** if object 'o' has a finalizer, remove it from 'allgc' list (must ** search the list to find it) and link it in 'finobj' list. */
| 1066 | ** search the list to find it) and link it in 'finobj' list. |
| 1067 | */ |
| 1068 | void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt) { |
| 1069 | global_State *g = G(L); |
| 1070 | if (tofinalize(o) || /* obj. is already marked... */ |
| 1071 | gfasttm(g, mt, TM_GC) == NULL || /* or has no finalizer... */ |
| 1072 | (g->gcstp & GCSTPCLS)) /* or closing state? */ |
| 1073 | return; /* nothing to be done */ |
| 1074 | else { /* move 'o' to 'finobj' list */ |
| 1075 | GCObject **p; |
| 1076 | if (issweepphase(g)) { |
| 1077 | makewhite(g, o); /* "sweep" object 'o' */ |
| 1078 | if (g->sweepgc == &o->next) /* should not remove 'sweepgc' object */ |
| 1079 | g->sweepgc = sweeptolive(L, g->sweepgc); /* change 'sweepgc' */ |
| 1080 | } |
| 1081 | else |
| 1082 | correctpointers(g, o); |
| 1083 | /* search for pointer pointing to 'o' */ |
| 1084 | for (p = &g->allgc; *p != o; p = &(*p)->next) { /* empty */ } |
| 1085 | *p = o->next; /* remove 'o' from 'allgc' list */ |
| 1086 | o->next = g->finobj; /* link it in 'finobj' list */ |
| 1087 | g->finobj = o; |
| 1088 | l_setbit(o->marked, FINALIZEDBIT); /* mark it as such */ |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | /* }====================================================== */ |
| 1093 |
no test coverage detected