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| author | Konstantin Belousov <kib@FreeBSD.org> | 2009-12-12 22:08:37 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2009-12-12 22:08:37 +0000 |
| commit | ec897c886dc96978d01d9e1c04071eb988024cae (patch) | |
| tree | db39cf28234253ddef5a10c94b6fcaf8d60227a2 /share | |
| parent | 4576bbe23390b994369bb0755143954e521f5c18 (diff) | |
| download | src-ec897c886dc96978d01d9e1c04071eb988024cae.tar.gz src-ec897c886dc96978d01d9e1c04071eb988024cae.zip | |
Document PBDRY and SLEEPQ_STOP_ON_BDRY.
Requested and reviewed by: attilio
MFC after: 3 days
Notes
Notes:
svn path=/head/; revision=200450
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man9/sleep.9 | 14 | ||||
| -rw-r--r-- | share/man/man9/sleepqueue.9 | 11 |
2 files changed, 22 insertions, 3 deletions
diff --git a/share/man/man9/sleep.9 b/share/man/man9/sleep.9 index a9f087351510..8fb7f88a3200 100644 --- a/share/man/man9/sleep.9 +++ b/share/man/man9/sleep.9 @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd April 4, 2008 +.Dd December 12, 2009 .Os .Dt SLEEP 9 .Sh NAME @@ -97,6 +97,7 @@ when it resumes. should never be used, as it is for compatibility only. A new priority of 0 means to use the thread's current priority when it is made runnable again. +.Pp If .Fa priority includes the @@ -113,6 +114,17 @@ possible, and is returned if the system call should be interrupted by the signal (return .Er EINTR ) . +If +.Dv PBDRY +flag is specified in addition to +.Dv PCATCH , +then the sleeping thread is not stopped while sleeping upon delivery of +.Dv SIGSTOP +or other stop action. +Instead, it is waken up, assuming that stop occurs on reaching a stop +point when returning to usermode. +The flag should be used when sleeping thread owns resources, for instance +vnode locks, that should be freed timely. .Pp The parameter .Fa wmesg diff --git a/share/man/man9/sleepqueue.9 b/share/man/man9/sleepqueue.9 index bc5acf860720..36cab6979337 100644 --- a/share/man/man9/sleepqueue.9 +++ b/share/man/man9/sleepqueue.9 @@ -23,7 +23,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 11, 2009 +.Dd December 12, 2009 .Dt SLEEPQUEUE 9 .Os .Sh NAME @@ -198,12 +198,19 @@ A sleep queue used to implement .Xr pause 9 . .El .Pp -There is currently only one optional flag: +There are currently two optional flag: .Pp .Bl -tag -width ".Dv SLEEPQ_INTERRUPTIBLE" -compact .It Dv SLEEPQ_INTERRUPTIBLE The current thread is entering an interruptible sleep. .El +.Bl -tag -width ".Dv SLEEPQ_STOP_ON_BDRY" -compact +.It Dv SLEEPQ_STOP_ON_BDRY +When thread is entering an interruptible sleep, do not stop it upon +arrival of stop action, like +.Dv SIGSTOP . +Wake it up instead. +.El .Pp A timeout on the sleep may be specified by calling .Fn sleepq_set_timeout |