901   global_State *g;  in lua_gc()  local
903   g = G(L);  in lua_gc()
906       g->GCthreshold = MAX_LUMEM;  in lua_gc()
910       g->GCthreshold = g->totalbytes;  in lua_gc()
919       res = cast_int(g->totalbytes >> 10);  in lua_gc()
923       res = cast_int(g->totalbytes & 0x3ff);  in lua_gc()
928       if (a <= g->totalbytes)  in lua_gc()
929         g->GCthreshold = g->totalbytes - a;  in lua_gc()
931         g->GCthreshold = 0;  in lua_gc()
932       while (g->GCthreshold <= g->totalbytes) {  in lua_gc()
934         if (g->gcstate == GCSpause) {  /* end of cycle? */  in lua_gc()
942       res = g->gcpause;  in lua_gc()
943       g->gcpause = data;  in lua_gc()
947       res = g->gcstepmul;  in lua_gc()
948       g->gcstepmul = data;  in lua_gc()