1 # Copyright (C) 2020 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # Used by public-inbox-watch for Maildir (and possibly MH in the future)
5 package PublicInbox::DirIdle;
7 use parent 'PublicInbox::DS';
8 use PublicInbox::Syscall qw(EPOLLIN EPOLLET);
9 use PublicInbox::In2Tie;
11 my ($MAIL_IN, $ino_cls);
12 if ($^O eq 'linux' && eval { require Linux::Inotify2; 1 }) {
13 $MAIL_IN = Linux::Inotify2::IN_MOVED_TO() |
14 Linux::Inotify2::IN_CREATE();
15 $ino_cls = 'Linux::Inotify2';
16 } elsif (eval { require PublicInbox::KQNotify }) {
17 $MAIL_IN = PublicInbox::KQNotify::MOVED_TO_OR_CREATE();
18 $ino_cls = 'PublicInbox::KQNotify';
20 require PublicInbox::FakeInotify;
21 $MAIL_IN = PublicInbox::FakeInotify::MOVED_TO_OR_CREATE();
25 my ($class, $dirs, $cb) = @_;
26 my $self = bless { cb => $cb }, $class;
29 $inot = $ino_cls->new or die "E: $ino_cls->new: $!";
30 my $io = PublicInbox::In2Tie::io($inot);
31 $self->SUPER::new($io, EPOLLIN | EPOLLET);
33 require PublicInbox::FakeInotify;
34 $inot = PublicInbox::FakeInotify->new; # starts timer
37 # Linux::Inotify2->watch or similar
38 $inot->watch($_, $MAIL_IN) for @$dirs;
39 $self->{inot} = $inot;
40 PublicInbox::FakeInotify::poll_once($self) if !$ino_cls;
48 my @events = $self->{inot}->read; # Linux::Inotify2->read
49 $cb->($_) for @events;
51 warn "$self->{inot}->read err: $@\n" if $@;