MirOS Manual: exit(3), _Exit(3)

EXIT(3)                    BSD Programmer's Manual                     EXIT(3)

NAME

     exit, _Exit - perform normal program termination

SYNOPSIS

     #include <stdlib.h>

     void
     exit(int status);

     void
     _Exit(int status);

DESCRIPTION

     The exit() and _Exit() functions terminate a process.

     Before termination, exit() performs the following operations in the order
     listed:

           1.   Call the functions registered with the atexit(3) function, in
                the reverse order of their registration.

           2.   Flush all open output streams.

           3.   Close all open streams.

           4.   Unlink all files created with the tmpfile(3) function.

     The _Exit() function terminates without calling the functions registered
     with the atexit(3) function. The OpenBSD implementation of _Exit() does
     not flush open output streams or unlink files created with the tmpfile(3)
     function. However, this behavior is implementation-specific.

     Lastly, exit() and _Exit() call _exit(2). Note that typically _exit(2)
     only passes the lower 8 bits of status on to the parent, thus negative
     values have less meaning.

RETURN VALUES

     The exit() and _Exit() functions never return.

SEE ALSO

     _exit(2), atexit(3), intro(3), sysexits(3), tmpfile(3)

STANDARDS

     The exit() and _Exit() functions conform to ISO/IEC 9899:1999 ("ISO
     C99").

MirOS BSD #10-current          January 21, 2004                              1

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