MEDIUM: kqueue: only set FD_POLL_IN when there are pending data
Let's avoid setting FD_POLL_IN when there's no pending data. It will
save a useless recv() syscall on pure closes.
diff --git a/src/ev_kqueue.c b/src/ev_kqueue.c
index 6f41c73..f1c0b8d 100644
--- a/src/ev_kqueue.c
+++ b/src/ev_kqueue.c
@@ -125,7 +125,8 @@
fdtab[fd].ev &= FD_POLL_STICKY;
if (kev[count].filter == EVFILT_READ) {
- fdtab[fd].ev |= FD_POLL_IN;
+ if (kev[count].data)
+ fdtab[fd].ev |= FD_POLL_IN;
if (kev[count].flags & EV_EOF)
fdtab[fd].ev |= FD_POLL_HUP;
}