Fri, 11 Dec 2020 11:47:30 +0100
refactor widget groups
0 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
157 | 4 | * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved. |
0 | 5 | * |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
28 | ||
157 | 29 | #include "ucx/mempool.h" |
30 | ||
0 | 31 | #include <stdlib.h> |
32 | #include <string.h> | |
33 | #include <stdio.h> | |
34 | #ifdef __cplusplus | |
35 | #define __STDC_FORMAT_MACROS | |
36 | #endif | |
37 | #include <inttypes.h> | |
38 | ||
39 | /** Capsule for destructible memory chunks. */ | |
40 | typedef struct { | |
41 | /** The destructor for the memory chunk. */ | |
42 | ucx_destructor destructor; | |
43 | /** | |
44 | * First byte of the memory chunk. | |
45 | * Note, that the address <code>&c</code> is also the address | |
46 | * of the whole memory chunk. | |
47 | */ | |
48 | char c; | |
49 | } ucx_memchunk; | |
50 | ||
51 | /** Capsule for data and its destructor. */ | |
52 | typedef struct { | |
53 | /** The destructor for the data. */ | |
54 | ucx_destructor destructor; | |
55 | /** A pointer to the data. */ | |
56 | void *ptr; | |
57 | } ucx_regdestr; | |
58 | ||
157 | 59 | #ifdef __cplusplus |
60 | extern "C" | |
61 | #endif | |
62 | void ucx_mempool_shared_destr(void* ptr) { | |
0 | 63 | ucx_regdestr *rd = (ucx_regdestr*)ptr; |
64 | rd->destructor(rd->ptr); | |
65 | } | |
66 | ||
67 | UcxMempool *ucx_mempool_new(size_t n) { | |
157 | 68 | size_t poolsz; |
69 | if(ucx_szmul(n, sizeof(void*), &poolsz)) { | |
70 | return NULL; | |
71 | } | |
72 | ||
0 | 73 | UcxMempool *pool = (UcxMempool*)malloc(sizeof(UcxMempool)); |
74 | if (!pool) { | |
75 | return NULL; | |
76 | } | |
77 | ||
157 | 78 | pool->data = (void**) malloc(poolsz); |
0 | 79 | if (pool->data == NULL) { |
80 | free(pool); | |
81 | return NULL; | |
82 | } | |
83 | ||
84 | pool->ndata = 0; | |
85 | pool->size = n; | |
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86 | |
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87 | UcxAllocator *allocator = (UcxAllocator*)malloc(sizeof(UcxAllocator)); |
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88 | if(!allocator) { |
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89 | free(pool->data); |
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90 | free(pool); |
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91 | return NULL; |
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92 | } |
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93 | allocator->malloc = (ucx_allocator_malloc)ucx_mempool_malloc; |
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94 | allocator->calloc = (ucx_allocator_calloc)ucx_mempool_calloc; |
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95 | allocator->realloc = (ucx_allocator_realloc)ucx_mempool_realloc; |
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96 | allocator->free = (ucx_allocator_free)ucx_mempool_free; |
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97 | allocator->pool = pool; |
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98 | pool->allocator = allocator; |
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99 | |
0 | 100 | return pool; |
101 | } | |
102 | ||
103 | int ucx_mempool_chcap(UcxMempool *pool, size_t newcap) { | |
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104 | if (newcap < pool->ndata) { |
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105 | return 1; |
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106 | } |
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107 | |
157 | 108 | size_t newcapsz; |
109 | if(ucx_szmul(newcap, sizeof(void*), &newcapsz)) { | |
110 | return 1; | |
111 | } | |
112 | ||
113 | void **data = (void**) realloc(pool->data, newcapsz); | |
0 | 114 | if (data) { |
115 | pool->data = data; | |
116 | pool->size = newcap; | |
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117 | return 0; |
0 | 118 | } else { |
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119 | return 1; |
0 | 120 | } |
121 | } | |
122 | ||
123 | void *ucx_mempool_malloc(UcxMempool *pool, size_t n) { | |
157 | 124 | if(((size_t)-1) - sizeof(ucx_destructor) < n) { |
125 | return NULL; | |
126 | } | |
127 | ||
0 | 128 | if (pool->ndata >= pool->size) { |
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129 | size_t newcap = pool->size*2; |
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130 | if (newcap < pool->size || ucx_mempool_chcap(pool, newcap)) { |
0 | 131 | return NULL; |
132 | } | |
133 | } | |
134 | ||
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135 | void *p = malloc(sizeof(ucx_destructor) + n); |
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136 | ucx_memchunk *mem = (ucx_memchunk*)p; |
0 | 137 | if (!mem) { |
138 | return NULL; | |
139 | } | |
140 | ||
141 | mem->destructor = NULL; | |
142 | pool->data[pool->ndata] = mem; | |
143 | pool->ndata++; | |
144 | ||
145 | return &(mem->c); | |
146 | } | |
147 | ||
148 | void *ucx_mempool_calloc(UcxMempool *pool, size_t nelem, size_t elsize) { | |
157 | 149 | size_t msz; |
150 | if(ucx_szmul(nelem, elsize, &msz)) { | |
151 | return NULL; | |
152 | } | |
153 | ||
154 | void *ptr = ucx_mempool_malloc(pool, msz); | |
0 | 155 | if (!ptr) { |
156 | return NULL; | |
157 | } | |
158 | memset(ptr, 0, nelem * elsize); | |
159 | return ptr; | |
160 | } | |
161 | ||
162 | void *ucx_mempool_realloc(UcxMempool *pool, void *ptr, size_t n) { | |
157 | 163 | if(((size_t)-1) - sizeof(ucx_destructor) < n) { |
164 | return NULL; | |
165 | } | |
166 | ||
0 | 167 | char *mem = ((char*)ptr) - sizeof(ucx_destructor); |
168 | char *newm = (char*) realloc(mem, n + sizeof(ucx_destructor)); | |
169 | if (!newm) { | |
170 | return NULL; | |
171 | } | |
172 | if (mem != newm) { | |
173 | for(size_t i=0 ; i < pool->ndata ; i++) { | |
174 | if(pool->data[i] == mem) { | |
175 | pool->data[i] = newm; | |
176 | return newm + sizeof(ucx_destructor); | |
177 | } | |
178 | } | |
179 | fprintf(stderr, "FATAL: 0x%08" PRIxPTR" not in mpool 0x%08" PRIxPTR"\n", | |
180 | (intptr_t)ptr, (intptr_t)pool); | |
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181 | abort(); |
0 | 182 | } else { |
183 | return newm + sizeof(ucx_destructor); | |
184 | } | |
185 | } | |
186 | ||
187 | void ucx_mempool_free(UcxMempool *pool, void *ptr) { | |
188 | ucx_memchunk *chunk = (ucx_memchunk*)((char*)ptr-sizeof(ucx_destructor)); | |
189 | for(size_t i=0 ; i<pool->ndata ; i++) { | |
190 | if(chunk == pool->data[i]) { | |
191 | if(chunk->destructor != NULL) { | |
192 | chunk->destructor(&(chunk->c)); | |
193 | } | |
194 | free(chunk); | |
195 | size_t last_index = pool->ndata - 1; | |
196 | if(i != last_index) { | |
197 | pool->data[i] = pool->data[last_index]; | |
198 | pool->data[last_index] = NULL; | |
199 | } | |
200 | pool->ndata--; | |
201 | return; | |
202 | } | |
203 | } | |
204 | fprintf(stderr, "FATAL: 0x%08" PRIxPTR" not in mpool 0x%08" PRIxPTR"\n", | |
205 | (intptr_t)ptr, (intptr_t)pool); | |
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206 | abort(); |
0 | 207 | } |
208 | ||
209 | void ucx_mempool_destroy(UcxMempool *pool) { | |
210 | ucx_memchunk *chunk; | |
211 | for(size_t i=0 ; i<pool->ndata ; i++) { | |
212 | chunk = (ucx_memchunk*) pool->data[i]; | |
213 | if(chunk) { | |
214 | if(chunk->destructor) { | |
215 | chunk->destructor(&(chunk->c)); | |
216 | } | |
217 | free(chunk); | |
218 | } | |
219 | } | |
220 | free(pool->data); | |
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221 | free(pool->allocator); |
0 | 222 | free(pool); |
223 | } | |
224 | ||
225 | void ucx_mempool_set_destr(void *ptr, ucx_destructor func) { | |
226 | *(ucx_destructor*)((char*)ptr-sizeof(ucx_destructor)) = func; | |
227 | } | |
228 | ||
229 | void ucx_mempool_reg_destr(UcxMempool *pool, void *ptr, ucx_destructor destr) { | |
230 | ucx_regdestr *rd = (ucx_regdestr*)ucx_mempool_malloc( | |
231 | pool, | |
232 | sizeof(ucx_regdestr)); | |
233 | rd->destructor = destr; | |
234 | rd->ptr = ptr; | |
235 | ucx_mempool_set_destr(rd, ucx_mempool_shared_destr); | |
236 | } | |
237 |