/usr/lib/perl5/Event/Watcher.pm is in libevent-perl 1.21-1build1.
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 | use strict;
package Event::Watcher;
use base 'Exporter';
use Carp;
use vars qw(@EXPORT_OK @ATTRIBUTE);
@EXPORT_OK = qw(ACTIVE SUSPEND R W E T);
@ATTRIBUTE = qw(cb cbtime desc debug prio reentrant repeat max_cb_tm);
sub register {
no strict 'refs';
my $package = caller;
my $name = $package;
$name =~ s/^.*:://;
my $sub = \&{"$package\::new"};
die "can't find $package\::new"
if !$sub;
*{"Event::".$name} = sub {
shift;
$sub->("Event::".$name, @_);
};
&Event::add_hooks if @_;
}
my $warn_noise = 10;
sub init {
croak "Event::Watcher::init wants 2 args" if @_ != 2;
my ($o, $arg) = @_;
for my $k (keys %$arg) {
if ($k =~ s/^e_//) {
Carp::cluck "'e_$k' is renamed to '$k'"
if --$warn_noise >= 0;
$arg->{$k} = delete $arg->{"e_$k"};
}
}
if (!exists $arg->{desc}) {
# try to find caller but cope with optimized-away frames & etc
for my $up (1..4) {
my @fr = caller $up;
next if !@fr || $fr[0] =~ m/^Event\b/;
my ($file,$line) = @fr[1,2];
$file =~ s,^.*/,,;
$o->desc("?? $file:$line");
last;
}
}
# set up prio
{
no strict 'refs';
$o->prio($ { ref($o)."::DefaultPriority" } || Event::PRIO_NORMAL);
if (exists $arg->{nice}) {
$o->prio($o->prio + delete $arg->{nice});
}
}
$o->prio(-1)
if delete $arg->{async};
$o->prio(delete $arg->{prio})
if exists $arg->{prio};
# is parked?
my $parked = delete $arg->{parked};
for my $k (keys %$arg) {
my $m = $k;
if ($o->can($m)) {
$o->$m($arg->{$k});
next;
}
}
Carp::cluck "creating ".ref($o)." desc='".$o->desc."'\n"
if $Event::DebugLevel >= 3;
$o->start unless $parked;
$o;
}
sub attributes {
no strict 'refs';
my ($o) = @_;
my $pk = ref $o? ref $o : $o;
@{"$ {pk}::ATTRIBUTE"}, map { attributes($_) } @{"$ {pk}::ISA"};
}
sub configure {
my $o = shift;
if (! @_) {
map { $_, $o->$_() } $o->attributes;
} else {
while (my ($k,$v)= splice @_, -2) { $o->$k($v)}
1 # whatever
}
}
sub private { # assumes $self is a HASH ref
my $self = shift;
my $pkg = caller;
if (@_) {
$self->{$pkg} = shift
} else {
$self->{$pkg};
}
}
sub data { # assumes $self is a HASH ref
my $self = shift;
if (@_) {
$self->{_user_data_} = shift
} else {
$self->{_user_data_};
}
}
sub clump {
require Carp;
Carp::cluck "clump is deprecated";
}
package Event::Watcher::Tied;
use vars qw(@ISA @ATTRIBUTE);
@ISA = 'Event::Watcher';
@ATTRIBUTE = qw(hard at flags);
1;
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