EV(3) User Contributed Perl Documentation EV(3)NAMECoro::EV - do events the coro-way, with EV
SYNOPSIS
use Coro;
use Coro::EV;
EV::READ & Coro::EV::timed_io_once $fh, EV::READ, 60
or die "timeout\n";
EV::loop;
DESCRIPTION
This module does two things: First, it offers some utility functions
that might be useful for threads (although Coro::AnyEvent offers more
and more portable functions), and secondly, it integrates Coro into the
EV main loop:
Before the process blocks (in EV::loop) to wait for events, this module
will schedule and run all ready (= runnable) threads of the same or
higher priority. After that, it will cede once to a threads of lower
priority, then continue in the event loop.
That means that threads with the same or higher priority as the threads
running the main loop will inhibit event processing, while threads of
lower priority will get the CPU, but cannot completeley inhibit event
processing. Note that for that to work you actually have to run the EV
event loop in some thread.
RUNNING WITH OR WITHOUT A MAINLOOP
In general, you should always run EV::loop, either in your main
program, or in a separate coroutine. If you don't do that and all
coroutines start waiting for some events, this module will run the
event loop once, but this is very inefficient and will also not make it
possible to run background threads.
To run the EV event loop in a separate thread, you can simply do this:
async { EV::loop };
FUNCTIONS
$revents = Coro::EV::timed_io_once $fileno_or_fh, $events[, $timeout]
Blocks the coroutine until either the given event set has occured
on the fd, or the timeout has been reached (if timeout is missing
or "undef" then there will be no timeout). Returns the received
flags.
Consider using "Coro::AnyEvent::readable" and
"Coro::AnyEvent::writable" instead, they work with any AnyEvent-
supported eventloop.
Coro::EV::timer_once $after
Blocks the coroutine for at least $after seconds.
Consider using "Coro::AnyEvent::sleep" instead, which works with
any AnyEvent-supported eventloop.
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://home.schmorp.de/
perl v5.14.2 2011-11-11 EV(3)
