0x1949 Team - FAZEMRX - MANAGER

Edit File: Time::Out.3pm

.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.42)
.\"
.\" 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" ''
.    ds C`
.    ds C'
'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 >0, 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.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{\
.    if \nF \{\
.        de IX
.        tm Index:\\$1\t\\n%\t"\\$2"
..
.        if !\nF==2 \{\
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\" ========================================================================
.\"
.IX Title "Time::Out 3pm"
.TH Time::Out 3pm "2023-11-27" "perl v5.34.0" "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"
Time::Out \- Easily timeout long running operations
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  use Time::Out qw( timeout );
\&
\&  timeout $timeout => sub {
\&    # your operation is implemented here and will be interrupted
\&    # if it runs for more than $timeout seconds
\&  };
\&  if ( $@ ) {
\&    # operation timed\-out
\&  }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \f(CW\*(C`Time::Out\*(C'\fR module provides an easy interface to \fBalarm\fR\|(2) based timeouts.
Nested timeouts are supported. The module exports the \f(CW\*(C`timeout()\*(C'\fR function by
default. The function returns whatever the code placed inside the subroutine
reference returns:
.PP
.Vb 1
\&  use Time::Out qw( timeout );
\&
\&  my $result = timeout 5 => sub {
\&    return 7;
\&  };
\&  # $result == 7
.Ve
.PP
If \f(CW\*(C`Time::Out\*(C'\fR sees that Time::HiRes has been loaded, it will use that
\&\f(CW\*(C`alarm()\*(C'\fR function (if available) instead of the default one, allowing float
timeout values to be used effectively:
.PP
.Vb 2
\&  use Time::HiRes qw();
\&  use Time::Out   qw( timeout );
\&
\&  timeout 3.1416 => sub {
\&    # ...
\&  };
.Ve
.SH "CAVEATS"
.IX Header "CAVEATS"
.IP "Blocking I/O on MSWin32" 2
.IX Item "Blocking I/O on MSWin32"
\&\fBalarm\fR\|(2) doesn't interrupt blocking I/O on MSWin32, so \f(CW\*(C`timeout()\*(C'\fR won't do
that either.
.ie n .IP "@_" 2
.el .IP "\f(CW@_\fR" 2
.IX Item "@_"
One drawback to using \f(CW\*(C`timeout()\*(C'\fR is that it masks \f(CW@_\fR in the affected
code.  This happens because the affected code is actually wrapped inside
another subroutine that provides it's own \f(CW@_\fR. You can get around this by
specifically passing your \f(CW@_\fR (or whatever you want for that matter) to
\&\f(CW\*(C`timeout()\*(C'\fR as such:
.Sp
.Vb 1
\&  use Time::Out qw( timeout );
\&
\&  sub foo {
\&    timeout 5, @_ => sub {
\&      @_;
\&    };
\&  }
\&  my @result = foo( 42, "Hello, World!" );
\&  # @result == ( 42, "Hello, World!" );
.Ve
.IP "Eval inside timeout" 2
.IX Item "Eval inside timeout"
If the affected code has its own exception handling using Try::Tiny for
example, the catch block has to be amended in a way so that it will rethrow an
exception, if it refers to a timeout:
.Sp
.Vb 3
\&  use Scalar::Util qw( blessed  );
\&  use Time::Out    qw( timeout );
\&  use Try::Tiny    qw( catch try );
\&
\&  timeout 5, sub {
\&    try {
\&      select( undef, undef, undef, 7 );
\&      die "bad\en";
\&    } catch {
\&      # rethrow exception, if it refers to a timeout
\&      die $_ if blessed $_ && $_\->isa( \*(AqTime::Out::Exception\*(Aq );
\&      # handle all other exceptions
\&    }
\&  };
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBalarm\fR\|(2), Sys::AlarmCall
.SH "AUTHORS"
.IX Header "AUTHORS"
Sven Willenbuecher, <sven.willenbuecher@gmx.de>
.PP
Patrick LeBoutillier, <patl@cpan.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2005\-2008 Patrick LeBoutillier, 2023 by Sven
Willenbuecher.
.PP
This is free software; you can redistribute it and/or modify it under the same
terms as the Perl 5 programming language system itself.