/usr/share/perl5/IO/Async/DetachedCode.pm is in libio-async-perl 0.51-4.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | # You may distribute under the terms of either the GNU General Public License
# or the Artistic License (the same terms as Perl itself)
#
# (C) Paul Evans, 2007-2011 -- leonerd@leonerd.org.uk
package IO::Async::DetachedCode;
use strict;
use warnings;
our $VERSION = '0.51';
use Carp;
use IO::Async::Function;
=head1 NAME
C<IO::Async::DetachedCode> - execute code asynchronously in child processes
=head1 SYNOPSIS
This object is used indirectly via the C<IO::Async::Loop>'s C<detach_code>
method.
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $code = $loop->detach_code(
code => sub {
my ( $number ) = @_;
return is_prime( $number );
}
);
$code->call(
args => [ 123454321 ],
on_return => sub {
my $isprime = shift;
print "123454321 " . ( $isprime ? "is" : "is not" ) . " a prime number\n";
},
on_error => sub {
print STDERR "Cannot determine if it's prime - $_[0]\n";
},
);
$loop->run;
=head1 DESCRIPTION
This object class provides a legacy compatibility layer for existing code
that tries to construct such an object. It should not be used for new code;
see instead the L<IO::Async::Function> object, for which this is now a
wrapper.
=cut
=head1 CONSTRUCTOR
=cut
=head2 $code = $loop->detach_code( %params )
This function returns a new instance of a C<IO::Async::DetachedCode> object.
The C<%params> hash takes the following keys:
=over 8
=item code => CODE
A block of code to call in the child process.
=item stream
=item marshaller
These arguments are no longer used; any values passed will be ignored.
=item workers => INT
Optional integer, specifies the number of parallel workers to create.
If not supplied, 1 is used.
=item exit_on_die => BOOL
=item setup => ARRAY
Passed through to the underlying C<IO::Async::Function> object.
=back
=cut
sub new
{
my $class = shift;
my ( %params ) = @_;
my $loop = delete $params{loop} or croak "Expected a 'loop'";
# No-longer supported args
delete $params{marshaller};
delete $params{stream};
my $workers = delete $params{workers} || 1;
my $function = IO::Async::Function->new(
min_workers => $workers,
max_workers => $workers,
%params,
);
$loop->add( $function );
return bless {
function => $function,
}, $class;
}
sub DESTROY
{
my $self = shift;
my $function = $self->{function};
$function->loop->remove( $function );
}
=head1 METHODS
=cut
=head2 $code->call( %params )
Calls one invocation of the contained function code block. See the C<call>
method on C<IO::Async::Function> for more detail.
=cut
sub call
{
my $self = shift;
$self->{function}->call( @_ );
}
=head2 $code->shutdown
This method requests that the detached worker processes stop running.
=cut
sub shutdown
{
my $self = shift;
$self->{function}->stop;
}
=head2 $n_workers = $code->workers
This method in scalar context returns the number of workers currently running.
=head2 @worker_pids = $code->workers
This method in list context returns a list of the PID numbers of all the
currently running worker processes.
=cut
sub workers
{
my $self = shift;
# Lots of cheating here
# Works in scalar or list
return keys %{ $self->{function}{workers} };
}
=head1 AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
=cut
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