/usr/share/perl5/Child/Link/Proc.pm is in libchild-perl 0.013-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | package Child::Link::Proc;
use strict;
use warnings;
use Carp;
use Carp;
use Child::Util;
use base 'Child::Link';
add_accessors qw/exit/;
sub is_complete {
my $self = shift;
$self->_wait();
return defined($self->exit);
}
sub wait {
my $self = shift;
return unless $self->_wait(1);
return !$self->exit;
}
sub exit_status {
my $self = shift;
return unless $self->is_complete;
return ($self->exit >> 8);
}
sub unix_exit {
my $self = shift;
return unless $self->is_complete;
return $self->exit;
}
sub _wait {
my $self = shift;
my ( $block ) = @_;
#non-blocking to check if process was terminated
#blocking to wait until it finishes
unless ( defined $self->exit ) {
my @flags;
require POSIX unless $block;
my $ret;
my $x = 1;
do {
sleep(1) if defined $ret;
$ret = waitpid( $self->pid, $block ? 0 : &POSIX::WNOHANG );
} while ( $block && !$ret );
return 0 unless $ret;
if ($^O eq 'MSWin32') {
croak( "wait returned $ret: No such process " . $self->pid )
if $ret == -1; #forked threads on Win32 have negative pids
} else {
croak( "wait returned $ret: No such process " . $self->pid )
if $ret < 0;
}
Child->_clean_proc($self);
$self->_exit( $? );
}
return defined($self->exit);
}
sub kill {
my $self = shift;
my ( $sig ) = @_;
kill( $sig, $self->pid );
}
1;
=head1 NAME
Child::Link::Proc - Proc object used by L<Child>.
=head1 SEE ALSO
This class inherits from:
=over 4
=item L<Child::Link>
=back
=head1 METHODS
=over 4
=item $bool = $proc->is_complete()
Check if the child is finished (non-blocking)
=item $proc->wait()
Wait until child terminates, destroy remaining zombie process (blocking)
=item $proc->kill($SIG)
Send the $SIG signal to the child process.
B<NOTE>: kill() is unpredictable on windows, strawberry perl sends the kill
signal to the parent as well as the child.
=item $proc->pid()
Returns the process PID.
=item $proc->exit_status()
Will be undef unless the process has exited, otherwise it will have the exit
status.
B<Note>: When you call exit($N) the actual unix exit status will be bit shifted
with extra information added. exit_status() will shift the value back for you.
That means exit_status() will return 2 when your child calls exit(2) see
unix_exit() if you want the actual value wait() assigned to $?.
=item $proc->unix_exit()
When you call exit($N) the actual unix exit status will be bit shifted
with extra information added. See exit_status() if you want the actual value
used in exit() in the child.
=back
=head1 HISTORY
Most of this was part of L<Parallel::Runner> intended for use in the L<Fennec>
project. Fennec is being broken into multiple parts, this is one such part.
=head1 FENNEC PROJECT
This module is part of the Fennec project. See L<Fennec> for more details.
Fennec is a project to develop an extendable and powerful testing framework.
Together the tools that make up the Fennec framework provide a potent testing
environment.
The tools provided by Fennec are also useful on their own. Sometimes a tool
created for Fennec is useful outside the greater framework. Such tools are
turned into their own projects. This is one such project.
=over 2
=item L<Fennec> - The core framework
The primary Fennec project that ties them all together.
=back
=head1 AUTHORS
Chad Granum L<exodist7@gmail.com>
=head1 COPYRIGHT
Copyright (C) 2010 Chad Granum
Child is free software; Standard perl licence.
Child is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the license for more details.
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