projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5b2abdfb | 1 | .\" Copyright (c) 1980, 1991, 1993 |
| e9ce8d39 A |
2 | .\" The Regents of the University of California. All rights reserved. |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms, with or without | |
| 5 | .\" modification, are permitted provided that the following conditions | |
| 6 | .\" are met: | |
| 7 | .\" 1. Redistributions of source code must retain the above copyright | |
| 8 | .\" notice, this list of conditions and the following disclaimer. | |
| 9 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
| 10 | .\" notice, this list of conditions and the following disclaimer in the | |
| 11 | .\" documentation and/or other materials provided with the distribution. | |
| e9ce8d39 A |
12 | .\" 4. Neither the name of the University nor the names of its contributors |
| 13 | .\" may be used to endorse or promote products derived from this software | |
| 14 | .\" without specific prior written permission. | |
| 15 | .\" | |
| 16 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 17 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 20 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 21 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 22 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 23 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 24 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 25 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 26 | .\" SUCH DAMAGE. | |
| 27 | .\" | |
| 5b2abdfb | 28 | .\" @(#)nice.3 8.1 (Berkeley) 6/4/93 |
| 1f2f436a | 29 | .\" $FreeBSD: src/lib/libc/gen/nice.3,v 1.12 2007/01/09 00:27:54 imp Exp $ |
| e9ce8d39 | 30 | .\" |
| 5b2abdfb A |
31 | .Dd June 4, 1993 |
| 32 | .Dt NICE 3 | |
| e9ce8d39 A |
33 | .Os |
| 34 | .Sh NAME | |
| 5b2abdfb A |
35 | .Nm nice |
| 36 | .Nd set program scheduling priority | |
| e9ce8d39 A |
37 | .Sh LIBRARY |
| 38 | .Lb libc | |
| 39 | .Sh SYNOPSIS | |
| 5b2abdfb | 40 | .In unistd.h |
| e9ce8d39 | 41 | .Ft int |
| 5b2abdfb | 42 | .Fn nice "int incr" |
| e9ce8d39 | 43 | .Sh DESCRIPTION |
| 5b2abdfb A |
44 | .Bf -symbolic |
| 45 | This interface is obsoleted by | |
| 46 | .Xr setpriority 2 . | |
| 47 | .Ef | |
| 48 | .Pp | |
| e9ce8d39 | 49 | The |
| 5b2abdfb A |
50 | .Fn nice |
| 51 | function obtains the scheduling priority of the process | |
| 52 | from the system and sets it to the priority value specified in | |
| 53 | .Fa incr . | |
| 54 | The priority is a value in the range -20 to 20. | |
| 55 | The default priority is 0; lower priorities cause more favorable scheduling. | |
| 56 | Only the super-user may lower priorities. | |
| 57 | .Pp | |
| 58 | Children inherit the priority of their parent processes via | |
| 59 | .Xr fork 2 . | |
| e9ce8d39 | 60 | .Sh SEE ALSO |
| 5b2abdfb A |
61 | .Xr nice 1 , |
| 62 | .Xr fork 2 , | |
| 63 | .Xr setpriority 2 , | |
| 64 | .Xr renice 8 | |
| e9ce8d39 | 65 | .Sh HISTORY |
| 5b2abdfb A |
66 | A |
| 67 | .Fn nice | |
| 68 | syscall appeared in | |
| 69 | .At v6 . |