httpd|nntpd: avoid missed signal wakeups

[public-inbox.git] / t / sigfd.t

diff --git a/t/sigfd.t b/t/sigfd.t
new file mode 100644 (file)
index 0000000..34f30de
--- /dev/null
+++ b/t/sigfd.t
@@ -0,0 +1,65 @@
+# Copyright (C) 2019 all contributors <meta@public-inbox.org>
+use strict;
+use Test::More;
+use IO::Handle;
+use POSIX qw(:signal_h);
+use Errno qw(ENOSYS);
+use PublicInbox::Syscall qw(SFD_NONBLOCK);
+require_ok 'PublicInbox::Sigfd';
+
+SKIP: {
+       if ($^O ne 'linux' && !eval { require IO::KQueue }) {
+               skip 'signalfd requires Linux or IO::KQueue to emulate', 10;
+       }
+       my $new = POSIX::SigSet->new;
+       $new->fillset or die "sigfillset: $!";
+       my $old = POSIX::SigSet->new;
+       sigprocmask(SIG_SETMASK, $new, $old) or die "sigprocmask $!";
+       my $hit = {};
+       my $sig = {};
+       local $SIG{HUP} = sub { $hit->{HUP}->{normal}++ };
+       local $SIG{TERM} = sub { $hit->{TERM}->{normal}++ };
+       local $SIG{INT} = sub { $hit->{INT}->{normal}++ };
+       for my $s (qw(HUP TERM INT)) {
+               $sig->{$s} = sub { $hit->{$s}->{sigfd}++ };
+       }
+       my $sigfd = PublicInbox::Sigfd->new($sig, 0);
+       if ($sigfd) {
+               require PublicInbox::DS;
+               ok($sigfd, 'Sigfd->new works');
+               kill('HUP', $$) or die "kill $!";
+               kill('INT', $$) or die "kill $!";
+               my $fd = fileno($sigfd->{sock});
+               ok($fd >= 0, 'fileno(Sigfd->{sock}) works');
+               my $rvec = '';
+               vec($rvec, $fd, 1) = 1;
+               is(select($rvec, undef, undef, undef), 1, 'select() works');
+               ok($sigfd->wait_once, 'wait_once reported success');
+               for my $s (qw(HUP INT)) {
+                       is($hit->{$s}->{sigfd}, 1, "sigfd fired $s");
+                       is($hit->{$s}->{normal}, undef,
+                               'normal $SIG{$s} not fired');
+               }
+               $sigfd = undef;
+
+               my $nbsig = PublicInbox::Sigfd->new($sig, SFD_NONBLOCK);
+               ok($nbsig, 'Sigfd->new SFD_NONBLOCK works');
+               is($nbsig->wait_once, undef, 'nonblocking ->wait_once');
+               ok($! == Errno::EAGAIN, 'got EAGAIN');
+               kill('HUP', $$) or die "kill $!";
+               PublicInbox::DS->SetPostLoopCallback(sub {}); # loop once
+               PublicInbox::DS->EventLoop;
+               is($hit->{HUP}->{sigfd}, 2, 'HUP sigfd fired in event loop');
+               kill('TERM', $$) or die "kill $!";
+               kill('HUP', $$) or die "kill $!";
+               PublicInbox::DS->EventLoop;
+               PublicInbox::DS->Reset;
+               is($hit->{TERM}->{sigfd}, 1, 'TERM sigfd fired in event loop');
+               is($hit->{HUP}->{sigfd}, 3, 'HUP sigfd fired in event loop');
+       } else {
+               skip('signalfd disabled?', 10);
+       }
+       sigprocmask(SIG_SETMASK, $old) or die "sigprocmask $!";
+}
+
+done_testing;