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.\" Copyright 7/93 by Darren Senn <sinster@scintilla.santa-clara.ca.us>
.\" Based on a similar page Copyright 1992 by Rick Faith
.\" May be freely distributed
.\" Modified Tue Oct 22 00:22:35 EDT 1996 by Eric S. Raymond <esr@thyrsus.com>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\" all rights reserved.
.\" Translated Sat Feb 22 20:30:00 JST 1997
.\" by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.\"WORD: interval timer Х롦ޡ
.\"WORD: process ץ
.\"WORD: real time »
.\"WORD: kernel ͥ
.\"WORD: user 桼
.\"WORD: profile ץե
.\"WORD: timer ޡ
.\"WORD: signal ʥ
.\"WORD: active ƥ
.\"WORD: true
.\"
.TH GETITIMER 2 "5 August 1993" "Linux 0.99.11" "Linux Programmer's Manual"
.SH ̾
getitimer, setitimer \- Х롦ޡͤޤꤹ
.SH
.PD 0
.HP
.B #include <sys/time.h>
.sp
.HP
.B int getitimer(int
.IB which ,
.B struct itimerval
.BI * value );
.HP
.B int setitimer(int
.IB which ,
.B const struct itimerval
.BI * value ,
.B struct itimerval
.BI * ovalue );
.PD
.SH
ƥϥץȤ 3 ĤΥХ롦ޡ롣
줾Υޡ̡λΰǸ
ɤ줫Υޡڤ줿ˤϥץ˥ʥ뤬졢
ޡ (֤) Ƶư롣
.TP 1.5i
.B ITIMER_REAL
ϼ»(real time)Ǹڤ줿ˤ
.B SIGALRM
롣
.TP
.B ITIMER_VIRTUAL
ϥץ¹ԤƤ֤Τ߸ڤ줿
.B SIGVTALRM
餵롣
.TP
.B ITIMER_PROF
ϥץ¹ԤƤ֤
ΥץΤ˥ƥब¹ԤƤ֤˸롣
ΥޡϤƤ
.BR ITIMER_VIRTUAL
Ȥ߹蘆졢ץꥱ֤ͥȥ桼֤
ɤλ֤ᤴץե뤹Τ˻Ѥ롣
ڤ줿ˤ
.B SIGPROF
롣
.LP
ޡͤϰʲι¤Τˤä:
.PD 0
.RS .5i
.nf
struct itimerval {
struct timeval it_interval; /* next value */
struct timeval it_value; /* current value */
};
struct timeval {
long tv_sec; /* seconds */
long tv_usec; /* microseconds */
};
.fi
.RE
.PD
.LP
.BR getitimer (2)
.I value
ǻꤵ줿¤Τ
.I which
ǻꤵ줿
(
.BR ITIMER_REAL ,
.BR ITIMER_VIRTUAL ,
.BR ITIMER_PROF
Τɤ줫) ޡθߤǼ롣
.B it_value
ǤˤϥޡλĤ֤ꤵ롣ޡդξ
ꤵ롣Ʊͤ
.B it_interval
ˤϽͤꤵ롣
.BR setitimer (2)
ϻꤵ줿ޡ
.IR value
ͤꤹ롣
.I ovalue
ǤʤСޡθŤͤ˳Ǽ롣
.LP
ޡ
.I it_value
饼ظƸäƤʥ
.IR it_interval
˽롣
ޡꤵ줿(
.RI it_value
ޡڤ줿
.I it_interval
)ߤ롣
.LP
.I tv_sec
.I tv_usec
ξޡֳ֤ꤹΤ˰̣ġ
.LP
ᤷ֤ޤ˥ޡڤ뤳ȤϤʤ
դˤû֤٤롣
ͤϥƥλʬǽ (ߤ 10ms) ˰¸롣
ڤ줿ˤϥʥ뤬졢ޡ롣ץ
ƥ(active)ʻ(
.BR ITIMER_VIRT
ˤϾ˿)˥ޡڤ줿硢줿ʥϤ
롣ǤʤХƥ٤ˤ꾯λ֤٤
롣
.LP
.SH ֤
ϥ֤롣顼ξ \-1 ֤졢
.I errno
Ŭڤꤵ롣
.SH 顼
.TP
.B EFAULT
.I value
ޤ
.I ovalue
ͭʥݥǤʤ
.TP
.B EINVAL
.I which
.BR ITIMER_REAL ,
.BR ITIMER_VIRT ,
.BR ITIMER_PROF
Τɤ줫Ǥʤ
.SH
SVr4, 4.4BSD (Υ 4.2BSD ǻϤƸ줿).
.SH Ϣ
.BR gettimeofday (2),
.BR sigaction (2),
.BR signal (2).
.SH Х
Linux ˤơʥäǤꡢ줾Υʥ
ͭΥ٥ȤΤߵ롣ǰ۾˽Ť٤βǤ
.B ITIMER_REAL
ϰΥʥ뤬ڤƤޤȤ롣Τ褦ʾ
ܤΥʥϼʤƤޤ
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