/usr/share/perl5/Mojo/Reactor/EV.pm is in libmojolicious-perl 7.59+dfsg-1ubuntu1.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | package Mojo::Reactor::EV;
use Mojo::Base 'Mojo::Reactor::Poll';
use Carp 'croak';
use EV 4.0;
my $EV;
sub DESTROY { undef $EV }
sub again {
croak 'Timer not active' unless my $timer = shift->{timers}{shift()};
$timer->{watcher}->again;
}
sub is_running { !!EV::depth }
# We have to fall back to Mojo::Reactor::Poll, since EV is unique
sub new { $EV++ ? Mojo::Reactor::Poll->new : shift->SUPER::new }
sub one_tick { EV::run(EV::RUN_ONCE) }
sub recurring { shift->_timer(1, @_) }
sub start {EV::run}
sub stop { EV::break(EV::BREAK_ALL) }
sub timer { shift->_timer(0, @_) }
sub watch {
my ($self, $handle, $read, $write) = @_;
my $fd = fileno $handle;
croak 'I/O watcher not active' unless my $io = $self->{io}{$fd};
my $mode = 0;
$mode |= EV::READ if $read;
$mode |= EV::WRITE if $write;
if ($mode == 0) { delete $io->{watcher} }
elsif (my $w = $io->{watcher}) { $w->events($mode) }
else {
my $cb = sub {
my ($w, $revents) = @_;
$self->_try('I/O watcher', $self->{io}{$fd}{cb}, 0)
if EV::READ & $revents;
$self->_try('I/O watcher', $self->{io}{$fd}{cb}, 1)
if EV::WRITE & $revents && $self->{io}{$fd};
};
$io->{watcher} = EV::io($fd, $mode, $cb);
}
return $self;
}
sub _timer {
my ($self, $recurring, $after, $cb) = @_;
$after ||= 0.0001 if $recurring;
my $id = $self->_id;
my $wrapper = sub {
delete $self->{timers}{$id} unless $recurring;
$self->_try('Timer', $cb);
};
EV::now_update() if $after > 0;
$self->{timers}{$id}{watcher} = EV::timer($after, $after, $wrapper);
return $id;
}
1;
=encoding utf8
=head1 NAME
Mojo::Reactor::EV - Low-level event reactor with libev support
=head1 SYNOPSIS
use Mojo::Reactor::EV;
# Watch if handle becomes readable or writable
my $reactor = Mojo::Reactor::EV->new;
$reactor->io($first => sub {
my ($reactor, $writable) = @_;
say $writable ? 'First handle is writable' : 'First handle is readable';
});
# Change to watching only if handle becomes writable
$reactor->watch($first, 0, 1);
# Turn file descriptor into handle and watch if it becomes readable
my $second = IO::Handle->new_from_fd($fd, 'r');
$reactor->io($second => sub {
my ($reactor, $writable) = @_;
say $writable ? 'Second handle is writable' : 'Second handle is readable';
})->watch($second, 1, 0);
# Add a timer
$reactor->timer(15 => sub {
my $reactor = shift;
$reactor->remove($first);
$reactor->remove($second);
say 'Timeout!';
});
# Start reactor if necessary
$reactor->start unless $reactor->is_running;
=head1 DESCRIPTION
L<Mojo::Reactor::EV> is a low-level event reactor based on L<EV> (4.0+).
=head1 EVENTS
L<Mojo::Reactor::EV> inherits all events from L<Mojo::Reactor::Poll>.
=head1 METHODS
L<Mojo::Reactor::EV> inherits all methods from L<Mojo::Reactor::Poll> and
implements the following new ones.
=head2 again
$reactor->again($id);
Restart timer. Note that this method requires an active timer.
=head2 is_running
my $bool = $reactor->is_running;
Check if reactor is running.
=head2 new
my $reactor = Mojo::Reactor::EV->new;
Construct a new L<Mojo::Reactor::EV> object.
=head2 one_tick
$reactor->one_tick;
Run reactor until an event occurs or no events are being watched anymore.
# Don't block longer than 0.5 seconds
my $id = $reactor->timer(0.5 => sub {});
$reactor->one_tick;
$reactor->remove($id);
=head2 recurring
my $id = $reactor->recurring(0.25 => sub {...});
Create a new recurring timer, invoking the callback repeatedly after a given
amount of time in seconds.
=head2 start
$reactor->start;
Start watching for I/O and timer events, this will block until L</"stop"> is
called or no events are being watched anymore.
# Start reactor only if it is not running already
$reactor->start unless $reactor->is_running;
=head2 stop
$reactor->stop;
Stop watching for I/O and timer events.
=head2 timer
my $id = $reactor->timer(0.5 => sub {...});
Create a new timer, invoking the callback after a given amount of time in
seconds.
=head2 watch
$reactor = $reactor->watch($handle, $readable, $writable);
Change I/O events to watch handle for with true and false values. Note that
this method requires an active I/O watcher.
# Watch only for readable events
$reactor->watch($handle, 1, 0);
# Watch only for writable events
$reactor->watch($handle, 0, 1);
# Watch for readable and writable events
$reactor->watch($handle, 1, 1);
# Pause watching for events
$reactor->watch($handle, 0, 0);
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicious.org>.
=cut
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