* [PATCH] tail_notify: explicitly detect self deletion
@ 2023-09-08 7:51 Eric Wong
0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2023-09-08 7:51 UTC (permalink / raw)
To: meta
This allows t/tail_notify.t to pass more reliably using
FreeBSD with IO::KQueue.
---
lib/PublicInbox/TailNotify.pm | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/lib/PublicInbox/TailNotify.pm b/lib/PublicInbox/TailNotify.pm
index f4ffb296..bdb92d54 100644
--- a/lib/PublicInbox/TailNotify.pm
+++ b/lib/PublicInbox/TailNotify.pm
@@ -14,12 +14,14 @@ if ($^O eq 'linux' && eval { require PublicInbox::Inotify; 1 }) {
Linux::Inotify2::IN_MODIFY();
$ino_cls = 'PublicInbox::Inotify';
} elsif (eval { require PublicInbox::KQNotify }) {
- $TAIL_MOD = PublicInbox::KQNotify::MOVED_TO_OR_CREATE();
+ $TAIL_MOD = PublicInbox::KQNotify::MOVED_TO_OR_CREATE() |
+ IO::KQueue::NOTE_DELETE() | IO::KQueue::NOTE_RENAME();
$ino_cls = 'PublicInbox::KQNotify';
} else {
require PublicInbox::FakeInotify;
$TAIL_MOD = PublicInbox::FakeInotify::MOVED_TO_OR_CREATE() |
- PublicInbox::FakeInotify::IN_MODIFY();
+ PublicInbox::FakeInotify::IN_MODIFY() |
+ PublicInbox::FakeInotify::IN_DELETE();
}
require IO::Poll if $ino_cls;
@@ -49,6 +51,11 @@ sub new {
$self;
}
+sub delete_self {
+ for (@_) { return 1 if $_->IN_DELETE_SELF }
+ undef;
+}
+
sub getlines {
my ($self, $timeo) = @_;
my ($fh, $buf, $rfds, @ret, @events);
@@ -70,13 +77,12 @@ again:
}
select($rfds, undef, undef, $wait);
}
- # XXX do we care about @events contents?
- # use Data::Dumper; warn '# ',Dumper(\@events);
if ($fh = $self->{watch_fh}) {
sysread($fh, $buf, -s $fh) and
push @ret, split(/^/sm, $buf);
my @st = stat($self->{fn});
- if (!@st || "@st[0, 1]" ne $self->{ino_dev}) {
+ if (!@st || "@st[0, 1]" ne $self->{ino_dev} ||
+ delete_self(@events)) {
delete @$self{qw(ino_dev watch_fh)};
}
}
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2023-09-08 7:51 [PATCH] tail_notify: explicitly detect self deletion Eric Wong
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