1 | #include <mruby.h>
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2 | #include <mruby/gc.h>
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3 | #include <mruby/hash.h>
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4 | #include <mruby/class.h>
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5 |
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6 | struct os_count_struct {
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7 | mrb_int total;
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8 | mrb_int freed;
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9 | mrb_int counts[MRB_TT_MAXDEFINE+1];
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10 | };
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11 |
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12 | static int
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13 | os_count_object_type(mrb_state *mrb, struct RBasic *obj, void *data)
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14 | {
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15 | struct os_count_struct *obj_count;
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16 | obj_count = (struct os_count_struct*)data;
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17 |
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18 | obj_count->total++;
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19 |
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20 | if (mrb_object_dead_p(mrb, obj)) {
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21 | obj_count->freed++;
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22 | }
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23 | else {
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24 | obj_count->counts[obj->tt]++;
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25 | }
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26 | return MRB_EACH_OBJ_OK;
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27 | }
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28 |
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29 | /*
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30 | * call-seq:
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31 | * ObjectSpace.count_objects([result_hash]) -> hash
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32 | *
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33 | * Counts objects for each type.
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34 | *
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35 | * It returns a hash, such as:
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36 | * {
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37 | * :TOTAL=>10000,
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38 | * :FREE=>3011,
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39 | * :T_OBJECT=>6,
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40 | * :T_CLASS=>404,
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41 | * # ...
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42 | * }
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43 | *
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44 | * If the optional argument +result_hash+ is given,
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45 | * it is overwritten and returned. This is intended to avoid probe effect.
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46 | *
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47 | */
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48 |
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49 | static mrb_value
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50 | os_count_objects(mrb_state *mrb, mrb_value self)
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51 | {
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52 | struct os_count_struct obj_count = { 0 };
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53 | mrb_int i;
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54 | mrb_value hash;
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55 |
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56 | if (mrb_get_args(mrb, "|H", &hash) == 0) {
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57 | hash = mrb_hash_new(mrb);
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58 | }
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59 |
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60 | if (!mrb_test(mrb_hash_empty_p(mrb, hash))) {
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61 | mrb_hash_clear(mrb, hash);
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62 | }
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63 |
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64 | mrb_objspace_each_objects(mrb, os_count_object_type, &obj_count);
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65 |
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66 | mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "TOTAL")), mrb_fixnum_value(obj_count.total));
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67 | mrb_hash_set(mrb, hash, mrb_symbol_value(mrb_intern_lit(mrb, "FREE")), mrb_fixnum_value(obj_count.freed));
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68 |
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69 | for (i = MRB_TT_FALSE; i < MRB_TT_MAXDEFINE; i++) {
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70 | mrb_value type;
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71 | switch (i) {
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72 | #define COUNT_TYPE(t) case (MRB_T ## t): type = mrb_symbol_value(mrb_intern_lit(mrb, #t)); break;
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73 | COUNT_TYPE(T_FALSE);
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74 | COUNT_TYPE(T_FREE);
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75 | COUNT_TYPE(T_TRUE);
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76 | COUNT_TYPE(T_FIXNUM);
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77 | COUNT_TYPE(T_SYMBOL);
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78 | COUNT_TYPE(T_UNDEF);
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79 | COUNT_TYPE(T_FLOAT);
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80 | COUNT_TYPE(T_CPTR);
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81 | COUNT_TYPE(T_OBJECT);
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82 | COUNT_TYPE(T_CLASS);
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83 | COUNT_TYPE(T_MODULE);
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84 | COUNT_TYPE(T_ICLASS);
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85 | COUNT_TYPE(T_SCLASS);
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86 | COUNT_TYPE(T_PROC);
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87 | COUNT_TYPE(T_ARRAY);
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88 | COUNT_TYPE(T_HASH);
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89 | COUNT_TYPE(T_STRING);
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90 | COUNT_TYPE(T_RANGE);
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91 | COUNT_TYPE(T_EXCEPTION);
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92 | COUNT_TYPE(T_FILE);
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93 | COUNT_TYPE(T_ENV);
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94 | COUNT_TYPE(T_DATA);
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95 | COUNT_TYPE(T_FIBER);
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96 | #undef COUNT_TYPE
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97 | default:
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98 | type = mrb_fixnum_value(i); break;
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99 | }
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100 | if (obj_count.counts[i])
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101 | mrb_hash_set(mrb, hash, type, mrb_fixnum_value(obj_count.counts[i]));
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102 | }
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103 |
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104 | return hash;
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105 | }
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106 |
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107 | struct os_each_object_data {
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108 | mrb_value block;
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109 | struct RClass *target_module;
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110 | mrb_int count;
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111 | };
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112 |
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113 | static int
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114 | os_each_object_cb(mrb_state *mrb, struct RBasic *obj, void *ud)
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115 | {
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116 | struct os_each_object_data *d = (struct os_each_object_data*)ud;
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117 |
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118 | /* filter dead objects */
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119 | if (mrb_object_dead_p(mrb, obj)) {
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120 | return MRB_EACH_OBJ_OK;
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121 | }
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122 |
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123 | /* filter internal objects */
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124 | switch (obj->tt) {
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125 | case MRB_TT_ENV:
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126 | case MRB_TT_ICLASS:
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127 | return MRB_EACH_OBJ_OK;
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128 | default:
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129 | break;
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130 | }
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131 |
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132 | /* filter half baked (or internal) objects */
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133 | if (!obj->c) return MRB_EACH_OBJ_OK;
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134 |
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135 | /* filter class kind if target module defined */
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136 | if (d->target_module && !mrb_obj_is_kind_of(mrb, mrb_obj_value(obj), d->target_module)) {
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137 | return MRB_EACH_OBJ_OK;
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138 | }
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139 |
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140 | mrb_yield(mrb, d->block, mrb_obj_value(obj));
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141 | ++d->count;
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142 | return MRB_EACH_OBJ_OK;
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143 | }
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144 |
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145 | /*
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146 | * call-seq:
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147 | * ObjectSpace.each_object([module]) {|obj| ... } -> fixnum
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148 | *
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149 | * Calls the block once for each object in this Ruby process.
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150 | * Returns the number of objects found.
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151 | * If the optional argument +module+ is given,
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152 | * calls the block for only those classes or modules
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153 | * that match (or are a subclass of) +module+.
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154 | *
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155 | * If no block is given, ArgumentError is raised.
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156 | *
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157 | */
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158 |
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159 | static mrb_value
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160 | os_each_object(mrb_state *mrb, mrb_value self)
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161 | {
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162 | mrb_value cls = mrb_nil_value();
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163 | struct os_each_object_data d;
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164 | mrb_get_args(mrb, "&|C", &d.block, &cls);
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165 |
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166 | if (mrb_nil_p(d.block)) {
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167 | mrb_raise(mrb, E_ARGUMENT_ERROR, "Expected block in ObjectSpace.each_object.");
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168 | }
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169 |
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170 | d.target_module = mrb_nil_p(cls) ? NULL : mrb_class_ptr(cls);
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171 | d.count = 0;
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172 | mrb_objspace_each_objects(mrb, os_each_object_cb, &d);
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173 | return mrb_fixnum_value(d.count);
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174 | }
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175 |
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176 | void
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177 | mrb_mruby_objectspace_gem_init(mrb_state *mrb)
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178 | {
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179 | struct RClass *os = mrb_define_module(mrb, "ObjectSpace");
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180 | mrb_define_class_method(mrb, os, "count_objects", os_count_objects, MRB_ARGS_OPT(1));
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181 | mrb_define_class_method(mrb, os, "each_object", os_each_object, MRB_ARGS_OPT(1));
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182 | }
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183 |
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184 | void
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185 | mrb_mruby_objectspace_gem_final(mrb_state *mrb)
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186 | {
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187 | }
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