View Source: nice(2) - Waikato Linux Users Group

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!!NAME
nice - change process priority

!!SYNOPSIS
 __#include <unistd.h>__
 __int nice(int__ ''inc''__);__

!!DESCRIPTION
nice(2) adds ''inc'' to the nice value for the calling pid. (A large nice value means a low priority.) Only the super- user may specify a negative increment, or
priority increase.

!!RETURN VALUE
On success, the new nice variable is returned.  On failure -1 is returned.  Since -1 is a valid return for nice(2), set errno(3) to 0 before calling nice(2), and check its value afterwards if nice(2) returns a value of -1.

!!ERRORS
;[EPERM]: A non-super user attempts to do a priority increase by supplying a negative ''inc''.

!!CONFORMING TO
SVr4, SVID EXT, AT

!!NOTES
Older (g)libc (earlier than glibc 2.2.4) return 0 on success, and the new nice value should be found by calling getpriority(2).

!!SEE ALSO
nice(1), getpriority(2), setpriority(2), fork(2), renice(1), sched_getscheduler(2), sched_getparam(2)

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Last edited on Wednesday, June 15, 2005 4:55:16 pm by "SidSwami"

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