IO::Pty::HalfDuplex::SysctlPoll - wait for blocking reads using sysctl
IO::Pty::HalfDuplex->new(backend => 'SysctlPoll')
IO::Pty::HalfDuplex::SyctlPoll needs to poll, and will waste a certain amount of CPU time while the child runs.
Otherwise it is probably the most robust backend.
Copyright 2008-2009 Stefan O'Rear.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.