EV::MakeMaker - MakeMaker glue for the C-level EV API

1. SYNOPSIS
2. DESCRIPTION
3. HOW TO
   1. Makefile.PL
   2. extension.pm
   3. extension.xs
4. API
5. EXAMPLE

SYNOPSIS

This allows you to access some libevent functionality from other perl modules.

DESCRIPTION

For optimal performance, hook into EV at the C-level. You'll need to make changes to your Makefile.PL, load EV in your pm file and add code to your xs / c file(s).

HOW TO

Makefile.PL

use EV::MakeMaker qw(ev_args);

# ... set up %args ...

WriteMakefile (ev_args (%args));

extension.pm

use EV (); # imports optional

extension.xs

#include "EVAPI.h"

[...]

BOOT:
  I_EV_API (HvNAME (GvSTASH (CvGV (cv))));

API

See the EVAPI.h header, which you should include instead of ev.h.

In short, all the functions and macros from ev.h should work, except that the trailing underscore macros (EV_A_, EV_DEFAULT_) are not available (except EV_P_ :).

Multiplicity is enabled.

The data member in each watcher is of type SV * and not void * (this might change at some point).

EXAMPLE

The EV::Glib, EV::ADNS and Glib::EV modules all give nice examples on how to use this module.

Here are some .xs fragments taken from EV::ADNS that should get you going:

#include "EVAPI.h"

static ev_prepare pw;
static ev_idle iw;

static void
idle_cb (EV_P_ ev_idle *w, int revents)
{
  ev_idle_stop (EV_A, w);
}

MODULE = ...

BOOT:
{
  I_EV_API ("EV::ADNS");
  ev_prepare_init (&pw, prepare_cb);
  ev_init (&iw, idle_cb); ev_set_priority (&iw, EV_MINPRI);
  ev_idle_start (EV_DEFAULT, &iw);
}