listener: EPOLL_CTL_ADD errors are non fatal

EPOLL_CTL_ADD may fail with transient ENOMEM or ENOSPC errors,
so don't tear down the process when that happens.

diff --git a/lib/PublicInbox/Listener.pm b/lib/PublicInbox/Listener.pm
index 928d9301902fdb059ddbd4a2603af92cb6848736..cdfd34a275bc532c4bc71dd3c14485751351d899 100644 (file)
--- a/lib/PublicInbox/Listener.pm
+++ b/lib/PublicInbox/Listener.pm
@@ -40,7 +40,8 @@ sub event_step {
        # on high-traffic sites.
        if (my $addr = accept(my $c, $sock)) {
                IO::Handle::blocking($c, 0); # no accept4 :<
-               $self->{post_accept}->($c, $addr, $sock);
+               eval { $self->{post_accept}->($c, $addr, $sock) };
+               warn "E: $@\n" if $@;
                $self->requeue;
        } elsif ($! == EAGAIN || $! == ECONNABORTED || $! == EPERM) {
                # EAGAIN is common and likely