1 | //memmgr.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2013 |
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5 | * |
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6 | * This file is part of libroar a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroar is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | * NOTE for everyone want's to change something and send patches: |
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25 | * read README and HACKING! There a addition information on |
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26 | * the license of this document you need to read before you send |
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27 | * any patches. |
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28 | * |
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29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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30 | * or libpulse*: |
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31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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32 | * and are therefore GPL. Because of this it may be illigal to use |
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33 | * them with any software that uses libesd, libartsc or libpulse*. |
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34 | */ |
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35 | |
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36 | #include "libroar.h" |
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37 | |
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38 | #ifdef ROAR_USE_MEMMGR |
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39 | #define NULL_BUFFER_CONST "RoarAudio" |
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40 | static char _libroar_null_buffer[] = NULL_BUFFER_CONST; // A byte sequense >= 8 byte. |
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41 | |
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42 | static inline void _libroar_null_buffer_check(void) { |
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43 | if ( memcmp(_libroar_null_buffer, NULL_BUFFER_CONST, sizeof(_libroar_null_buffer)) != 0 ) |
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44 | roar_panic(ROAR_FATAL_ERROR_MEMORY_CORRUPTION_GUARD, NULL); |
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45 | memcpy(_libroar_null_buffer, NULL_BUFFER_CONST, sizeof(_libroar_null_buffer)); |
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46 | } |
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47 | #endif |
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48 | |
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49 | #define _err(x) do { roar_err_set((x)); return NULL; } while (0) |
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50 | |
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51 | #ifdef ROAR_HAVE_CALLOC |
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52 | static void * __libroar_calloc (void * userdata, size_t nmemb, size_t size) { |
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53 | void * ret; |
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54 | roar_err_clear_all(); |
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55 | ret = calloc(nmemb, size); |
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56 | roar_err_update(); |
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57 | return ret; |
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58 | } |
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59 | #endif |
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60 | #ifdef ROAR_HAVE_MALLOC |
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61 | static void * __libroar_malloc (void * userdata, size_t size) { |
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62 | void * ret; |
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63 | roar_err_clear_all(); |
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64 | ret = malloc(size); |
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65 | roar_err_update(); |
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66 | return ret; |
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67 | } |
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68 | #endif |
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69 | #ifdef ROAR_HAVE_FREE |
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70 | static int __libroar_free (void * userdata, void * ptr) { |
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71 | free(ptr); |
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72 | return 0; |
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73 | } |
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74 | #endif |
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75 | #ifdef ROAR_HAVE_REALLOC |
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76 | static void * __libroar_realloc (void * userdata, void * ptr, size_t size) { |
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77 | void * ret; |
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78 | roar_err_clear_all(); |
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79 | ret = realloc(ptr, size); |
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80 | roar_err_update(); |
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81 | return ret; |
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82 | } |
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83 | #endif |
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84 | |
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85 | static const struct roar_libroar_memmgrapi __memory_default_api = { |
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86 | #ifdef ROAR_HAVE_CALLOC |
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87 | .calloc = __libroar_calloc, |
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88 | #else |
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89 | .calloc = NULL, |
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90 | #endif |
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91 | #ifdef ROAR_HAVE_MALLOC |
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92 | .malloc = __libroar_malloc, |
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93 | #else |
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94 | .malloc = NULL, |
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95 | #endif |
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96 | #ifdef ROAR_HAVE_FREE |
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97 | .free = __libroar_free, |
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98 | #else |
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99 | .free = NULL, |
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100 | #endif |
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101 | #ifdef ROAR_HAVE_REALLOC |
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102 | .realloc = __libroar_realloc, |
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103 | #else |
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104 | .realloc = NULL, |
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105 | #endif |
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106 | .reset = NULL, // not needed |
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107 | .sizeofbuf = NULL, // not supported |
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108 | |
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109 | // Not yet supported: |
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110 | .mlock = NULL, |
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111 | .munlock = NULL, |
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112 | .mlockall = NULL, |
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113 | .munlockall = NULL, |
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114 | |
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115 | // no need with C API. |
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116 | .userdata = NULL |
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117 | }; |
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118 | |
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119 | static const struct roar_libroar_memmgrapi * memory_api = &__memory_default_api; |
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120 | |
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121 | int roar_libroar_set_memmgrapi(const struct roar_libroar_memmgrapi * api) { |
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122 | if ( api == NULL ) |
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123 | memory_api = &__memory_default_api; |
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124 | memory_api = api; |
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125 | return 0; |
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126 | } |
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127 | |
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128 | #ifdef ROAR_USE_MEMMGR |
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129 | int roar_mm_reset(void) { |
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130 | // currently this does nothing. |
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131 | // we need to free pools and such here later. |
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132 | |
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133 | if ( memory_api->reset != NULL ) |
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134 | return memory_api->reset(memory_api->userdata); |
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135 | return 0; |
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136 | } |
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137 | |
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138 | ssize_t roar_mm_sizeof(void * buf) { |
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139 | if ( buf == NULL ) { |
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140 | roar_err_set(ROAR_ERROR_FAULT); |
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141 | return -1; |
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142 | } |
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143 | |
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144 | if ( buf == _libroar_null_buffer_check ) |
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145 | return 0; |
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146 | |
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147 | if ( memory_api->sizeofbuf != NULL ) |
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148 | return memory_api->sizeofbuf(memory_api->userdata, buf); |
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149 | |
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150 | roar_err_set(ROAR_ERROR_NOTSUP); |
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151 | return -1; |
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152 | } |
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153 | |
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154 | void * roar_mm_calloc(size_t nmemb, size_t size) { |
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155 | void * ret; |
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156 | |
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157 | if ( nmemb == 0 || size == 0 ) { |
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158 | _libroar_null_buffer_check(); |
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159 | return _libroar_null_buffer; |
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160 | } |
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161 | |
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162 | if ( memory_api->calloc != NULL ) { |
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163 | return memory_api->calloc(memory_api->userdata, nmemb, size); |
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164 | } else { |
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165 | ret = roar_mm_malloc(nmemb*size); |
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166 | if ( ret == NULL ) |
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167 | return NULL; |
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168 | |
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169 | memset(ret, 0, nmemb*size); |
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170 | |
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171 | return ret; |
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172 | } |
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173 | } |
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174 | |
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175 | void * roar_mm_malloc(size_t size) { |
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176 | if ( size == 0 ) { |
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177 | _libroar_null_buffer_check(); |
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178 | return _libroar_null_buffer; |
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179 | } |
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180 | |
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181 | if ( memory_api->malloc != NULL ) { |
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182 | return memory_api->malloc(memory_api->userdata, size); |
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183 | } else if ( memory_api->calloc != NULL ) { |
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184 | return roar_mm_calloc(1, size); |
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185 | } else if ( memory_api->realloc != NULL ) { |
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186 | return roar_mm_realloc(NULL, size); |
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187 | } else { |
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188 | _err(ROAR_ERROR_NOSYS); |
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189 | } |
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190 | } |
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191 | |
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192 | int roar_mm_free(void *ptr) { |
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193 | |
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194 | if ( ptr == _libroar_null_buffer ) { |
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195 | _libroar_null_buffer_check(); |
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196 | return 0; |
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197 | } |
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198 | |
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199 | if ( memory_api->free != NULL ) { |
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200 | return memory_api->free(memory_api->userdata, ptr); |
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201 | } else if ( memory_api->realloc != NULL ) { |
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202 | if ( roar_mm_realloc(ptr, 0) != _libroar_null_buffer ) |
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203 | return -1; |
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204 | return 0; |
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205 | } else { |
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206 | roar_err_set(ROAR_ERROR_NOSYS); |
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207 | return -1; |
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208 | } |
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209 | } |
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210 | |
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211 | void * roar_mm_realloc(void *ptr, size_t size) { |
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212 | void * ret; |
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213 | ssize_t len; |
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214 | |
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215 | if ( ptr == NULL ) |
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216 | return roar_mm_malloc(size); |
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217 | |
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218 | if ( size == 0 ) { |
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219 | roar_mm_free(ptr); |
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220 | _libroar_null_buffer_check(); |
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221 | return _libroar_null_buffer; |
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222 | } |
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223 | |
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224 | if ( memory_api->realloc != NULL ) { |
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225 | return memory_api->realloc(memory_api->userdata, ptr, size); |
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226 | } else { |
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227 | len = roar_mm_sizeof(ptr); |
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228 | if ( len == -1 ) |
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229 | return NULL; |
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230 | |
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231 | ret = roar_mm_malloc(size); |
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232 | if ( ret == NULL ) |
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233 | return NULL; |
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234 | |
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235 | memcpy(ret, ptr, len > (ssize_t)size ? size : len); |
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236 | |
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237 | return ret; |
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238 | } |
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239 | } |
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240 | #endif |
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241 | |
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242 | void * roar_mm_memdup(const void * s, size_t len) { |
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243 | void * ret; |
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244 | |
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245 | if ( s == NULL ) |
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246 | _err(ROAR_ERROR_FAULT); |
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247 | |
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248 | #ifdef ROAR_USE_MEMMGR |
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249 | if ( len == 0 ) { |
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250 | _libroar_null_buffer_check(); |
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251 | return _libroar_null_buffer; |
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252 | } |
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253 | #endif |
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254 | |
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255 | ret = roar_mm_malloc(len); |
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256 | |
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257 | if ( ret == NULL ) |
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258 | return NULL; |
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259 | |
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260 | memcpy(ret, s, len); |
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261 | |
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262 | return ret; |
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263 | } |
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264 | |
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265 | void roar_mm_free_retvoid(void *ptr) { |
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266 | roar_mm_free(ptr); |
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267 | } |
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268 | |
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269 | void roar_mm_free_noerror(void *ptr) { |
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270 | struct roar_error_state state; |
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271 | |
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272 | if ( ptr == NULL ) |
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273 | return; |
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274 | |
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275 | roar_err_store(&state); |
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276 | roar_mm_free(ptr); |
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277 | roar_err_restore(&state); |
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278 | } |
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279 | |
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280 | #if defined(ROAR_USE_MEMMGR) || !defined(ROAR_HAVE_STRDUP) |
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281 | char * roar_mm_strdup(const char *s) { |
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282 | void * ret; |
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283 | #ifndef ROAR_HAVE_STRDUP |
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284 | ssize_t len; |
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285 | #endif |
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286 | |
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287 | if ( s == NULL ) |
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288 | _err(ROAR_ERROR_FAULT); |
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289 | |
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290 | #ifdef ROAR_HAVE_STRDUP |
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291 | roar_err_clear_all(); |
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292 | ret = strdup(s); |
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293 | |
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294 | if ( ret == NULL ) |
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295 | roar_err_update(); |
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296 | #else |
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297 | len = roar_mm_strlen(s); |
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298 | if ( len == -1 ) |
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299 | return NULL; |
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300 | |
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301 | ret = roar_mm_memdup(s, len+1); |
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302 | #endif |
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303 | |
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304 | return ret; |
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305 | } |
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306 | #endif |
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307 | |
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308 | #if defined(ROAR_USE_MEMMGR) || !defined(ROAR_HAVE_STRNDUP) |
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309 | char *roar_mm_strndup(const char *s, size_t n) { |
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310 | void * ret; |
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311 | #ifndef ROAR_HAVE_STRNDUP |
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312 | ssize_t len; |
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313 | #endif |
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314 | |
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315 | if ( s == NULL ) |
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316 | _err(ROAR_ERROR_FAULT); |
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317 | |
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318 | #ifdef ROAR_USE_MEMMGR |
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319 | if ( n == 0 ) { |
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320 | _libroar_null_buffer_check(); |
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321 | return _libroar_null_buffer; |
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322 | } |
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323 | #endif |
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324 | |
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325 | #ifdef ROAR_HAVE_STRNDUP |
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326 | roar_err_clear_all(); |
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327 | ret = strndup(s, n); |
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328 | |
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329 | if ( ret == NULL ) |
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330 | roar_err_update(); |
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331 | #else |
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332 | len = roar_mm_strnlen(s, n); |
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333 | if ( len == -1 ) |
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334 | return NULL; |
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335 | |
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336 | ret = roar_mm_memdup(s, len+1); |
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337 | #endif |
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338 | |
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339 | return ret; |
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340 | } |
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341 | #endif |
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342 | |
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343 | char * roar_mm_strdup2(const char *s, const char *def) { |
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344 | if ( s == NULL ) |
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345 | s = def; |
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346 | if ( s == NULL ) { |
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347 | roar_err_clear(); |
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348 | return NULL; |
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349 | } |
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350 | |
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351 | return roar_mm_strdup(s); |
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352 | } |
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353 | |
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354 | #ifndef ROAR_HAVE_STRLEN |
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355 | ssize_t roar_mm_strlen(const char *s) { |
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356 | size_t ret = 0; |
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357 | |
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358 | if ( s == NULL ) { |
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359 | roar_err_set(ROAR_ERROR_FAULT); |
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360 | return -1; |
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361 | } |
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362 | |
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363 | for (; *s != 0; s++, ret++); |
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364 | |
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365 | return ret; |
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366 | } |
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367 | #endif |
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368 | |
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369 | ssize_t roar_mm_strnlen(const char *s, size_t maxlen) { |
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370 | size_t ret = 0; |
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371 | |
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372 | if ( s == NULL ) { |
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373 | roar_err_set(ROAR_ERROR_FAULT); |
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374 | return -1; |
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375 | } |
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376 | |
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377 | #ifdef ROAR_HAVE_STRNLEN |
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378 | ret = strnlen(s, maxlen); |
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379 | #else |
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380 | for (; ret < maxlen && *s != 0; s++, ret++); |
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381 | #endif |
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382 | |
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383 | if ( ret == maxlen ) { |
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384 | roar_err_set(ROAR_ERROR_MSGSIZE); |
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385 | return -1; |
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386 | } |
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387 | |
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388 | return ret; |
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389 | } |
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390 | |
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391 | |
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392 | #ifndef ROAR_HAVE_STRLCPY |
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393 | ssize_t roar_mm_strlcpy(char *dst, const char *src, size_t size) { |
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394 | ssize_t len; |
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395 | |
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396 | if ( dst == NULL || src == NULL ) { |
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397 | roar_err_set(ROAR_ERROR_FAULT); |
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398 | return -1; |
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399 | } |
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400 | |
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401 | if ( size == 0 ) |
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402 | return 0; |
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403 | |
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404 | len = roar_mm_strlen(src); |
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405 | if ( len == -1 ) |
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406 | return -1; |
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407 | |
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408 | if ( len < (ssize_t)size ) { |
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409 | memcpy(dst, src, len); |
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410 | dst[len] = 0; |
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411 | } else { |
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412 | memcpy(dst, src, size - 1); |
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413 | dst[size-1] = 0; |
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414 | } |
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415 | |
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416 | return len; |
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417 | } |
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418 | #endif |
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419 | |
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420 | #ifndef ROAR_HAVE_STRLCAT |
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421 | ssize_t roar_mm_strlcat(char *dst, const char *src, size_t size) { |
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422 | ssize_t slen; |
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423 | ssize_t dlen; |
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424 | int err; |
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425 | |
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426 | if ( dst == NULL || src == NULL ) { |
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427 | roar_err_set(ROAR_ERROR_FAULT); |
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428 | return -1; |
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429 | } |
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430 | |
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431 | if ( size == 0 ) |
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432 | return 0; |
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433 | |
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434 | slen = roar_mm_strlen(src); |
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435 | if ( slen == -1 ) |
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436 | return -1; |
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437 | |
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438 | dlen = roar_mm_strnlen(dst, size); |
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439 | err = roar_error; |
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440 | if ( dlen == -1 && err == ROAR_ERROR_MSGSIZE ) |
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441 | dlen = size; |
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442 | |
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443 | if ( dlen == -1 ) |
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444 | return -1; |
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445 | |
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446 | if ( (dlen + slen) < (ssize_t)size ) { |
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447 | memcpy(dst+dlen, src, slen); |
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448 | dst[dlen+slen] = 0; |
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449 | } else if ( dlen != (ssize_t)size ) { |
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450 | memcpy(dst+dlen, src, size-dlen-1); |
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451 | dst[size-1] = 0; |
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452 | } |
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453 | |
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454 | return dlen+slen; |
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455 | } |
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456 | #endif |
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457 | |
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458 | #ifndef ROAR_HAVE_STRTOK_R |
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459 | char * roar_mm_strtok_r(char *str, const char *delim, char **saveptr) { |
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460 | char * next; |
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461 | |
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462 | if ( delim == NULL || saveptr == NULL ) { |
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463 | roar_err_set(ROAR_ERROR_FAULT); |
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464 | return NULL; |
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465 | } |
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466 | |
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467 | if ( delim[0] == 0 ) { |
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468 | roar_err_set(ROAR_ERROR_NOTSUP); |
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469 | return NULL; |
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470 | } |
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471 | |
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472 | if ( delim[1] != 0 ) { |
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473 | roar_err_set(ROAR_ERROR_NOTSUP); |
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474 | return NULL; |
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475 | } |
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476 | |
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477 | if ( str != NULL ) { |
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478 | next = str; |
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479 | } else { |
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480 | next = *saveptr; |
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481 | } |
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482 | |
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483 | if ( next == NULL ) { |
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484 | roar_err_set(ROAR_ERROR_NODATA); |
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485 | return NULL; |
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486 | } |
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487 | |
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488 | *saveptr = strstr(next, delim); |
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489 | |
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490 | if ( *saveptr != NULL ) { |
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491 | **saveptr = 0; |
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492 | (*saveptr)++; |
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493 | } |
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494 | |
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495 | return next; |
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496 | } |
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497 | #endif |
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498 | |
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499 | int roar_mm_strselcmp(const char *s1, const char *s2) { |
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500 | register char a, b; |
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501 | |
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502 | if ( s1 == s2 ) |
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503 | return 0; |
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504 | |
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505 | if ( s1 == NULL || s2 == NULL ) |
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506 | return -1; |
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507 | |
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508 | for (; ; s1++, s2++) { |
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509 | a = *s1; |
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510 | b = *s2; |
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511 | |
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512 | if ( a == '*' ) { |
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513 | s1++; |
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514 | a = *s1; |
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515 | if ( a == 0 ) { |
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516 | if ( b == 0 ) { |
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517 | return 1; // no match! ('*' does not mach no-chars) |
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518 | } else { |
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519 | return 0; // match! (string ends with '*' and something not EOS is in b) |
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520 | } |
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521 | } else { |
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522 | for (; *s2 != 0 && *s2 != a; s2++); |
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523 | if ( a != *s2 ) |
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524 | return 1; // no match! (did not find correct char) |
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525 | } |
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526 | } else if ( a == 0 || b == 0 ) { |
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527 | if ( a == b ) { |
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528 | return 0; // match! |
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529 | } else { |
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530 | return 1; // no match! (dffrent length) |
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531 | } |
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532 | } else if ( a != b ) { |
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533 | return 1; // no match! (diffrent chars) |
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534 | } |
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535 | } |
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536 | |
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537 | return -1; |
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538 | } |
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539 | |
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540 | ssize_t roar_mm_strseltok(const char *s1, char *s2, char ** tok, size_t toks) { |
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541 | register char a, b; |
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542 | size_t idx = 0; |
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543 | |
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544 | if ( s1 == NULL || s2 == NULL ) |
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545 | return -1; |
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546 | |
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547 | for (; ; s1++, s2++) { |
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548 | a = *s1; |
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549 | b = *s2; |
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550 | |
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551 | if ( a == 0 || b == 0 ) { |
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552 | if ( a == b ) { |
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553 | return idx; |
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554 | } else { |
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555 | return -1; |
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556 | } |
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557 | } else if ( a == '*' ) { |
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558 | s1++; |
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559 | a = *s1; |
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560 | if ( idx == toks ) |
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561 | return -1; |
---|
562 | |
---|
563 | tok[idx] = s2; |
---|
564 | idx++; |
---|
565 | |
---|
566 | for (; *s2 != 0 && *s2 != a; s2++); |
---|
567 | |
---|
568 | if ( a == 0 ) |
---|
569 | return idx; |
---|
570 | |
---|
571 | if ( *s1 == 0 ) |
---|
572 | return -1; |
---|
573 | |
---|
574 | *s2 = 0; |
---|
575 | } |
---|
576 | } |
---|
577 | |
---|
578 | return -1; |
---|
579 | } |
---|
580 | |
---|
581 | //ll |
---|