Upstream module usage to process data

[Maxim Dounin]

Hello!

On Wed, May 31, 2017 at 09:00:42AM -0400, isolomka wrote:

> So I have my own module which is working with thread pool enabled. 
> ngx_http_upstream_init is called from my thread_event_handler, flag r->aio
> is enabled.
> In fact, upstream is not initialized at all.
> 
> When i set aio flag to false and call to ngx_http_upstream_init, i'm getting
> a core dump in ngx_epoll_process_events.

You certainly should not try to call upstream before your module's 
thread operation is complete.

-- 
Maxim Dounin
http://nginx.org/