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MEDIUM: kqueue: only set FD_POLL_IN when there are pending data

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Let's avoid setting FD_POLL_IN when there's no pending data. It will
save a useless recv() syscall on pure closes.
This commit is contained in:
Willy Tarreau 2017-03-13 20:49:56 +01:00
parent 19c4ab97c1
commit fa0617660a
1 changed files with 2 additions and 1 deletions
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3
src/ev_kqueue.c
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@ -125,7 +125,8 @@ REGPRM2 static void _do_poll(struct poller *p, int exp)
fdtab[fd].ev &= FD_POLL_STICKY; fdtab[fd].ev &= FD_POLL_STICKY;
if (kev[count].filter == EVFILT_READ) { 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) if (kev[count].flags & EV_EOF)
fdtab[fd].ev |= FD_POLL_HUP; fdtab[fd].ev |= FD_POLL_HUP;
} }