[ANN] ngx_trace - runtime call tracer for nginx

[Alexandr Gomoliako]

Hi guys, I just published a simple tool on github that helps
with module development and learning internals a bit.

Here is a sample output it can generate:

   ngx_process_events_and_timers
      ngx_event_find_timer
      ngx_epoll_process_events
         ngx_event_accept
            ngx_http_init_connection
               ngx_handle_read_event
                  ngx_epoll_add_event
      ngx_event_expire_timers
   ngx_process_events_and_timers
      ngx_event_find_timer
      ngx_epoll_process_events
         ngx_http_init_request
            ngx_http_process_request_line
               ngx_http_read_request_header

github link:
    https://github.com/zzzcpan/ngx_trace