LUA_API lua_State *lua_newthread (lua_State *L) { global_State *g = G(L); lua_State *L1; lua_lock(L); luaC_checkGC(L); /* create new thread */ L1 = &cast(LX *, luaM_newobject(L, LUA_TTHREAD, sizeof(LX)))->l; L1->marked = luaC_white(g); L1->tt = LUA_TTHREAD; /* link it on list 'allgc' */ L1->next = g->allgc; g->allgc = obj2gco(L1); /* anchor it on L stack */ setthvalue(L, L->top, L1); api_incr_top(L); preinit_thread(L1, g); L1->hookmask = L->hookmask; L1->basehookcount = L->basehookcount; L1->hook = L->hook; resethookcount(L1); /* initialize L1 extra space */ memcpy(lua_getextraspace(L1), lua_getextraspace(g->mainthread), LUA_EXTRASPACE); luai_userstatethread(L, L1); stack_init(L1, L); /* init stack */ lua_unlock(L); return L1; }
LUA_API lua_State *lua_newthread (lua_State *L) { lua_State *L1; lua_lock(L); luaC_checkGC(L); L1 = &luaC_newobj(L, LUA_TTHREAD, sizeof(LX), NULL, offsetof(LX, l))->th; setthvalue(L, L->top, L1); api_incr_top(L); preinit_state(L1, G(L)); L1->hookmask = L->hookmask; L1->basehookcount = L->basehookcount; L1->hook = L->hook; resethookcount(L1); luai_userstatethread(L, L1); stack_init(L1, L); /* init stack */ lua_unlock(L); return L1; }