EXIT.2
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C/C++
- ." Copyright (c) 1980 Regents of the University of California.
- ." All rights reserved. The Berkeley software License Agreement
- ." specifies the terms and conditions for redistribution.
- ."
- ." @(#)exit.2 6.4 (Berkeley) 5/22/86
- ."
- .TH EXIT 2 "May 22, 1986"
- .UC 4
- .SH NAME
- exit, _exit - terminate a process
- .SH SYNOPSIS
- .nf
- .ft B
- void _exit(int fIstatusfP)
- .fi
- .SH DESCRIPTION
- .de SP
- .if t .sp 0.4
- .if n .sp
- ..
- .B _exit
- terminates a process with the following consequences:
- .RS
- .SP
- All of the descriptors open in the calling process are closed.
- This may entail delays, for example, waiting for output to drain;
- a process in this state may not be killed, as it is already dying.
- .SP
- If the parent process of the calling process is executing a
- .B wait
- or is interested in the SIGCHLD signal (Minix-vmd),
- then it is notified of the calling process's termination and
- the low-order eight bits of fIstatusfP are made available to it;
- see
- .BR wait (2).
- .SP
- The parent process ID of all of the calling process's existing child
- processes are also set to 1. This means that the initialization process
- (see
- .BR intro (2))
- inherits each of these processes as well.
- .ig
- Any stopped children are restarted with a hangup signal (SIGHUP).
- ..
- .RE
- .PP
- Most C programs call the library routine
- .BR exit (3),
- which performs cleanup actions in the standard I/O library before
- calling fI_exitfP|.
- .SH "RETURN VALUE"
- This call never returns.
- .SH "SEE ALSO"
- .BR fork (2),
- .BR sigaction (2),
- .BR wait (2),
- .BR exit (3).