NAME

Reflex::POE::Wheel::Run - Represent POE::Wheel::Run as a Reflex class.

VERSION

version 0.070

SYNOPSIS

Unfortunately there isn't a concise, completely executable example for the synopsis at this time. Please see eg-07-wheel-run.pl and eg-08-observer-trait.pl in the distribution's eg directory for longer but fully executable ones.

        has child => (
                traits  => ['Reflex::Trait::Observed'],
                isa     => 'Reflex::POE::Wheel::Run|Undef',
                is      => 'rw',
        );

        sub BUILD {
                my $self = shift;
                $self->child(
                        Reflex::POE::Wheel::Run->new(
                                Program => "$^X -wle 'print qq[pid(\$\$) moo(\$_)] for 1..10; exit'",
                        )
                );
        }

        sub on_child_stdout {
                my ($self, $args) = @_;
                print "stdout: $args->{output}\n";
        }

        sub on_child_close {
                my ($self, $args) = @_;
                print "child closed all output\n";
        }

        sub on_child_signal {
                my ($self, $args) = @_;
                print "child $args->{pid} exited: $args->{exit}\n";
                $self->child(undef);
        }

DESCRIPTION

Reflex::POE::Wheel::Run represents an enhanced POE::Wheel::Run object. It will manage a child process, and it will also wait for (and report on) the corresponding SIGCHLD.

This module delegates to POE::Wheel::Run for most of its implementation. Please refer to that module for implementation details.

Public Methods

This class adds public methods specific to POE::Wheel::Run's operation. However, common methods like put() are both implemented and documented in the base Reflex::POE::Wheel class.

kill

kill() passes its arguments to POE::Wheel::Run's kill() method.

Public Events

Objects of this class emit all of POE::Wheel::Run's events, albeit renamed into Reflex-friendly forms. Generally these forms are determined by removing the "Event" suffix and lowercasing what remains. POE::Wheel::Run's StdinEvent becomes "stdin", and so on.

stdin

See POE::Wheel::Run's StdinEvent. Within Reflex, this event comes with only one parameter: "wheel_id". This is the POE::Wheel::Run object's ID.

stdout

See POE::Wheel::Run's StdoutEvent. Reflex includes two parameters: "wheel_id" and "output". The latter parameter contains data the child process wrote to its STDOUT handle.

stderr

See POE::Wheel::Run's StderrEvent. Reflex includes two parameters: "wheel_id" and "output". The latter parameter contains data the child process wrote to its STDERR handle.

error

See POE::Wheel::Run's ErrorEvent. Reflex maps the wheel's parameters to: "operation", "errnum", "errstr", "wheel_id" and "handle_name", respectively.

closed

See POE::Wheel::Run's CloseEvent. Reflex includes only one parameter for this event: "wheel_id".

CAVEATS

This class could further be improved so that it doesn't report SIGCHLD until all the child's output has been received and processed. This would resolve a long-standing nondeterminism in the timing of on_child_close() vs. on_child_signal().

SEE ALSO

Moose::Manual::Concepts

Reflex Reflex::POE::Event Reflex::POE::Postback Reflex::POE::Session Reflex::POE::Wheel

"ACKNOWLEDGEMENTS" in Reflex "ASSISTANCE" in Reflex "AUTHORS" in Reflex "BUGS" in Reflex "BUGS" in Reflex "CONTRIBUTORS" in Reflex "COPYRIGHT" in Reflex "LICENSE" in Reflex "TODO" in Reflex

cpanm Reflex

perl -MCPAN -e shell
install Reflex