[Libevent-users] the usage of ev_pncalls in struct event

[xiaobing jiang <s7v7nislands@xxxxxxxxx>]

hi all:
  what's the usage of ev_pncalls in struct event? why not direct
use ev_ncalls?

two question:
1. in libevent 1.4.14, it seems only used in event_process_active(),
but in libeven2 it used in event_signal_closure. why?
2. Â Â Â Â ev->ev_pncalls = &ncalls; Â// from event_process_active()
here, ncalls is a stack variable.

     Âif (ev->ev_ncalls && ev->ev_pncalls) {
       Â/* Abort loop */
       Â*ev->ev_pncalls = 0;   // Âev.ev_pncalls point to a
stack variable, will this cover the stack?
     Â}

thanks!
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