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/* * Copyright (c) 1990 Regents of the University of California. * All rights reserved. * * %sccs.include.redist.c% */ /* FUNCTION <<exit>>---end program execution INDEX exit ANSI_SYNOPSIS #include <stdlib.h> void exit(int <[code]>); TRAD_SYNOPSIS #include <stdlib.h> void exit(<[code]>) int <[code]>; DESCRIPTION Use <<exit>> to return control from a program to the host operating environment. Use the argument <[code]> to pass an exit status to the operating environment: two particular values, <<EXIT_SUCCESS>> and <<EXIT_FAILURE>>, are defined in `<<stdlib.h>>' to indicate success or failure in a portable fashion. <<exit>> does two kinds of cleanup before ending execution of your program. First, it calls all application-defined cleanup functions you have enrolled with <<atexit>>. Second, files and streams are cleaned up: any pending output is delivered to the host system, each open file or stream is closed, and files created by <<tmpfile>> are deleted. RETURNS <<exit>> does not return to its caller. PORTABILITY ANSI C requires <<exit>>, and specifies that <<EXIT_SUCCESS>> and <<EXIT_FAILURE>> must be defined. Supporting OS subroutines required: <<_exit>>. */ #include <stdlib.h> #include <unistd.h> /* for _exit() declaration */ #include <reent.h> #include "atexit.h" /* * Exit, flushing stdio buffers if necessary. */ void _DEFUN (exit, (code), int code) { __call_exitprocs (code, NULL); if (_GLOBAL_REENT->__cleanup) (*_GLOBAL_REENT->__cleanup) (_GLOBAL_REENT); _exit (code); }