view release on metacpan or  search on metacpan

lib/AnyEvent/Subprocess.pm  view on Meta::CPAN

points and allow you to add more features.  By default, you just get a
callback when the process exits.  You can also kill the running
process.  That's it.  From there, you can add delegates to add more
features.  You can add a pipe to share between the parent and the
child.  Instead of sharing a pipe, you can have an fd opened to an
arbitrary file descriptor number in the child.  You have an infinite
number of these, so you can capture the child's stdout and stderr,
write to its stdin, and also share a socket for out-of-band
communication.  You can also open a pipe to the child's fd #5 and
write to it.  (This is nice if you are invoking something like C<gpg>
that wants the password written on an arbitrary fd other than 1.)

(This is all done with the included C<Handle> delegate.  See
L<AnyEvent::Subprocess::Job::Delegate::Handle>.)

You can then build upon this; instead of writing your own code to
reading the handles when they become readable and accumulate input,
you can write a delegate that saves all the data coming from a given
handle and gives it to your program after the child exits (via the
C<Done> instance).