# Copyright (C) 2020 all contributors # License: AGPL-3.0+ # Used by public-inbox-watch for Maildir (and possibly MH in the future) package PublicInbox::DirIdle; use strict; use parent 'PublicInbox::DS'; 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 = bless { cb => $cb }, $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 $inot->watch($_, $MAIL_IN) for @$dirs; $self->{inot} = $inot; PublicInbox::FakeInotify::poll_once($self) if !$ino_cls; $self; } sub event_step { my ($self) = @_; my $cb = $self->{cb}; local $PublicInbox::DS::in_loop = 0; # waitpid() synchronously eval { my @events = $self->{inot}->read; # Linux::Inotify2->read $cb->($_) for @events; }; warn "$self->{inot}->read err: $@\n" if $@; } 1;