Sun, 22 Dec 2024 22:10:04 +0100
don't trust that size_t always has word width
it should be the case on all platforms supported by UCX, but it's not strictly defined in POSIX that it must be the case
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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #include "cx/allocator.h" |
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30 | |
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31 | #include <errno.h> |
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32 | |
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33 | __attribute__((__malloc__, __alloc_size__(2))) |
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34 | static void *cx_malloc_stdlib( |
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35 | cx_attr_unused void *d, |
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36 | size_t n |
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37 | ) { |
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38 | return malloc(n); |
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39 | } |
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40 | |
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41 | __attribute__((__warn_unused_result__, __alloc_size__(3))) |
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42 | static void *cx_realloc_stdlib( |
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43 | cx_attr_unused void *d, |
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44 | void *mem, |
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45 | size_t n |
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46 | ) { |
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47 | return realloc(mem, n); |
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48 | } |
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49 | |
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50 | __attribute__((__malloc__, __alloc_size__(2, 3))) |
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51 | static void *cx_calloc_stdlib( |
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52 | cx_attr_unused void *d, |
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53 | size_t nelem, |
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54 | size_t n |
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55 | ) { |
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56 | return calloc(nelem, n); |
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57 | } |
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58 | |
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59 | __attribute__((__nonnull__)) |
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60 | static void cx_free_stdlib( |
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61 | cx_attr_unused void *d, |
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62 | void *mem |
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63 | ) { |
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64 | free(mem); |
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65 | } |
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66 | |
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67 | static cx_allocator_class cx_default_allocator_class = { |
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68 | cx_malloc_stdlib, |
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69 | cx_realloc_stdlib, |
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70 | cx_calloc_stdlib, |
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71 | cx_free_stdlib |
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72 | }; |
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73 | |
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74 | struct cx_allocator_s cx_default_allocator = { |
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75 | &cx_default_allocator_class, |
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76 | NULL |
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77 | }; |
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78 | CxAllocator *cxDefaultAllocator = &cx_default_allocator; |
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79 | |
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80 | #undef cx_reallocate |
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81 | int cx_reallocate( |
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82 | void **mem, |
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83 | size_t n |
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84 | ) { |
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85 | void *nmem = realloc(*mem, n); |
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86 | if (nmem == NULL) { |
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87 | return 1; |
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88 | } else { |
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89 | *mem = nmem; |
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90 | return 0; |
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91 | } |
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92 | } |
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93 | |
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94 | #undef cx_reallocatearray |
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95 | int cx_reallocatearray( |
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96 | void **mem, |
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97 | size_t nmemb, |
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98 | size_t size |
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99 | ) { |
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100 | size_t n; |
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101 | if (cx_szmul(nmemb, size, &n)) { |
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102 | errno = EOVERFLOW; |
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103 | return 1; |
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104 | } else { |
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105 | void *nmem = realloc(*mem, n); |
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106 | if (nmem == NULL) { |
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107 | return 1; |
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108 | } else { |
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109 | *mem = nmem; |
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110 | return 0; |
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111 | } |
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112 | } |
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113 | } |
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114 | |
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115 | // IMPLEMENTATION OF HIGH LEVEL API |
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116 | |
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117 | void *cxMalloc( |
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118 | const CxAllocator *allocator, |
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119 | size_t n |
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120 | ) { |
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121 | return allocator->cl->malloc(allocator->data, n); |
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122 | } |
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123 | |
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124 | void *cxRealloc( |
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125 | const CxAllocator *allocator, |
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126 | void *mem, |
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127 | size_t n |
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128 | ) { |
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129 | return allocator->cl->realloc(allocator->data, mem, n); |
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130 | } |
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131 | |
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132 | void *cxReallocArray( |
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133 | const CxAllocator *allocator, |
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134 | void *mem, |
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135 | size_t nmemb, |
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136 | size_t size |
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137 | ) { |
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138 | size_t n; |
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139 | if (cx_szmul(nmemb, size, &n)) { |
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140 | errno = EOVERFLOW; |
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141 | return NULL; |
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142 | } else { |
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143 | return allocator->cl->realloc(allocator->data, mem, n); |
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144 | } |
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145 | } |
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146 | |
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147 | #undef cxReallocate |
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148 | int cxReallocate( |
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149 | const CxAllocator *allocator, |
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150 | void **mem, |
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151 | size_t n |
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152 | ) { |
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153 | void *nmem = allocator->cl->realloc(allocator->data, *mem, n); |
414 | 154 | if (nmem == NULL) { |
155 | return 1; | |
156 | } else { | |
157 | *mem = nmem; | |
158 | return 0; | |
159 | } | |
160 | } | |
161 | ||
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162 | #undef cxReallocateArray |
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163 | int cxReallocateArray( |
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164 | const CxAllocator *allocator, |
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165 | void **mem, |
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166 | size_t nmemb, |
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167 | size_t size |
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168 | ) { |
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169 | void *nmem = cxReallocArray(allocator, *mem, nmemb, size); |
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170 | if (nmem == NULL) { |
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171 | return 1; |
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172 | } else { |
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173 | *mem = nmem; |
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174 | return 0; |
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175 | } |
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176 | } |
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177 | |
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178 | void *cxCalloc( |
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179 | const CxAllocator *allocator, |
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180 | size_t nelem, |
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181 | size_t n |
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182 | ) { |
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183 | return allocator->cl->calloc(allocator->data, nelem, n); |
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184 | } |
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185 | |
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186 | void cxFree( |
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187 | const CxAllocator *allocator, |
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188 | void *mem |
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189 | ) { |
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190 | allocator->cl->free(allocator->data, mem); |
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191 | } |