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.\" (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
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.\" Modified Sat Jul 24 13:32:44 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified Mon Jun 23 14:09:52 1997 by aeb - add EINTR.
.\" Modified Tue Jul  7 12:26:42 1998 by aeb - changed return value wait3
.\"
.\" Japanese Version Copyright (c) 1997,1998 HANATAKA Shinya
.\"         all rights reserved.
.\" Translated Tue Mar  4 00:16:00 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Modified Sun Sep 28 20:49:47 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Modified Fri Aug 17 20:10:46 JST 2001
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated Thu Dec 13 JST 2001 by Kentaro Shirakata <argrath@ub32.org>
.\"
.\"WORD:	signal handling		ʥ
.\"WORD:	suspend			(suspend)
.\"WORD:	zombie			(zombie)
.\"WORD:	child process		ҥץ
.\"WORD:	process group		ץ롼
.\"WORD:	process group ID	ץ롼ID
.\"WORD:	stop			(stop)
.\"WORD:	effective user ID	¸桼ID
.\"WORD:	block			ػ(block)
.\"WORD:	catch			(catch)
.\"WORD:	account			
.\"
.TH WAIT4 2  1997-06-23 "Linux" "Linux Programmer's Manual"
.SH ̾
wait3, wait4 \- BSD ǥץνλԤ
.SH 
.nf
.B #define _USE_BSD
.B #include <sys/types.h>
.B #include <sys/time.h>
.B #include <sys/resource.h>
.B #include <sys/wait.h>
.sp 2
.BI "pid_t wait3(int *" "status" ", int " options ,
.BI "      struct rusage *" rusage );
.sp
.BI "pid_t wait4(pid_t " pid ", int *" status ", int " options ,
.BI "      struct rusage *" rusage );
.fi
.SH 
.B wait3
ؿϻҶλ(exit)뤫ߤΥץʥ
Ȥäƽλ뤫ʥؿ(signal handling function)Ƥӽ
ޤǡߤΥץμ¹Ԥ(suspend)롣⤷ƤӽФ
˴˻ҥץλƤ("(zombie)"ץȸƤФ) 
ˤϤδؿϤ˽λ롣ҥץˤäƻѤƤ
ƥλ񸻤Ʋ롣

.B wait4
ؿϰ
.I pid
ǻꤵ줿Ҷλ뤫ߤΥץʥ
Ȥäƽλ뤫ʥؿƤӽФޤǡߤΥץ
¹Ԥߤ롣⤷ƤӽФ줿˴
.I pid
׵ᤵ줿ҶλƤ(ӡץȸƤФ)ˤ
δؿϤ˽λ롣ҥץˤäƻѤƤƥ
񸻤Ʋ롣

.I pid
ͤϰʲΤɤ줫:
.IP "< \-1"
 ץ롼(process group) ID ͤ
.IR pid 
ҥץɤ줫λޤǤԤĤȤ̣롣
.IP \-1
ϻҥץΤɤ줫λޤԤĤȤ̣; 
.BR wait3 
θƤӽФǤ롣
.IP 0
ϥץ롼 ID ƤӽФץʻҥץԤ
Ȥ̣롣
.IP "> 0"
ϥץ ID  
.IR pid
ҥץԤĤȤ̣롣
.PP
.I options
ͤϰʲƤΥİʾ¤Ǥ:
.TP
.B WNOHANG
Ϥ⤷ԤĤ٤ҥץ¸ߤʤˤϤ֤뤳Ȥ̣롣
.TP
.B WUNTRACED
ϻҶ(stop)Ƥˤ֤뤳Ȥ̣롣
(status)𤵤ʤ
.PP
⤷
.I status
 
.BR NULL 
ǤʤʤС
.B wait3
ޤ
.B wait4

.IR status
ǻꤵ줿˾־Ǽ롣

.PP
ξ֤ϰʲΥޥȤäɾǤ(ΥޥϰȤơ
\(em ֥ХåեؤΥݥ󥿡 \)em ǤϤʤ֥Хåե(\fBint\fR)
Ȥ):
.TP
.BI WIFEXITED( status )
Ϥ⤷Ҷ̾˽λˤϥʳǤ롣
.TP
.BI WEXITSTATUS( status )
Ͻλҥץ֤ͤκDz 8 ӥåȤɾ롣

.B exit()
ƤӽФΰ main ؿǼ¹Ԥ줿
.B return
ʸΰꤵƤϤǤ롣Υޥ
.B WIFEXITED
ǤʤɾǤ롣
.TP
.BI WIFSIGNALED( status )
ϻҥץ(catch)Ƥʤʥˤäƽλ
˿֤
.TP
.BI WTERMSIG( status )
ϻҥץλʥֹ֤Υޥ
.B WIFSIGNALED
ʳξΤɾǤ롣
.TP
.BI WIFSTOPPED( status )
Ϥ⤷֤äƤͳȤʤäҥץߤƤ˿֤

.B WUNTRACED 
ѤˤΤ߲ǽ롣
.TP
.BI WSTOPSIG( status )
ϻҶߤʥֹ֤Υޥ
.B WIFSTOPPED
ʳξΤɾǤ롣
.PP
⤷
.I rusage

.B NULL 
ǤʤʤС
.B struct rusage

.I <sys/resource.h>
륢(account)ؤƤ롣ܤ
.BR getrusage (2)
򻲾Ȥ뤳ȡ
.SH ֤
λҶΥץ ID ֤顼ξ(äˡ
ꤷԤĤ٤ҥץ¸ߤʤˤ) \-1 ֤
.B WNOHANG
ѤƤŬڤʻҶ¸ߤʤˤ 0 ֤
Ĥξˤ
.I errno
Ŭڤꤵ롣
.SH 顼
.TP
.B ECHILD
ꤷԤĤ٤ҥץ¸ߤʤ
.TP
.B EINTR
.B WNOHANG
ꤵƤʤƶػ(block)Ƥʤʥ
.B SIGCHLD

.SH 
ߤǤ
.I <sys/time.h>
򥤥󥯥롼ɤɬפϤʤܿ뤳ȤǤ롣
(ºݤˤ
.I <sys/resource.h>

.I rusage
¤ΤƤ뤬ΥեɤȤ
.I <sys/time.h>
Ƥ
.I struct timeval
ѤƤ롣)
.SH 
SVr4, POSIX.1
.SH Ϣ
.BR signal (2),
.BR getrusage (2),
.BR wait (2),
.BR signal (7)