Re: [Cppcms-users] best way for background processes

[Artyom B. <art...@ya...>]

 
> Hi everyone,
> 
> my web application uses some background processes for time based things, 
> e.g. "crons", but I need access to the content itself. What is the 
> best 
> way to do this? My first thought was to mount a backgroundprocess as 
> async process and make async_waits,

Yes, this is correct approach, for example, sessions garbage collection
works this way

> but if I try to access to the 
> context it says: "Assertion `px != 0' failed."

See, cppcms::http::context is request/response context... Cron job
does not have any request/response as it is not initiated by 
the client, so you are probably doing something wrong.

Just create a event using deadline_timer, and submit a job
to the thread pool or if it is something very short execute it in
the event loop itself.

Artyom