[270] | 1 | /*
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| 2 | ** state.c - mrb_state open/close functions
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| 3 | **
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| 4 | ** See Copyright Notice in mruby.h
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| 5 | */
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| 6 |
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| 7 | #include <stdlib.h>
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| 8 | #include <string.h>
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[331] | 9 | #include <mruby.h>
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| 10 | #include <mruby/irep.h>
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| 11 | #include <mruby/variable.h>
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| 12 | #include <mruby/debug.h>
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| 13 | #include <mruby/string.h>
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[439] | 14 | #include <mruby/class.h>
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[270] | 15 |
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| 16 | void mrb_init_core(mrb_state*);
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| 17 | void mrb_init_mrbgems(mrb_state*);
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| 18 |
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| 19 | void mrb_gc_init(mrb_state*, mrb_gc *gc);
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| 20 | void mrb_gc_destroy(mrb_state*, mrb_gc *gc);
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| 21 |
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| 22 | MRB_API mrb_state*
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| 23 | mrb_open_core(mrb_allocf f, void *ud)
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| 24 | {
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| 25 | static const mrb_state mrb_state_zero = { 0 };
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| 26 | static const struct mrb_context mrb_context_zero = { 0 };
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| 27 | mrb_state *mrb;
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| 28 |
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[439] | 29 | if (f == NULL) f = mrb_default_allocf;
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[270] | 30 | mrb = (mrb_state *)(f)(NULL, NULL, sizeof(mrb_state), ud);
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| 31 | if (mrb == NULL) return NULL;
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| 32 |
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| 33 | *mrb = mrb_state_zero;
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| 34 | mrb->allocf_ud = ud;
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| 35 | mrb->allocf = f;
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| 36 | mrb->atexit_stack_len = 0;
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| 37 |
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| 38 | mrb_gc_init(mrb, &mrb->gc);
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| 39 | mrb->c = (struct mrb_context*)mrb_malloc(mrb, sizeof(struct mrb_context));
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| 40 | *mrb->c = mrb_context_zero;
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| 41 | mrb->root_c = mrb->c;
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| 42 |
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| 43 | mrb_init_core(mrb);
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| 44 |
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| 45 | return mrb;
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| 46 | }
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| 47 |
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| 48 | void*
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| 49 | mrb_default_allocf(mrb_state *mrb, void *p, size_t size, void *ud)
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| 50 | {
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| 51 | if (size == 0) {
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| 52 | free(p);
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| 53 | return NULL;
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| 54 | }
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| 55 | else {
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| 56 | return realloc(p, size);
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | MRB_API mrb_state*
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| 61 | mrb_open(void)
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| 62 | {
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[279] | 63 | mrb_state *mrb = mrb_open_allocf(mrb_default_allocf, NULL, FALSE);
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[270] | 64 |
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| 65 | return mrb;
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| 66 | }
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| 67 |
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| 68 | MRB_API mrb_state*
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[279] | 69 | mrb_open_allocf(mrb_allocf f, void *ud, mrb_bool disable_gems)
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[270] | 70 | {
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| 71 | mrb_state *mrb = mrb_open_core(f, ud);
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| 72 |
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| 73 | if (mrb == NULL) {
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| 74 | return NULL;
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| 75 | }
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| 76 |
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[279] | 77 | if (!disable_gems) {
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[439] | 78 | #ifndef DISABLE_GEMS
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[279] | 79 | mrb_init_mrbgems(mrb);
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| 80 | mrb_gc_arena_restore(mrb, 0);
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[439] | 81 | #endif
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[279] | 82 | }
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[270] | 83 | return mrb;
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| 84 | }
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| 85 |
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| 86 | void mrb_free_symtbl(mrb_state *mrb);
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| 87 |
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| 88 | void
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| 89 | mrb_irep_incref(mrb_state *mrb, mrb_irep *irep)
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| 90 | {
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| 91 | irep->refcnt++;
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| 92 | }
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| 93 |
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| 94 | void
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| 95 | mrb_irep_decref(mrb_state *mrb, mrb_irep *irep)
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| 96 | {
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| 97 | irep->refcnt--;
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| 98 | if (irep->refcnt == 0) {
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| 99 | mrb_irep_free(mrb, irep);
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| 100 | }
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| 101 | }
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| 102 |
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| 103 | void
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[439] | 104 | mrb_irep_cutref(mrb_state *mrb, mrb_irep *irep)
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| 105 | {
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| 106 | mrb_irep *tmp;
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| 107 | int i;
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| 108 |
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| 109 | for (i=0; i<irep->rlen; i++) {
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| 110 | tmp = irep->reps[i];
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| 111 | irep->reps[i] = NULL;
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| 112 | if (tmp) mrb_irep_decref(mrb, tmp);
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| 113 | }
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| 114 | }
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| 115 |
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| 116 | void
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[270] | 117 | mrb_irep_free(mrb_state *mrb, mrb_irep *irep)
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| 118 | {
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[439] | 119 | int i;
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[270] | 120 |
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| 121 | if (!(irep->flags & MRB_ISEQ_NO_FREE))
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[439] | 122 | mrb_free(mrb, (void*)irep->iseq);
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[331] | 123 | if (irep->pool) for (i=0; i<irep->plen; i++) {
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[439] | 124 | if (mrb_string_p(irep->pool[i])) {
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[270] | 125 | mrb_gc_free_str(mrb, RSTRING(irep->pool[i]));
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| 126 | mrb_free(mrb, mrb_obj_ptr(irep->pool[i]));
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| 127 | }
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[439] | 128 | #if defined(MRB_WORD_BOXING) && !defined(MRB_WITHOUT_FLOAT)
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| 129 | else if (mrb_float_p(irep->pool[i])) {
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[270] | 130 | mrb_free(mrb, mrb_obj_ptr(irep->pool[i]));
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| 131 | }
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| 132 | #endif
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| 133 | }
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| 134 | mrb_free(mrb, irep->pool);
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| 135 | mrb_free(mrb, irep->syms);
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| 136 | for (i=0; i<irep->rlen; i++) {
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[439] | 137 | if (irep->reps[i])
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| 138 | mrb_irep_decref(mrb, irep->reps[i]);
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[270] | 139 | }
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| 140 | mrb_free(mrb, irep->reps);
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| 141 | mrb_free(mrb, irep->lv);
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| 142 | mrb_debug_info_free(mrb, irep->debug_info);
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| 143 | mrb_free(mrb, irep);
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| 144 | }
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| 145 |
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[331] | 146 | void mrb_free_backtrace(mrb_state *mrb);
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| 147 |
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[270] | 148 | MRB_API void
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| 149 | mrb_free_context(mrb_state *mrb, struct mrb_context *c)
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| 150 | {
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| 151 | if (!c) return;
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| 152 | mrb_free(mrb, c->stbase);
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| 153 | mrb_free(mrb, c->cibase);
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| 154 | mrb_free(mrb, c->rescue);
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| 155 | mrb_free(mrb, c->ensure);
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| 156 | mrb_free(mrb, c);
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| 157 | }
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| 158 |
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| 159 | MRB_API void
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| 160 | mrb_close(mrb_state *mrb)
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| 161 | {
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| 162 | if (!mrb) return;
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| 163 | if (mrb->atexit_stack_len > 0) {
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| 164 | mrb_int i;
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| 165 | for (i = mrb->atexit_stack_len; i > 0; --i) {
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| 166 | mrb->atexit_stack[i - 1](mrb);
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| 167 | }
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| 168 | #ifndef MRB_FIXED_STATE_ATEXIT_STACK
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| 169 | mrb_free(mrb, mrb->atexit_stack);
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| 170 | #endif
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| 171 | }
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| 172 |
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| 173 | /* free */
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[439] | 174 | mrb_gc_destroy(mrb, &mrb->gc);
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| 175 | mrb_free_context(mrb, mrb->root_c);
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[270] | 176 | mrb_gc_free_gv(mrb);
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| 177 | mrb_free_symtbl(mrb);
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| 178 | mrb_free(mrb, mrb);
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| 179 | }
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| 180 |
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| 181 | MRB_API mrb_irep*
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| 182 | mrb_add_irep(mrb_state *mrb)
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| 183 | {
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| 184 | static const mrb_irep mrb_irep_zero = { 0 };
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| 185 | mrb_irep *irep;
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| 186 |
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| 187 | irep = (mrb_irep *)mrb_malloc(mrb, sizeof(mrb_irep));
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| 188 | *irep = mrb_irep_zero;
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| 189 | irep->refcnt = 1;
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| 190 |
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| 191 | return irep;
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| 192 | }
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| 193 |
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| 194 | MRB_API mrb_value
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| 195 | mrb_top_self(mrb_state *mrb)
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| 196 | {
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| 197 | return mrb_obj_value(mrb->top_self);
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| 198 | }
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| 199 |
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| 200 | MRB_API void
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| 201 | mrb_state_atexit(mrb_state *mrb, mrb_atexit_func f)
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| 202 | {
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| 203 | #ifdef MRB_FIXED_STATE_ATEXIT_STACK
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| 204 | if (mrb->atexit_stack_len + 1 > MRB_FIXED_STATE_ATEXIT_STACK_SIZE) {
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| 205 | mrb_raise(mrb, E_RUNTIME_ERROR, "exceeded fixed state atexit stack limit");
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| 206 | }
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| 207 | #else
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| 208 | size_t stack_size;
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| 209 |
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| 210 | stack_size = sizeof(mrb_atexit_func) * (mrb->atexit_stack_len + 1);
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| 211 | if (mrb->atexit_stack_len == 0) {
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| 212 | mrb->atexit_stack = (mrb_atexit_func*)mrb_malloc(mrb, stack_size);
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[331] | 213 | }
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| 214 | else {
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[270] | 215 | mrb->atexit_stack = (mrb_atexit_func*)mrb_realloc(mrb, mrb->atexit_stack, stack_size);
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| 216 | }
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| 217 | #endif
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| 218 |
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| 219 | mrb->atexit_stack[mrb->atexit_stack_len++] = f;
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| 220 | }
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