[wxlua-users] LuaLans threading, was Re: mingw compiling wxlua problems

[John L. <jla...@gm...>]

On Tue, Sep 18, 2012 at 12:27 PM, Victor Bombi <so...@te...> wrote:
>
>> Is there any difference between luaBitOp and the one wxLua provides?
>
> The main reason I am using it is because I need it in secondary
> lanes.(requiring wx for that would be
> too much,  besides it cant be done)

I plan to switch to the Lua 5.2 bitlib, so it will be in the table
bit32 to smooth the 5.2 transition.

Something along these lines:
http://smbolton.com/lua/lbitlib-5.2.0-alpha-backport1.c

>> On the other hand, if you want to use wxWidgets structures like a
>> wxImage, wxRect, etc, then consider that calling require("wx") takes a
>> fair amount of time itself and it may not be worth creating the
>> thread. Perhaps you can extract the work that needs to be done in
>> pure-Lua structures.
>
> I am not sure about what you mean. If you mean sending by lindas some kind
> of description for the
> work to be done by the wx lane and receiving the answer by lindas also, That
> is what I am already
> doing for creating windows from other lanes or using wxDir.

Perhaps it doesn't make sense for what you are doing, but I was
suggesting doing the calculations or whatever long task you need to do
in the thread in pure Lua so you wouldn't even need wxLua.

-----------------------------

In terms of not loading wxLua twice, there is not very much difference
between the 2.8.10 and 2.8.12 version.

2.8.12
http://wxlua.svn.sourceforge.net/viewvc/wxlua/trunk/wxLua/modules/luamodule/luamodule.cpp?revision=136&view=markup

2.8.10
http://wxlua.cvs.sourceforge.net/viewvc/wxlua/wxLua/modules/luamodule/src/luamodule.cpp?revision=1.10&view=markup

In fact, in terms of calling require("wx") the only difference I think
matters is the call to wxSetInstance(hDll);

Can you change it to this and see if you can load it multiple times as
you used to?

161 	#ifdef __WXMSW__
162 	// wxEntryStart() calls DoCommonPreInit() which calls
163 	// wxSetInstance(::GetModuleHandle(NULL)); if wxGetInstance() is NULL.

if (hDll == NULL)
   wxSetInstance(hDll);

165 	#endif // __WXMSW__

Regards,
    John