success, false on failure.
140  *//*--------------------------------------------------------------------*/
141 deBool                  dePoolArray_setSize                     (dePoolArray* arr, int size)
142 {
143         if (!dePoolArray_reserve(arr, size))
144                 return DE_FALSE;
145
146         arr->numElements = size;
147         return DE_TRUE;
148 }
149
150 DE_DECLARE_POOL_ARRAY(dePoolIntArray, int);
151 DE_DECLARE_POOL_ARRAY(dePoolInt16Array, deInt16);
152
153 /*--------------------------------------------------------------------*//*!
154  * \internal
155  * \brief Test array functionality.
156  *//*--------------------------------------------------------------------*/
157 void dePoolArray_selfTest (void)
158 {
159         deMemPool*                      pool    = deMemPool_createRoot(DE_NULL, 0);
160         dePoolIntArray*         arr             = dePoolIntArray_create(pool);
161         dePoolInt16Array*       arr16   = dePoolInt16Array_create(pool);
162         int                                     i;
163
164         /* Test pushBack(). */
165         for (i = 0; i < 5000; i++)
166         {
167                 /* Unused alloc to try to break alignments. */
168                 deMemPool_alloc(pool, 1);
169
170                 dePoolIntArray_pushBack(arr, i);
171                 dePoolInt16Array_pushBack(arr16, (deInt16)i);
172         }
173
174         DE_TEST_ASSERT(dePoolIntArray_getNumElements(arr) == 5000);
175         DE_TEST_ASSERT(dePoolInt16Array_getNumElements(arr16) == 5000);
176         for (i = 0; i < 5000; i++)
177         {
178                 DE_TEST_ASSERT(dePoolIntArray_get(arr, i) == i);
179                 DE_TEST_ASSERT(dePoolInt16Array_get(arr16, i) == i);
180         }
181
182         /* Test popBack(). */
183         for (i = 0; i < 1000; i++)
184         {
185                 DE_TEST_ASSERT(dePoolIntArray_popBack(arr) == (4999 - i));
186                 DE_TEST_ASSERT(dePoolInt16Array_popBack(arr16) == (4999 - i));
187         }
188
189         DE_TEST_ASSERT(dePoolIntArray_getNumElements(arr) == 4000);
190         DE_TEST_ASSERT(dePoolInt16Array_getNumElements(arr16) == 4000);
191         for (i = 0; i < 4000; i++)
192         {
193                 DE_TEST_ASSERT(dePoolIntArray_get(arr, i) == i);
194                 DE_TEST_ASSERT(dePoolInt16Array_get(arr16, i) == i);
195         }
196
197         /* Test setSize(). */
198         dePoolIntArray_setSize(arr, 1000);
199         dePoolInt16Array_setSize(arr16, 1000);
200         for (i = 1000; i < 5000; i++)
201         {
202                 dePoolIntArray_pushBack(arr, i);
203                 dePoolInt16Array_pushBack(arr16, (deInt16)i);
204         }
205
206         DE_TEST_ASSERT(dePoolIntArray_getNumElements(arr) == 5000);
207         DE_TEST_ASSERT(dePoolInt16Array_getNumElements(arr16) == 5000);
208         for (i = 0; i < 5000; i++)
209         {
210                 DE_TEST_ASSERT(dePoolIntArray_get(arr, i) == i);
211                 DE_TEST_ASSERT(dePoolInt16Array_get(arr16, i) == i);
212         }
213
214         /* Test set() and pushBack() with reserve(). */
215         arr = dePoolIntArray_create(pool);
216         dePoolIntArray_setSize(arr, 1500);
217         dePoolIntArray_reserve(arr, 2000);
218         for (i = 0; i < 1500; i++)
219                 dePoolIntArray_set(arr, i, i);
220         for (; i < 5000; i++)
221                 dePoolIntArray_pushBack(arr, i);
222
223         DE_TEST_ASSERT(dePoolIntArray_getNumElements(arr) == 5000);
224         for (i = 0; i < 5000; i++)
225         {
226                 int val = dePoolIntArray_get(arr, i);
227                 DE_TEST_ASSERT(val == i);
228         }
229
230         deMemPool_destroy(pool);
231 }