Re: Garbage collection question
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- Subject: Re: Garbage collection question
- From: Patrick Donnelly <batrick@...>
- Date: 2012年7月10日 14:15:12 -0400
On Tue, Jul 10, 2012 at 2:06 PM, John Dunn <John_Dunn@qscaudio.com> wrote:
>> Do you know there is a value for an invalid reference (actually two) LUA_NOREF and LUA_REFNIL?
> Do you mean instead of using -1? Nope. I'll switch to using that.
It would be cleaner (and might fix your problem incidentally) if you
used a static variable address (with light userdata) for keeping track
of the reference, e.g.:
static const int timer;
static int SetHandler( lua_State* L ) {
luaL_checktype(L, 1, LUA_TFUNCTION);
lua_pushlightuserdata(L, &timer);
lua_pushvalue(L, 1)
lua_rawset(L, LUA_REGISTRYINDEX);
return 0;
}
static const struct luaL_reg TestLibMethods[] = {
{ "SetHandler", SetHandler },
{NULL, NULL}
};
static void CallHandler(lua_State* L) {
lua_pushlightuserdata(L, &timer);
lua_rawget(L, LUA_REGISTRYINDEX);
if (lua_isfunction(L, -1)) {
lua_pcall(L, 0, 0, 0);
}
}
--
- Patrick Donnelly