listener: use edge-triggered notifications

[public-inbox.git] / lib / PublicInbox / DSKQXS.pm

diff --git a/lib/PublicInbox/DSKQXS.pm b/lib/PublicInbox/DSKQXS.pm
index 38e13446888ea893ec88f8091e6d1a156c460604..278d3f887508509881089294683308e69883581b 100644 (file)
--- a/lib/PublicInbox/DSKQXS.pm
+++ b/lib/PublicInbox/DSKQXS.pm
@@ -16,8 +16,9 @@ use warnings;
 use parent qw(IO::KQueue);
 use parent qw(Exporter);
 use IO::KQueue;
-use PublicInbox::Syscall qw(EPOLLONESHOT EPOLLIN EPOLLOUT EPOLL_CTL_DEL);
-our @EXPORT = qw(epoll_ctl epoll_wait);
+use PublicInbox::Syscall qw(EPOLLONESHOT EPOLLIN EPOLLOUT EPOLLET
+       EPOLL_CTL_DEL);
+our @EXPORT_OK = qw(epoll_ctl epoll_wait);
 my $owner_pid = -1; # kqueue is close-on-fork (yes, fork, not exec)
 
 # map EPOLL* bits to kqueue EV_* flags for EV_SET
@@ -25,6 +26,7 @@ sub kq_flag ($$) {
        my ($bit, $ev) = @_;
        if ($ev & $bit) {
                my $fl = EV_ADD | EV_ENABLE;
+               $fl |= EV_CLEAR if $fl & EPOLLET;
                ($ev & EPOLLONESHOT) ? ($fl | EV_ONESHOT) : $fl;
        } else {
                EV_ADD | EV_DISABLE;