[Libevent-users] popen() and bufferevents

[Bas Verhoeven <libevent@xxxxxxxxxx>]

Hi,

I am using popen() to execute a program which will run for a few minutes 
and I want to be notified of any input coming in so I can write all that 
to a live log window. Just wondering: Is there anything stopping me from 
using bufferevents for this?

Even tho bufferevent seems to be more geared towards sockets I guess I 
could just use fileno(FILE*) and pass that onto bufferevent_new (which 
appears to be somewhat hidden, or well - I can't find it at 
http://monkey.org/~provos/libevent/doxygen-2.0.1/bufferevent_8h.html), 
right?

I'm asking because this is what I have implemented at the moment:

 if ((fp = popen(command, "r")))
 {
     int fd = fileno(fp);
     fcntl(fd, F_SETFL, O_NONBLOCK);

     bev = bufferevent_new(fd, &read_cb, NULL, &error_cb, NULL);
     bufferevent_base_set(base, bev); // <- apparently there is no way 
to do this in one command yet?
     bufferevent_enable(bev, EV_READ);
 }

It however never calls my read callback, only the error callback with an 
EOF event once the program dies. I am suspecting that the program that I 
am running is not being nice. But before I start debugging that program 
I just want to verify that this is something that would be possible with 
bufferevents.

Is there any (other/recommended) way to do this?

Environment: Debian stable, libevent 2.0.8-rc

--
Bas
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