diff options
Diffstat (limited to 'lib/libc/gen/nice.3')
| -rw-r--r-- | lib/libc/gen/nice.3 | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/lib/libc/gen/nice.3 b/lib/libc/gen/nice.3 index 3bad5f77d6a9..8ce13af9d974 100644 --- a/lib/libc/gen/nice.3 +++ b/lib/libc/gen/nice.3 @@ -28,7 +28,7 @@ .\" @(#)nice.3 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd February 22, 2015 +.Dd February 28, 2015 .Dt NICE 3 .Os .Sh NAME @@ -48,9 +48,9 @@ This interface is obsoleted by .Pp The .Fn nice -function obtains the scheduling priority of the process -from the system and sets it to the priority value specified in -.Fa incr . +function adds +.Fa incr +to the scheduling priority of the process. The priority is a value in the range -20 to 20. The default priority is 0; lower priorities cause more favorable scheduling. Only the super-user may lower priorities. @@ -60,8 +60,9 @@ Children inherit the priority of their parent processes via .Sh RETURN VALUES Upon successful completion, .Fn nice -returns the new nice value minus -.Dv NZERO . +returns 0, and +.Va errno +is unchanged. Otherwise, \-1 is returned, the process' nice value is not changed, and .Va errno is set to indicate the error. @@ -84,7 +85,11 @@ argument is negative and the caller does not have appropriate privileges. The .Fn nice function conforms to -.St -xpg4.2 . +.St -p1003.1-2008 +except for the return value. +This implementation returns 0 upon successful completion but +the standard requires returning the new nice value, +which could be \-1. .Sh HISTORY A .Fn nice |