.\" This manpage is Copyright (C) 1992 Drew Eckhardt;
.\"             and Copyright (C) 1993 Michael Haardt, Ian Jackson.
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.\" Modified Wed Jul 21 23:02:38 1993 by Rik Faith <faith@cs.unc.edu>
.\" Modified 2001-11-17, aeb
.\"
.\"*******************************************************************
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.\" This file was generated with po4a. Translate the source file.
.\"
.\"*******************************************************************
.\"
.\" Japanese Version Copyright (c) 1997 KUNIMOTO Yasuhiro, all rights reserved.
.\" Translated Jun 27, 1997 by KUNIMOTO Yasuhiro (hiro@kthree.co.jp)
.\" Modified  Jun 28, 1997 by Yoshiki Sugiura (yox@in.aix.or.jp)
.\" Modified  Jul  6, 1997 by Yoshiki Sugiura (yox@in.aix.or.jp)
.\" Updated & Modified Sun Dec  9 20:02:10 JST 2001
.\"         by Yuichi SATO <ysato@h4.dion.ne.jp>
.\" Updated Sat Sep  3 04:26:00 JST 2005
.\"         by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.TH _EXIT 2 2020\-02\-09 Linux "Linux Programmer's Manual"
.SH 名前
_exit, _Exit \- 呼び出し元のプロセスを終了させる
.SH 書式
\fB#include <unistd.h>\fP
.PP
\fBvoid _exit(int \fP\fIstatus\fP\fB);\fP

\fB#include <stdlib.h>\fP
.PP
\fBvoid _Exit(int \fP\fIstatus\fP\fB);\fP
.PP
.RS -4
glibc 向けの機能検査マクロの要件 (\fBfeature_test_macros\fP(7)  参照):
.RE
.PP
.ad l
\fB_Exit\fP():
.RS 4
_ISOC99_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L
.RE
.ad
.SH 説明
\fB_exit\fP()  terminates the calling process "immediately".  Any open file
descriptors belonging to the process are closed.  Any children of the
process are inherited by \fBinit\fP(1)  (or by the nearest "subreaper" process
as defined through the use of the \fBprctl\fP(2)  \fBPR_SET_CHILD_SUBREAPER\fP
operation).  The process's parent is sent a \fBSIGCHLD\fP signal.
.PP
The value \fIstatus & 0xFF\fP is returned to the parent process as the
process's exit status, and can be collected by the parent using one of the
\fBwait\fP(2)  family of calls.
.PP
関数 \fB_Exit\fP()  は \fB_exit\fP()  と等価である。
.SH 返り値
これらの関数は値を返さない。
.SH 準拠
POSIX.1\-2001, POSIX.1\-2008, SVr4, 4.3BSD.  関数 \fB_Exit\fP()  は C99 で導入された。
.SH 注意
exit の効果、終了状態の受渡し、ゾンビプロセス、シグナル送出などに
ついての議論は、 \fBexit\fP(3) を参照すること。
.PP
The function \fB_exit\fP()  is like \fBexit\fP(3), but does not call any functions
registered with \fBatexit\fP(3)  or \fBon_exit\fP(3).  Open \fBstdio\fP(3)  streams
are not flushed.  On the other hand, \fB_exit\fP()  does close open file
descriptors, and this may cause an unknown delay, waiting for pending output
to finish.  If the delay is undesired, it may be useful to call functions
like \fBtcflush\fP(3)  before calling \fB_exit\fP().  Whether any pending I/O is
canceled, and which pending I/O may be canceled upon \fB_exit\fP(), is
implementation\-dependent.
.SS "C ライブラリとカーネルの違い"
In glibc up to version 2.3, the \fB_exit\fP()  wrapper function invoked the
kernel system call of the same name.  Since glibc 2.3, the wrapper function
invokes \fBexit_group\fP(2), in order to terminate all of the threads in a
process.  (The raw \fB_exit\fP()  system call terminates only the calling
thread.)
.SH 関連項目
\fBexecve\fP(2), \fBexit_group\fP(2), \fBfork\fP(2), \fBkill\fP(2), \fBwait\fP(2),
\fBwait4\fP(2), \fBwaitpid\fP(2), \fBatexit\fP(3), \fBexit\fP(3), \fBon_exit\fP(3),
\fBtermios\fP(3)
.SH この文書について
この man ページは Linux \fIman\-pages\fP プロジェクトのリリース 5.10 の一部である。プロジェクトの説明とバグ報告に関する情報は
\%https://www.kernel.org/doc/man\-pages/ に書かれている。