AnyEvent::Impl::Glib(3User Contributed Perl DocumentaAnyEvent::Impl::Glib(3pm)
NAME
AnyEvent::Impl::Glib - AnyEvent adaptor for Glib
SYNOPSIS
use AnyEvent;
use Glib;
# this module gets loaded automatically as required
DESCRIPTION
This module provides transparent support for AnyEvent. You don't have
to do anything to make Glib work with AnyEvent except by loading Glib
before creating the first AnyEvent watcher.
Glib is probably the most inefficient event loop that has ever seen the
light of the world: Glib not only scans all its watchers (really, ALL
of them, whether I/O-related, timer-related or what not) during each
loop iteration, it also does so multiple times and rebuilds the poll
list for the kernel each time again, dynamically even. Newer versions
of libglib fortunately do not call malloc/free on every single watcher
invocation, though.
Glib also enforces certain undocumented behaviours, for example, you
cannot always remove active child watchers, and the conditions on when
it is valid to do so are not documented. Of course, if you get it
wrong, you get "GLib-CRITICAL" messages. This makes it extremely hard
to write "correct" glib programs, as you have to study the source code
to get it right, and hope future versions don't change any internals.
AnyEvent implements the necessary workarounds, at a small performance
cost.
On the positive side, and most importantly, when it works, Glib
generally works correctly, no quarrels there.
If you create many watchers (as in: more than two), you might consider
one of the Glib::EV, EV::Glib or Glib::Event modules that map Glib to
other, more efficient, event loops.
This module uses the default Glib main context for all its watchers.
SEE ALSO
AnyEvent, Glib.
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://anyevent.schmorp.de
perl v5.36.0 2022-10-20 AnyEvent::Impl::Glib(3pm)
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