Function propagatemark

3rd/lua-5.4.3/src/lgc.c:652–665

** traverse one gray object, turning it to black. */

** traverse one gray object, turning it to black.
*/
static lu_mem propagatemark (global_State *g) {
  GCObject *o = g->gray;
  nw2black(o);
  g->gray = *getgclist(o);  /* remove from 'gray' list */
  switch (o->tt) {
    case LUA_VTABLE: return traversetable(g, gco2t(o));
    case LUA_VUSERDATA: return traverseudata(g, gco2u(o));
    case LUA_VLCL: return traverseLclosure(g, gco2lcl(o));
    case LUA_VCCL: return traverseCclosure(g, gco2ccl(o));
    case LUA_VPROTO: return traverseproto(g, gco2p(o));
    case LUA_VTHREAD: return traversethread(g, gco2th(o));
    default: lua_assert(0); return 0;
  }
}


static lu_mem propagateall (global_State *g) {