diff options
Diffstat (limited to 'share/man')
| -rw-r--r-- | share/man/man9/tsleep.9 | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/share/man/man9/tsleep.9 b/share/man/man9/tsleep.9 index 391421e86a2..be5cf84d18d 100644 --- a/share/man/man9/tsleep.9 +++ b/share/man/man9/tsleep.9 @@ -1,4 +1,4 @@ -.\" $OpenBSD: tsleep.9,v 1.10 2015/09/14 15:14:55 schwarze Exp $ +.\" $OpenBSD: tsleep.9,v 1.11 2016/09/13 08:32:44 mpi Exp $ .\" $NetBSD: sleep.9,v 1.11 1999/03/24 06:15:12 mycroft Exp $ .\" .\" Copyright (c) 1996 The NetBSD Foundation, Inc. @@ -28,12 +28,13 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: September 14 2015 $ +.Dd $Mdocdate: September 13 2016 $ .Dt TSLEEP 9 .Os .Sh NAME .Nm tsleep , .Nm msleep , +.Nm rwsleep , .Nm wakeup , .Nm wakeup_n , .Nm wakeup_one @@ -45,6 +46,8 @@ .Fn tsleep "void *ident" "int priority" "const char *wmesg" "int timo" .Ft int .Fn msleep "void *ident" "struct mutex *mtx" "int priority" "const char *wmesg" "int timo" +.Ft int +.Fn rwsleep "void *ident" "struct rwlock *wl" "int priority" "const char *wmesg" "int timo" .Ft void .Fn wakeup "void *ident" .Ft void @@ -53,9 +56,10 @@ .Fn wakeup_one "void *ident" .Sh DESCRIPTION These functions implement voluntary context switching. -.Fn tsleep -and +.Fn tsleep , .Fn msleep +and +.Fn rwsleep are used throughout the kernel whenever processing in the current context cannot continue for any of the following reasons: .Bl -bullet -offset indent @@ -146,6 +150,22 @@ argument. .El .Pp The +.Fn rwsleep +function behaves just like +.Fn tsleep , +but takes an additional argument: +.Bl -tag -width priority +.It Fa wl +A write lock that will be unlocked when the process is safely +on the sleep queue. +The write lock will be relocked at the end of rwsleep unless the +.Dv PNORELOCK +flag is set in the +.Fa priority +argument. +.El +.Pp +The .Fn wakeup function will mark all processes which are currently sleeping on the identifier .Fa ident @@ -173,9 +193,10 @@ except that only .Fa count or one process, respectively, is marked runnable. .Sh RETURN VALUES -.Fn tsleep -and +.Fn tsleep , .Fn msleep +and +.Fn rwsleep return 0 if they return as a result of a .Fn wakeup . If they return as a result of a signal, the return value is |