diff options
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man9/sleep.9 | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/share/man/man9/sleep.9 b/share/man/man9/sleep.9 index 89b22b1..8fd7af0 100644 --- a/share/man/man9/sleep.9 +++ b/share/man/man9/sleep.9 @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd February 23, 2007 +.Dd February 27, 2007 .Os .Dt SLEEP 9 .Sh NAME @@ -99,11 +99,16 @@ runnable. .Pp The .Fn wakeup_one -function -does not work reliably if more than one thread is sleeping on the same address; -in this case it is possible for an unrelated thread to be woken. -This thread will ignore the wakeup, and the correct process will never be -woken. +function does not work reliably if unrelated threads are sleeping on the same +address. +In this case, if a wakeup for one group of threads is delivered to a member of +another group, that thread will ignore the wakeup, and the correct thread will +never be woken up. +It is the programmer's responsibility to choose a unique +.Fa chan +value. +In case of doubt, do not use +.Fn wakeup_one . .Pp The .Fn msleep @@ -234,6 +239,10 @@ and added the parameters and .Fa timo . The +.Fn sleep +function was removed in +.Fx 2.2 . +The .Fn wakeup_one function appeared in .Fx 2.2 . |
