public static int MetaRefManGc(IntPtr l)
{
using (var lr = new LuaStateRecover(l))
{
var oldtop = l.gettop();
if (oldtop < 1)
{
return(0);
}
if (l.isuserdata(1) && !l.islightuserdata(1))
{
IntPtr pud = l.touserdata(1);
IntPtr hval = Marshal.ReadIntPtr(pud);
GCHandle handle = (GCHandle)hval;
LuaThreadRefMan ud = null;
try
{
ud = handle.Target as LuaThreadRefMan;
}
catch { }
if (!object.ReferenceEquals(ud, null))
{
ud.Close();
}
handle.Free();
}
}
return(0);
}
public static LuaThreadRefMan PrepareRefMan(this IntPtr l)
{
if (l != IntPtr.Zero)
{
using (var lr = new LuaStateRecover(l))
{
l.GetField(lua.LUA_REGISTRYINDEX, "___thdreg");
IntPtr pud = l.touserdata(-1);
GCHandle handle;
if (pud != IntPtr.Zero)
{
IntPtr hval = Marshal.ReadIntPtr(pud);
handle = (GCHandle)hval;
LuaThreadRefMan ud = null;
try
{
ud = handle.Target as LuaThreadRefMan;
}
catch { }
if (ud != null)
{
return(ud);
}
}
l.pop(1);
l.newtable(); // meta
l.pushcfunction(FuncRefManGc); // meta, func
l.SetField(-2, "__gc"); // meta
LuaThreadRefMan man = new LuaThreadRefMan();
pud = l.newuserdata(new IntPtr(Marshal.SizeOf(typeof(IntPtr)))); // meta, man
handle = GCHandle.Alloc(man);
Marshal.WriteIntPtr(pud, (IntPtr)handle);
l.insert(-2); // man, meta
l.setmetatable(-2); // man
l.SetField(lua.LUA_REGISTRYINDEX, "___thdreg"); // (empty)
return(man);
}
}
return(null);
}
public static LuaThreadRefMan GetOrCreateRefMan(this IntPtr l)
{
l.checkstack(1);
l.pushlightuserdata(LuaConst.LRKEY_REF_MAN); // #man
l.gettable(lua.LUA_REGISTRYINDEX); // man
if (l.isuserdata(-1))
{
LuaThreadRefMan man = null;
try
{
IntPtr pud = l.touserdata(-1);
if (pud != IntPtr.Zero)
{
IntPtr hval = Marshal.ReadIntPtr(pud);
GCHandle handle = (GCHandle)hval;
man = handle.Target as LuaThreadRefMan;
}
}
catch { }
l.pop(1); // X
return(man);
}
else
{
l.checkstack(5);
l.pop(1); // X
l.pushlightuserdata(LuaConst.LRKEY_REF_MAN); // #man
LuaThreadRefMan man = new LuaThreadRefMan();
var h = l.PushLuaRawObject(man); // #man man
l.PushCommonMetaTable(); // #man man meta
l.setmetatable(-2); // #man man
l.newtable(); // #man man env
l.pushlightuserdata(LuaConst.LRKEY_OBJ_META_EX); // #man man env #meta
l.pushlightuserdata(h); // #man man env #meta meta
l.settable(-3); // #man man env
l.setfenv(-2); // #man man
l.settable(lua.LUA_REGISTRYINDEX); // X
return(man);
}
}
public static LuaThreadRefMan GetRefMan(this IntPtr l)
{
if (l != IntPtr.Zero)
{
using (var lr = new LuaStateRecover(l))
{
l.GetField(lua.LUA_REGISTRYINDEX, "___thdreg");
IntPtr pud = l.touserdata(-1);
if (pud != IntPtr.Zero)
{
IntPtr hval = Marshal.ReadIntPtr(pud);
GCHandle handle = (GCHandle)hval;
LuaThreadRefMan ud = null;
try
{
ud = handle.Target as LuaThreadRefMan;
}
catch { }
return(ud);
}
}
}
return(null);
}
