Re: lua_close + IUP = crash?

[Rob Hoelz <rob@...>]

On Thu, 10 Jan 2013 23:41:47 -0800 (PST)
mbul <mbul@arqa.ru> wrote:

> Hi, 
> my program runs Lua scripts from multiple threads. It looks like this:
> 
> 1. 
> In my host program:
> 
> ...
> lvm1 = lua_open()
> ...
> lvm2 = lua_newthread()
> ...
> 
> 2.
> Start a separate OS-thread that does the following:
> ...
> 
> lua_getfield (main, LUA_GLOBALSINDEX, "main");			
> int lua_err = lua_qpcall(lvm2, main, 0, 0, 0);                 
> 	if (lua_err)
> 	{
> 		script->FormatLuaErrMsg(lvm, lua_err);
> 		return lua_err;
> 	}
> return 0;
> 
> 
> Lua script code:
> 
> function main()
> require "iuplua"
> dlg = iup.dialog
> {
>   iup.vbox
>   {
>     iup.button{title="Button Very Long Text", size="50x"},
>     iup.button{title="short", expand="HORIZONTAL"},
>     iup.button{title="Mid Button", size="50x"}
>   }
>   ;title="IupDialog", font="Helvetica, Bold 14" 
> }
> 
> -- Show the dialog and run the main loop
> dlg:show()
> 
> if (not iup.MainLoopLevel or iup.MainLoopLevel()==0) then
>   iup.MainLoop()
> end
> iup.Close()
> end
> 3.
> When the thread is finished, the following occurs:
> lua_close(lvm1) // lvm1 = lua_open()
> and then an error ACCESS VIOLATION occurs. Error occurred while
> releasing resources in Lua sources freeobj(L, curr);
> 
> Got any ideas?
> 
> 
> 
> 
> 
> 
> --
> View this message in context:
> http://lua.2524044.n2.nabble.com/lua-close-IUP-crash-tp7645673.html
> Sent from the Lua-l mailing list archive at Nabble.com.
> 

Hi mbul,

You can't use OS threads with coroutines in Lua.  Doing so will result
in problems like you see here.

-Rob

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