diff options
Diffstat (limited to 'manual/resource.texi')
| -rw-r--r-- | manual/resource.texi | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/manual/resource.texi b/manual/resource.texi index da30d7cbda..3beb939006 100644 --- a/manual/resource.texi +++ b/manual/resource.texi @@ -1170,7 +1170,7 @@ afterward as the criterion for failure. Set the nice value of a set of processes to @var{niceval}; @var{class} and @var{id} specify which ones (see below). -The return value is the nice value on success, and @code{-1} on +The return value is @code{0} on success, and @code{-1} on failure. The following @code{errno} error condition are possible for this function: @@ -1225,7 +1225,10 @@ process group, or its owner (real uid), according to @var{class}. @comment BSD @deftypefun int nice (int @var{increment}) Increment the nice value of the calling process by @var{increment}. -The return value is the same as for @code{setpriority}. +The return value is the new nice value on success, and @code{-1} on +failure. In the case of failure, @code{errno} will be set to the +same values as for @code{setpriority}. + Here is an equivalent definition of @code{nice}: @@ -1233,8 +1236,12 @@ Here is an equivalent definition of @code{nice}: int nice (int increment) @{ - int old = getpriority (PRIO_PROCESS, 0); - return setpriority (PRIO_PROCESS, 0, old + increment); + int result, old = getpriority (PRIO_PROCESS, 0); + result = setpriority (PRIO_PROCESS, 0, old + increment); + if (result != -1) + return old + increment; + else + return -1; @} @end smallexample @end deftypefun |