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.\" Copyright (c) 1980, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)getpriority.2 6.9 (Berkeley) 3/10/91
.\"
.\" Modified Sat Jul 24 16:33:19 1993 by Rik Faith <faith@cs.unc.edu>
.\" Modified Mon Jul 1 21:59:57 1996 by Andries Brouwer <aeb@cwi.nl>
.\" Modified Wed Nov 6 03:55:47 1996 by Eric S. Raymond <esr@thyrsus.com>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\" all rights reserved.
.\" Translated Sat Feb 22 20:36:22 JST 1997
.\" by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.\"WORD: scheduling 塼
.\"WORD: piority ͥ
.\"WORD: call
.\"WORD: user-ID 桼ID
.\"WORD: process ץ
.\"WORD: user 桼
.\"WORD: super user ѡ桼
.\"WORD: effective user-ID ¸桼ID
.\"WORD: real user-ID ¥桼ID
.\"
.TH GETPRIORITY 2 "24 July 1993" "BSD Man Page" "Linux Programmer's Manual"
.SH ̾
getpriority, setpriority \- ץΥ塼ͥ٤/ꤹ
.SH
.B #include <sys/time.h>
.br
.B #include <sys/resource.h>
.sp
.BI "int getpriority(int " which ", int " who );
.br
.BI "int setpriority(int " which ", int " who ", int " prio );
.SH
.I which
.I who
ǻꤵ줿ץץ롼ס桼
塼(scheduling)ͥ(priority)
.B getpriority
ϼ
.B setpriority
ꤹ롣
.I which
.BR PRIO_PROCESS ,
.BR PRIO_PGRP ,
.BR PRIO_USER ,
Τɤ줫Ĥǡ
.I who
.I which
˴Ϣ롣
(
.BR PRIO_PROCESS
Ǥϥץꤹ롢
.BR PRIO_PGRP
Ǥϥץ롼פꤹ롢
.BR PRIO_USER
Ǥϥ桼 ID ꤹ)
.I who
ʤСƤӽФץץ롼ס桼
̣롣
.I prio
\-20 20 ϰϤͤǡǥեȤͥ٤ 0 Ǥ;
ʿۤɡͭʥ塼Ȥʤ롣
.B getpriority
ϻꤷץΤʤκǤ⤤ͥ(ŪˤϺǾ)֤
.B setpriority
ϻꤷץƤͥ٤ꤷͤꤹ롣
ѡ桼Τߤ㤤ͤǤ롣
.SH ֤
.B getpriority
ˤ \-1 ֤ͤǽΤǡ
ƤӽФ˳ѿ
.I errno
ꥢƤӽФθ֤ͤ \-1 ͤ
顼Ƚ̤ɬפ롣
顼ʤ
.B setpriority
0 ֤顼 \-1 ֤
.SH 顼
.TP
.B ESRCH
.I which
.I who
ǻꤵ줿ץ¸ߤʤ
.TP
.B EINVAL
.I which
.BR PRIO_PROCESS ,
.BR PRIO_PGRP ,
.BR PRIO_USER
Τɤ줫Ǥʤ
.PP
嵭ΤΤ˲ä
.B setpriority
ǤϰʲΥ顼:
.TP
.B EPERM
ץϸĤäμ¸(effective)桼IDޤ
(real)桼ID ƤӽФԤμ¸桼ID Ȱפʤ
.TP
.B EACCES
ѡ桼ʳץˤ㤤ͥͿ褦Ȥ
.SH
SVr4, 4.4BSD (δؿ BSD 4.2 ǻϤ˸줿).
.SH Ϣ
.BR nice (1),
.BR fork (2),
.BR renice (8)
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