diff options
| author | Shehjar Tikoo <shehjart@gluster.com> | 2009-06-10 01:25:38 +0000 |
|---|---|---|
| committer | Anand V. Avati <avati@dev.gluster.com> | 2009-06-11 06:29:17 -0700 |
| commit | 1c4d58fe57162a5247356dc95aa6204f26cbf4fe (patch) | |
| tree | ec76072bc37f4d91baac23c0ec1aad7efb9dc1cc /xlators/performance/io-threads/src/io-threads.c | |
| parent | bd2b529fd3d1965ccfe8cc03f9223ed1e98f7e79 (diff) | |
io-threads: Fix missed notification in sem_timedwait
We're performing a calculation for skewing idle time
that resulted in a timespec.tv_nsec value becoming larger than
1000 million or less than 0, forcing sem_timedwait to return
with an EINVAL instead of waiting for a request notification
from sem_post in iot_notify_worker(). This resulted in a missed
notification that resulted in a hang followed by a timeout
on the protocol/client side.
This commit avoids the over- and under-flow in tv_nsec by
skewing the tv_sec value instead.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
Diffstat (limited to 'xlators/performance/io-threads/src/io-threads.c')
| -rw-r--r-- | xlators/performance/io-threads/src/io-threads.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/xlators/performance/io-threads/src/io-threads.c b/xlators/performance/io-threads/src/io-threads.c index f16833609..c3575654b 100644 --- a/xlators/performance/io-threads/src/io-threads.c +++ b/xlators/performance/io-threads/src/io-threads.c @@ -79,16 +79,15 @@ int iot_notify_wait (iot_worker_t *worker, int idletime) { struct timeval tv; - struct timespec ts; + struct timespec ts = {0, }; int waitres = 0; gettimeofday (&tv, NULL); - ts.tv_sec = tv.tv_sec + idletime; /* Slightly skew the idle time for threads so that, we dont * have all of them rushing to exit at the same time, if * they've been idle. */ - ts.tv_nsec = skew_usec_idle_time (tv.tv_usec) * 1000; + ts.tv_sec = skew_sec_idle_time (tv.tv_sec + idletime); #ifndef HAVE_SPINLOCK waitres = pthread_cond_timedwait (&worker->notifier, &worker->qlock, |