.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.16) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .ie \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . nr % 0 . rr F .\} .el \{\ . de IX .. .\} .\" .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). .\" Fear. Run. Save yourself. No user-serviceable parts. . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} .rm #[ #] #H #V #F C .\" ======================================================================== .\" .IX Title "IO::Async::PID 3pm" .TH IO::Async::PID 3pm "2012-10-24" "perl v5.14.2" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" "IO::Async::PID" \- event callback on exit of a child process .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 2 \& use IO::Async::PID; \& use POSIX qw( WEXITSTATUS ); \& \& use IO::Async::Loop; \& my $loop = IO::Async::Loop\->new; \& \& my $kid = $loop\->fork( \& code => sub { \& print "Child sleeping..\en"; \& sleep 10; \& print "Child exiting\en"; \& return 20; \& }, \& ); \& \& print "Child process $kid started\en"; \& \& my $pid = IO::Async::PID\->new( \& pid => $kid, \& \& on_exit => sub { \& my ( $self, $exitcode ) = @_; \& printf "Child process %d exited with status %d\en", \& $self\->pid, WEXITSTATUS($exitcode); \& }, \& ); \& \& $loop\->add( $pid ); \& \& $loop\->run; .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" This subclass of IO::Async::Notifier invokes its callback when a process exits. .PP For most use cases, a IO::Async::Process object provides more control of setting up the process, connecting filehandles to it, sending data to and receiving data from it. .SH "EVENTS" .IX Header "EVENTS" The following events are invoked, either using subclass methods or \s-1CODE\s0 references in parameters: .ie n .SS "on_exit $exitcode" .el .SS "on_exit \f(CW$exitcode\fP" .IX Subsection "on_exit $exitcode" Invoked when the watched process exits. .SH "PARAMETERS" .IX Header "PARAMETERS" The following named parameters may be passed to \f(CW\*(C`new\*(C'\fR or \f(CW\*(C`configure\*(C'\fR: .IP "pid => \s-1INT\s0" 8 .IX Item "pid => INT" The process \s-1ID\s0 to watch. Must be given before the object has been added to the containing \f(CW\*(C`IO::Async::Loop\*(C'\fR object. .IP "on_exit => \s-1CODE\s0" 8 .IX Item "on_exit => CODE" \&\s-1CODE\s0 reference for the \f(CW\*(C`on_exit\*(C'\fR event. .PP Once the \f(CW\*(C`on_exit\*(C'\fR continuation has been invoked, the \f(CW\*(C`IO::Async::PID\*(C'\fR object is removed from the containing \f(CW\*(C`IO::Async::Loop\*(C'\fR object. .SH "METHODS" .IX Header "METHODS" .ie n .SS "$process_id = $pid\->pid" .el .SS "\f(CW$process_id\fP = \f(CW$pid\fP\->pid" .IX Subsection "$process_id = $pid->pid" Returns the underlying process \s-1ID\s0 .ie n .SS "$pid\->kill( $signal )" .el .SS "\f(CW$pid\fP\->kill( \f(CW$signal\fP )" .IX Subsection "$pid->kill( $signal )" Sends a signal to the process .SH "AUTHOR" .IX Header "AUTHOR" Paul Evans