/*
** if object 'o' has a finalizer, remove it from 'allgc' list (must
** search the list to find it) and link it in 'finobj' list.
*/
public static void luaC_checkfinalizer(lua_State L, GCObject o, Table mt)
{
global_State g = G(L);
if (testbit(gch(o).marked, SEPARATED) || /* obj. is already separated... */
isfinalized(o) || /* ... or is finalized... */
gfasttm(g, mt, TMS.TM_GC) == null) /* or has no finalizer? */
{
return; /* nothing to be done */
}
else /* move 'o' to 'finobj' list */
{
GCObjectRef p;
for (p = new AllGCRef(g); p.get() != o; p = new NextRef(gch(p.get())))
{
;
}
p.set(gch(o).next); /* remove 'o' from root list */
gch(o).next = g.finobj; /* link it in list 'finobj' */
g.finobj = o;
l_setbit(ref gch(o).marked, SEPARATED); /* mark it as such */
resetoldbit(o); /* see MOVE OLD rule */
}
}
/*
** if userdata 'u' has a finalizer, remove it from 'allgc' list (must
** search the list to find it) and link it in 'udgc' list.
*/
public static void luaC_checkfinalizer(lua_State L, Udata u)
{
global_State g = G(L);
if (testbit(u.uv.marked, SEPARATED) || /* userdata is already separated... */
isfinalized(u.uv) || /* ... or is finalized... */
gfasttm(g, u.uv.metatable, TMS.TM_GC) == null) /* or has no finalization? */
{
return; /* nothing to be done */
}
else /* move 'u' to 'udgc' list */
{
GCObjectRef p;
for (p = new AllGCRef(g); p.get() != obj2gco(u); p = new NextRef(gch(p.get())))
{
;
}
p.set(u.uv.next); /* remove 'u' from root list */
u.uv.next = g.udgc; /* link it in list 'udgc' */
g.udgc = obj2gco(u);
l_setbit(ref u.uv.marked, SEPARATED); /* mark it as such */
resetoldbit(obj2gco(u)); /* see MOVE OLD rule */
}
}