NAME

Sys::Virt::Event - An event loop contract

DESCRIPTION

The Sys::Virt::Event module represents the contract for integrating libvirt with an event loop. This package is abstract and intended to be subclassed to provide an actual implementation.

METHODS

register($impl): Register an event loop implementation. The implementation should be a instance of a sub-class of the Sys::Virt::Event package.
$self->_run_handle_callback($watch, $fd, $events, $cb, $opaque): A helper method for executing a callback in response to one of more $events on the file handle $fd. The $watch number is the unique idenifier associated with the file descriptor. The $cb and $opaque parameters are the callback and data registered for the handle.
$self->_run_timeout_callback($timer, $cb, $opaque): A helper method for executing a callback in response to the expiry of a timeout identified by $timer. The $cb and $opaque parameters are the callback and data registered for the timeout.
$self->_free_callback_opaque($ff, $opaque): A helper method for freeing the data associated with a callback. The $ff and $opaque parameters are the callback and data registered for the handle/timeout.

CONSTANTS

FILE HANDLE EVENTS

When integrating with an event loop the following constants define the file descriptor events

Sys::Virt::Event::HANDLE_READABLE: The file descriptor has data available for read without blocking
Sys::Virt::Event::HANDLE_WRITABLE: The file descriptor has ability to write data without blocking
Sys::Virt::Event::HANDLE_ERROR: An error occurred on the file descriptor
Sys::Virt::Event::HANDLE_HANGUP: The remote end of the file descriptor closed

AUTHORS

Daniel P. Berrange <berrange@redhat.com>

COPYRIGHT

LICENSE

This program is free software; you can redistribute it and/or modify it under the terms of either the GNU General Public License as published by the Free Software Foundation (either version 2 of the License, or at your option any later version), or, the Artistic License, as specified in the Perl README file.

CPAN RT