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annotate dmd2/mem.c @ 1452:638d16625da2

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LDC 2 compiles again.
author Robert Clipsham <robert@octarineparrot.com>
date Sat, 30 May 2009 17:23:32 +0100
parents f04dde6e882c
children
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758
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1
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2 /* Copyright (c) 2000 Digital Mars */
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3 /* All Rights Reserved */
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4
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5 #include <cstdio>
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6 #include <cstdlib>
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7 #include <cstring>
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8 #include <cassert>
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9
1452
638d16625da2 LDC 2 compiles again.
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10 #include "rmem.h"
758
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12 #if USE_BOEHM_GC
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13 // I needed to perfix the dir after upgrading to gc 7.0
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14 #include "gc/gc.h"
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15 #endif
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16
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17 /* This implementation of the storage allocator uses the standard C allocation package.
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18 */
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19
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20 Mem mem;
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21
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22 #if USE_BOEHM_GC
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23
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24 static bool gc_was_init = false;
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26 void Mem::init()
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27 {
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28 GC_init();
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29 gc_was_init = true;
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30 }
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31
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32 char *Mem::strdup(const char *s)
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33 {
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34 char *p;
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35
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36 if (s)
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37 {
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38 p = GC_strdup(s);
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39 if (p)
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40 return p;
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41 error();
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42 }
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43 return NULL;
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44 }
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45
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46 void *Mem::malloc(size_t size)
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47 { void *p;
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48
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49 if (!size)
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50 p = NULL;
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51 else
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52 {
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53 p = GC_malloc(size);
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54 if (!p)
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55 error();
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56 }
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57 return p;
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58 }
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59
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60 void *Mem::calloc(size_t size, size_t n)
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61 { void *p;
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62
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63 if (!size || !n)
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64 p = NULL;
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65 else
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66 {
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67 p = GC_malloc(size * n);
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68 if (!p)
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69 error();
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70 memset(p, 0, size * n);
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71 }
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72 return p;
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73 }
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74
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75 void *Mem::realloc(void *p, size_t size)
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76 {
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77 if (!size)
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78 { if (p)
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79 { GC_free(p);
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80 p = NULL;
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81 }
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82 }
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83 else if (!p)
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84 {
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85 p = GC_malloc(size);
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86 if (!p)
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87 error();
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88 }
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89 else
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90 {
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91 p = GC_realloc(p, size);
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92 if (!p)
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93 error();
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94 }
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95 return p;
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96 }
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97
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98 void Mem::free(void *p)
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99 {
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100 if (p)
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101 GC_free(p);
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102 }
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103
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104 void *Mem::mallocdup(void *o, size_t size)
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105 { void *p;
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106
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107 if (!size)
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108 p = NULL;
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109 else
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110 {
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111 p = GC_malloc(size);
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112 if (!p)
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113 error();
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114 else
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115 memcpy(p,o,size);
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116 }
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117 return p;
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118 }
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119
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120 void Mem::error()
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121 {
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122 printf("Error: out of memory\n");
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123 exit(EXIT_FAILURE);
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124 }
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125
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126 void Mem::fullcollect()
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127 {
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128 GC_gcollect();
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129 }
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130
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131 void Mem::mark(void *pointer)
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132 {
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133 (void) pointer; // necessary for VC /W4
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134 }
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135
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136 /* =================================================== */
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137
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138 void * operator new(size_t m_size)
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139 {
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140 // without this we segfault with gc 7.0
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141 if (!gc_was_init) {
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142 mem.init();
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143 }
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144 void *p = GC_malloc(m_size);
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145 if (p)
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146 return p;
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147 printf("Error: out of memory\n");
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148 exit(EXIT_FAILURE);
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149 return p;
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150 }
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151
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152 void operator delete(void *p)
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153 {
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154 GC_free(p);
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155 }
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156
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157 #elif !USE_BOEHM_GC
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158
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159 void Mem::init()
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160 {
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161 }
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162
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163 char *Mem::strdup(const char *s)
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164 {
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165 char *p;
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166
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167 if (s)
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168 {
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169 p = ::strdup(s);
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170 if (p)
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171 return p;
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172 error();
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173 }
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174 return NULL;
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175 }
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176
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177 void *Mem::malloc(size_t size)
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178 { void *p;
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179
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180 if (!size)
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181 p = NULL;
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182 else
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183 {
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184 p = ::malloc(size);
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185 if (!p)
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186 error();
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187 }
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188 return p;
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189 }
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190
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191 void *Mem::calloc(size_t size, size_t n)
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192 { void *p;
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193
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194 if (!size || !n)
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195 p = NULL;
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196 else
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197 {
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198 p = ::malloc(size * n);
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199 if (!p)
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200 error();
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201 memset(p, 0, size * n);
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202 }
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203 return p;
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204 }
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205
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206 void *Mem::realloc(void *p, size_t size)
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207 {
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208 if (!size)
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209 { if (p)
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210 { ::free(p);
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211 p = NULL;
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212 }
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213 }
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214 else if (!p)
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215 {
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diff changeset
216 p = ::malloc(size);
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diff changeset
217 if (!p)
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diff changeset
218 error();
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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219 }
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220 else
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parents:
diff changeset
221 {
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diff changeset
222 p = ::realloc(p, size);
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223 if (!p)
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diff changeset
224 error();
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225 }
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diff changeset
226 return p;
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227 }
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
228
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diff changeset
229 void Mem::free(void *p)
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diff changeset
230 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
231 if (p)
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diff changeset
232 ::free(p);
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233 }
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diff changeset
234
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
235 void *Mem::mallocdup(void *o, size_t size)
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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236 { void *p;
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237
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diff changeset
238 if (!size)
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diff changeset
239 p = NULL;
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff changeset
240 else
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
241 {
f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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242 p = ::malloc(size);
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243 if (!p)
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244 error();
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245 else
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246 memcpy(p,o,size);
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247 }
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248 return p;
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249 }
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250
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251 void Mem::error()
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252 {
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253 printf("Error: out of memory\n");
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254 exit(EXIT_FAILURE);
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255 }
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256
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257 void Mem::fullcollect()
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258 {
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259 }
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260
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261 void Mem::mark(void *pointer)
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262 {
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263 }
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264
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265 #endif // USE_BOEHM_GC