Re: Sharing data between LuaTask tasks...

[Daniel Quintela <dq@...>]

duck escribió:
> It occurred to me that LuaTask (in which each LuaTask gets its own Lua 
> state in a new thread) might be a handy way of writing simple threaded 
> servers. However, only number and string objects can be passed in messages 
> between tasks.
>
> I was wondering:
>
> 1. Is there any reliable way to pass an accept()ed LuaSocket object from 
> one LuaTask to another? Can userdata be serialised?
>
> 2. If so (and assuming that socket is only ever manipulated in the task to 
> which it's passed), is it safe to pass this sort of data between tasks? Is 
> LuaSocket itself thread-safe?
>
> Has anyone used LuaTask for handling multiple threads which communicate 
> using multiple blocking sockets?
>
>   
There is no general answer about passing userdata.

But in the LuaSocket case... these object has two methods to manipulate 
the underlying native machinery: setfd and getfd.
You can get the native socket with getfd and pass it as an integer value.
If you use skt:setfd( -1 ) the native socket is not closed when skt is 
garbage collected.

You can download a little old examples using this trick at: 
http://www.soongsoft.com/lua/LuaTaskExamples.tar.gz

Best regards,
Daniel