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.\" (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" Modified Sat Jul 24 13:30:06 1993 by Rik Faith <faith@cs.unc.edu>
.\" Modified Sun Aug 21 17:42:42 1994 by Rik Faith <faith@cs.unc.edu>
.\"          (Thanks to Koen Holtman <koen@win.tue.nl>)
.\" Modified Wed May 17 15:54:12 1995 by Rik Faith <faith@cs.unc.edu>
.\"           To remove *'s from status in macros (Thanks to Michael Shields).
.\" Modified as suggested by Nick Duffek <nsd@bbc.com>, aeb, 960426
.\" Modified Mon Jun 23 14:09:52 1997 by aeb - add EINTR.
.\" Modified Thu Nov 26 02:12:45 1998 by aeb - add SIGCHLD stuff.
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\"         all rights reserved.
.\" Translated Tue Mar  4 00:14:47 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Modified Sun Sep 28 20:37:28 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Modified Tue Dec  1 00:13:44 JST 1998
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.\"WORD:	process			ץ
.\"WORD:	signal			ʥ
.\"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:	macro			ޥ
.\"WORD:	effective user ID	¸桼ID
.\"WORD:	block			ػ(block)
.\"
.TH WAIT 2  "23 June 1997" "Linux" "Linux Programmer's Manual"
.SH ̾
wait, waitpid \- ץ(process)νλԤ
.SH 
.B #include <sys/types.h>
.br
.B #include <sys/wait.h>
.sp
.BI "pid_t wait(int *" "status" ")"
.br
.BI "pid_t waitpid(pid_t " pid ", int *" status ", int " options );
.SH 
.B wait
ؿϻҶλ(exit)롢뤤ϸߤΥץʥ
Ȥäƽλ뤫ʥؿ(signal handling function)ƤӽФ
ޤǸߤΥץμ¹Ԥ(suspend)롣⤷ƤӽФ
˴˻ҥץλƤ("(zombie)"ץȸƤФ) 
ˤϤδؿϤ˽λ롣ҥץˤäƻѤƤ
ƥλ񸻤Ʋ롣

.B waitpid
ؿϰ
.I pid
ǻꤵ줿Ҷλ롢뤤ϸߤΥץʥ
Ȥäƽλ뤫ʥؿƤӽФޤǸߤΥץ
¹Ԥߤ롣⤷ƤӽФ줿˴
.I pid
ǻꤵ줿ҥץλƤ(ӡץȸƤФ)
ˤϤδؿϤ˽λ롣ҥץˤäƻѤƤ
λ񸻤Ʋ롣

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

.IR status
ǻꤵ줿˾(status)Ǽ롣

ξ֤ϰʲΥޥ(macro)ȤäɾǤ(Υޥϰ
 \(em ֥ХåեؤΥݥ󥿡Ǥʤ \(em ֥Хåե
(\fBint\fR) ):
.TP
.BI WIFEXITED( status )
Ϥ⤷Ҷ̾˽λˤϥʳǤ롣
.TP
.BI WEXITSTATUS( status )
Ͻλҥץ
.B exit
ƤӽФΰ main ؿǼ¹Ԥ줿
.B return
ʸΰꤵ롣Υޥ
.B WIFEXITED
ǤʤɾǤ롣
.TP
.BI WIFSIGNALED( status )
ϻҥץ(catch)Ƥʤʥˤäƽλ˿(true)
֤
.TP
.BI WTERMSIG( status )
ϻҥץλʥֹ֤Υޥ
.B WIFSIGNALED
ʳξΤɾǤ롣
.TP
.BI WIFSTOPPED( status )
Ϥ⤷֤äƤͳȤʤäҥץ(stop)Ƥ
˿֤
.BR WUNTRACED 
ѤˤΤߤꤨ롣
.TP
.BI WSTOPSIG( status )
ϻҶߤʥֹ֤Υޥ
.B WIFSTOPPED
ʳξΤɾǤ롣
.SH ֤
λҶΥץ ID ֤롢顼ξ \-1 
.B WNOHANG
ѤƤŬڤʻҶ¸ߤʤˤ 0 ֤롣
(ξˤ
.I errno
Ŭڤꤵ롣)
.SH 顼
.TP
.B ECHILD
.I pid
ǻꤷץ¸ߤʤƤӽФץλҥץǤʤ
(SIGCHLD  SIG_IGN ꤷˤϼʬλҶǤ⤳ʤ롣)
.TP
.B EINVAL
.I options
Ǥ롣
.TP
.B ERESTARTSYS
.B WNOHANG
ꤵƤʤƶػ(block)Ƥʤʥ
.B SIGCHLD
Υ顼ϥƥࡦ뤫֤롣
饤֥꡼󥿡ե
.BR ERESTARTSYS 
֤ȤƤʤ
.BR EINTR 
֤롣
.SH 
Single Unix Specification ˤ(Linux ˤ¸ߤʤ) SA_NOCLDWAIT ե饰
ˤĤƤεҤ롣Υե饰ꤵƤ뤫SIGCHLD ưȤ
SIG_IGN ꤵ줿(Ǥ POSIX ǤϵƤʤ)ˤ
λҥץϥ(zombie)ˤʤ뤳Ȥʤ
.I wait()

.I waitpid()
ƤӽФȻҥץλޤ(block)롣
.I errno
 ECHILD ꤵƼԤ롣
.SH 
SVr4, POSIX.1
.SH Ϣ
.BR signal (2),
.BR wait4 (2),
.BR signal (7)