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# Copyrights 2011-2020 by [Mark Overmeer ]. |
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# For other contributors see ChangeLog. |
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# See the manual pages for details on the licensing terms. |
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# Pod stripped from pm file by OODoc 2.02. |
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# This code is part of distribution IOMux. Meta-POD processed with OODoc |
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# into POD and HTML manual-pages. See README.md |
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# Copyright Mark Overmeer. Licensed under the same terms as Perl itself. |
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package IOMux::Pipe::Write; |
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use vars '$VERSION'; |
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$VERSION = '1.01'; |
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use base 'IOMux::Handler::Write'; |
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use warnings; |
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use strict; |
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use Log::Report 'iomux'; |
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use Fcntl; |
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use POSIX qw/:errno_h :sys_wait_h/; |
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use File::Spec (); |
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use File::Basename 'basename'; |
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use constant PIPE_BUF_SIZE => 4096; |
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sub init($) |
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{ my ($self, $args) = @_; |
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my $command = $args->{command} |
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or error __x"no command to run specified in {pkg}", pkg => __PACKAGE__; |
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my ($cmd, @cmdopts) = ref $command eq 'ARRAY' ? @$command : $command; |
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my $name = $args->{name} = '|'.(basename $cmd); |
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my ($rh, $wh); |
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pipe $rh, $wh |
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or fault __x"cannot create pipe for {cmd}", cmd => $name; |
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my $pid = fork; |
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defined $pid |
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or fault __x"failed to fork for pipe {cmd}", cmd => $name; |
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if($pid==0) |
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{ # client |
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close $wh; |
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open STDIN, '<&', $rh |
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or fault __x"failed to redirect STDIN for pipe {cmd}", cmd => $name; |
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open STDOUT, '>', File::Spec->devnull; |
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open STDERR, '>', File::Spec->devnull; |
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exec $cmd, @cmdopts |
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or fault __x"failed to exec for pipe {cmd}", cmd => $name; |
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} |
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$self->{IMPW_pid} = $pid; |
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# parent |
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close $rh; |
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fcntl $wh, F_SETFL, O_NONBLOCK; |
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$args->{fh} = $wh; |
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$self->SUPER::init($args); |
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$self; |
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} |
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sub bare($%) |
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{ my ($class, %args) = @_; |
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my $self = bless {}, $class; |
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my ($rh, $wh); |
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pipe $rh, $wh |
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or fault __x"cannot create bare pipe writer"; |
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$args{read_size} ||= 4096; |
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fcntl $wh, F_SETFL, O_NONBLOCK; |
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$args{fh} = $wh; |
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$self->SUPER::init(\%args); |
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($self, $rh); |
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} |
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85
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86
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sub open($$@) |
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{ my ($class, $mode, $cmd) = (shift, shift, shift); |
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ref $cmd eq 'ARRAY' |
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? $class->new(command => $cmd, mode => $mode, @_) |
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: $class->new(command => [$cmd, @_] , mode => $mode); |
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} |
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93
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#------------------- |
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95
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0
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0
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1
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sub mode() {shift->{IMPW_mode}} |
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0
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1
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sub childPid() {shift->{IMPW_pid}} |
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#------------------- |
99
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100
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sub close($) |
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4
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4
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1
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18
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{ my ($self, $cb) = @_; |
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my $pid = $self->{IMPW_pid} |
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4
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100
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or return $self->SUPER::close($cb); |
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105
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2
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waitpid $pid, WNOHANG; |
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2
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24
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local $?; |
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2
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$self->SUPER::close($cb); |
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} |
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110
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111
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112
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1; |