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| author | deischen <deischen@FreeBSD.org> | 2006-02-23 21:34:08 +0000 |
|---|---|---|
| committer | deischen <deischen@FreeBSD.org> | 2006-02-23 21:34:08 +0000 |
| commit | 4dd473489ef973f5d3a1b52dd87370ef00097810 (patch) | |
| tree | 8d8078ef7abffc1a5ffc129a3fdf7c191a662be1 /lib/libpthread/thread/thr_nanosleep.c | |
| parent | 2460d0002143524f8e136a911d7eece91b451d90 (diff) | |
| download | FreeBSD-src-4dd473489ef973f5d3a1b52dd87370ef00097810.zip FreeBSD-src-4dd473489ef973f5d3a1b52dd87370ef00097810.tar.gz | |
Eliminate a race condition in timed waits (cv, mutex, and sleeps).
MFC Candidate.
PR: 93592
Diffstat (limited to 'lib/libpthread/thread/thr_nanosleep.c')
| -rw-r--r-- | lib/libpthread/thread/thr_nanosleep.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/libpthread/thread/thr_nanosleep.c b/lib/libpthread/thread/thr_nanosleep.c index e8baa84..5eba37d 100644 --- a/lib/libpthread/thread/thr_nanosleep.c +++ b/lib/libpthread/thread/thr_nanosleep.c @@ -46,6 +46,7 @@ _nanosleep(const struct timespec *time_to_sleep, int ret = 0; struct timespec ts, ts1; struct timespec remaining_time; + struct timespec wakeup_time; /* Check if the time to sleep is legal: */ if ((time_to_sleep == NULL) || (time_to_sleep->tv_sec < 0) || @@ -61,10 +62,11 @@ _nanosleep(const struct timespec *time_to_sleep, KSE_GET_TOD(curthread->kse, &ts); /* Calculate the time for the current thread to wake up: */ - TIMESPEC_ADD(&curthread->wakeup_time, &ts, time_to_sleep); + TIMESPEC_ADD(&wakeup_time, &ts, time_to_sleep); THR_LOCK_SWITCH(curthread); curthread->interrupted = 0; + curthread->wakeup_time = wakeup_time; THR_SET_STATE(curthread, PS_SLEEP_WAIT); /* Reschedule the current thread to sleep: */ |
