Re: PIKE_MODULE_INIT/EXIT in a normal pgsql.pike file

On Wed, 22 Oct 2014, Stephen R. van den Berg wrote:

> Stephen R. van den Berg wrote:
>> However, in order to get this flying I basically need to run
>> a separate pgsql backend.  Currently I simply start up a new one in a separate
>> thread for every connection to the database.
>> But, these could be shared by all pgsql connections.
>
>> So, is there some kind of PIKE_MODULE_INIT/EXIT or C-static equivalent
>> which I could use to make sure that I only create at most one thread
>> for this?
>
> Despite the overwhelming response to this question, I tried to investigate
> on my own, and basically I came up with (drumroll):

The equivalent of PIKE_MODULE_INIT for a pmod is create() (or __INIT()),
and destroy() for PIKE_MODULE_EXIT (though there are no guarantees that 
either will be called on exit).

> It's ugly, but it seems to be the only way to have some kind of global
> state over which different threads can meet and sync up.
> However, I'd need a way to serialise a reference to an object (a shared
> backend, to be precise).

Is there a reason a variable in a pmod wouldn't suffice?

-- 
Henrik Grubbström					[email protected]
Roxen Internet Software AB