X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FDirIdle.pm;fp=lib%2FPublicInbox%2FDirIdle.pm;h=ffceda66530b73d9a75abf162b60faaea565f0a5;hb=b2b1006759730507731fcd3fc3e0de68239e3b92;hp=0000000000000000000000000000000000000000;hpb=5808636263d72b635a46100a7e7037074dad8f75;p=public-inbox.git

diff --git a/lib/PublicInbox/DirIdle.pm b/lib/PublicInbox/DirIdle.pm
new file mode 100644
index 00000000..ffceda66
--- /dev/null
+++ b/lib/PublicInbox/DirIdle.pm
@@ -0,0 +1,50 @@
+# Copyright (C) 2020 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# Used by public-inbox-watch for Maildir (and possibly MH in the future)
+package PublicInbox::DirIdle;
+use strict;
+use base 'PublicInbox::DS';
+use fields qw(inot);
+use PublicInbox::Syscall qw(EPOLLIN EPOLLET);
+use PublicInbox::In2Tie;
+
+my ($MAIL_IN, $ino_cls);
+if ($^O eq 'linux' && eval { require Linux::Inotify2; 1 }) {
+	$MAIL_IN = Linux::Inotify2::IN_MOVED_TO() |
+		Linux::Inotify2::IN_CREATE();
+	$ino_cls = 'Linux::Inotify2';
+} elsif (eval { require PublicInbox::KQNotify }) {
+	$MAIL_IN = PublicInbox::KQNotify::MOVED_TO_OR_CREATE();
+	$ino_cls = 'PublicInbox::KQNotify';
+} else {
+	require PublicInbox::FakeInotify;
+	$MAIL_IN = PublicInbox::FakeInotify::MOVED_TO_OR_CREATE();
+}
+
+sub new {
+	my ($class, $dirs, $cb) = @_;
+	my $self = fields::new($class);
+	my $inot;
+	if ($ino_cls) {
+		$inot = $ino_cls->new or die "E: $ino_cls->new: $!";
+		my $io = PublicInbox::In2Tie::io($inot);
+		$self->SUPER::new($io, EPOLLIN | EPOLLET);
+	} else {
+		require PublicInbox::FakeInotify;
+		$inot = PublicInbox::FakeInotify->new; # starts timer
+	}
+
+	# Linux::Inotify2->watch or similar
+	$inot->watch($_, $MAIL_IN, $cb) for @$dirs;
+	$self->{inot} = $inot;
+	$self;
+}
+
+sub event_step {
+	my ($self) = @_;
+	eval { $self->{inot}->poll }; # Linux::Inotify2::poll
+	warn "$self->{inot}->poll err: $@\n" if $@;
+}
+
+1;