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 $ino_cls = 'Linux::Inotify2';
16 # Perl 5.22+ is needed for fileno(DIRHANDLE) support:
17 } elsif ($^V ge v5.22 && eval { require PublicInbox::KQNotify }) {
18 $MAIL_IN = PublicInbox::KQNotify::MOVED_TO_OR_CREATE();
19 $ino_cls = 'PublicInbox::KQNotify';
21 require PublicInbox::FakeInotify;
22 $MAIL_IN = PublicInbox::FakeInotify::MOVED_TO_OR_CREATE();
26 my ($class, $dirs, $cb) = @_;
27 my $self = bless { cb => $cb }, $class;
30 $inot = $ino_cls->new or die "E: $ino_cls->new: $!";
31 my $io = PublicInbox::In2Tie::io($inot);
32 $self->SUPER::new($io, EPOLLIN | EPOLLET);
34 require PublicInbox::FakeInotify;
35 $inot = PublicInbox::FakeInotify->new; # starts timer
38 # Linux::Inotify2->watch or similar
39 $inot->watch($_, $MAIL_IN) for @$dirs;
40 $self->{inot} = $inot;
41 PublicInbox::FakeInotify::poll_once($self) if !$ino_cls;
48 local $PublicInbox::DS::in_loop = 0; # waitpid() synchronously
50 my @events = $self->{inot}->read; # Linux::Inotify2->read
51 $cb->($_) for @events;
53 warn "$self->{inot}->read err: $@\n" if $@;