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41 lines
1.6 KiB
C
41 lines
1.6 KiB
C
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/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <errno.h>
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#include <sys/resource.h>
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#include <sys/sysmp.h>
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/* Return the highest priority of any process specified by WHICH and WHO
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(see <sys/resource.h>); if WHO is zero, the current process, process group,
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or user (as specified by WHO) is used. A lower priority number means higher
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priority. Priorities range from PRIO_MIN to PRIO_MAX. */
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int
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DEFUN(setpriority, (which, who, prio),
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enum __priority_which which AND int who AND int prio)
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{
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if(which == PRIO_PROCESS)
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return(sysmp(MP_SCHED, MPTS_GTNICE_PROC, who, prio));
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else if(which == PRIO_PGRP)
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return(sysmp(MP_SCHED, MPTS_GTNICE_PGRP, who, prio));
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else if(which == PRIO_USER)
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return(sysmp(MP_SCHED, MPTS_GTNICE_USER, who, prio));
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errno = EINVAL;
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return -1;
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}
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