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authorKonstantin Belousov <kib@FreeBSD.org>2008-05-24 03:36:19 +0000
committerKonstantin Belousov <kib@FreeBSD.org>2008-05-24 03:36:19 +0000
commitfbcceb5846b6053012a1ad6eb3d872a8d9a6fa7b (patch)
tree3f5f2079258308ef864a512e42c774197f5640c3
parent884b9f1af04d8936d8dbd958020638cb6c9ace1f (diff)
Notes
-rw-r--r--sys/kern/kern_event.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/kern/kern_event.c b/sys/kern/kern_event.c
index f5691439235b..9bba414bf095 100644
--- a/sys/kern/kern_event.c
+++ b/sys/kern/kern_event.c
@@ -1144,7 +1144,7 @@ kqueue_scan(struct kqueue *kq, int maxevents, struct kevent_copyops *k_ops,
struct kevent *kevp;
struct timeval atv, rtv, ttv;
struct knote *kn, *marker;
- int count, timeout, nkev, error;
+ int count, timeout, nkev, error, influx;
int haskqglobal;
count = maxevents;
@@ -1214,6 +1214,7 @@ start:
}
TAILQ_INSERT_TAIL(&kq->kq_head, marker, kn_tqe);
+ influx = 0;
while (count) {
KQ_OWNED(kq);
kn = TAILQ_FIRST(&kq->kq_head);
@@ -1221,6 +1222,11 @@ start:
if ((kn->kn_status == KN_MARKER && kn != marker) ||
(kn->kn_status & KN_INFLUX) == KN_INFLUX) {
kq->kq_state |= KQ_FLUXWAIT;
+ if (influx) {
+ influx = 0;
+ KQ_FLUX_WAKEUP(kq);
+ }
+
error = msleep(kq, &kq->kq_lock, PSOCK,
"kqflxwt", 0);
continue;
@@ -1269,6 +1275,7 @@ start:
~(KN_QUEUED | KN_ACTIVE | KN_INFLUX);
kq->kq_count--;
KN_LIST_UNLOCK(kn);
+ influx = 1;
continue;
}
*kevp = kn->kn_kevent;
@@ -1284,6 +1291,7 @@ start:
kn->kn_status &= ~(KN_INFLUX);
KN_LIST_UNLOCK(kn);
+ influx = 1;
}
/* we are returning a copy to the user */
@@ -1292,6 +1300,7 @@ start:
count--;
if (nkev == KQ_NEVENTS) {
+ influx = 0;
KQ_UNLOCK_FLUX(kq);
error = k_ops->k_copyout(k_ops->arg, keva, nkev);
nkev = 0;