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some function can be macros using the default allocator
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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 <stdlib.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 | __attribute__((__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 | __attribute__((__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 | __attribute__((__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 | __attribute__((__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 | /* IMPLEMENTATION OF HIGH LEVEL API */ |
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81 | |
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82 | void *cxMalloc( |
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83 | CxAllocator const *allocator, |
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84 | size_t n |
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85 | ) { |
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86 | return allocator->cl->malloc(allocator->data, n); |
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87 | } |
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88 | |
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89 | void *cxRealloc( |
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90 | CxAllocator const *allocator, |
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91 | void *mem, |
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92 | size_t n |
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93 | ) { |
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94 | return allocator->cl->realloc(allocator->data, mem, n); |
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95 | } |
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96 | |
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97 | int cxReallocate( |
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98 | CxAllocator const *allocator, |
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99 | void **mem, |
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100 | size_t n |
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101 | ) { |
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102 | void *nmem = allocator->cl->realloc(allocator->data, *mem, n); |
414 | 103 | if (nmem == NULL) { |
104 | return 1; | |
105 | } else { | |
106 | *mem = nmem; | |
107 | return 0; | |
108 | } | |
109 | } | |
110 | ||
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111 | void *cxCalloc( |
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112 | CxAllocator const *allocator, |
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113 | size_t nelem, |
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114 | size_t n |
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115 | ) { |
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116 | return allocator->cl->calloc(allocator->data, nelem, n); |
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117 | } |
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118 | |
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119 | void cxFree( |
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120 | CxAllocator const *allocator, |
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121 | void *mem |
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122 | ) { |
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123 | allocator->cl->free(allocator->data, mem); |
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124 | } |