exit(3p) — Linux manual page


EXIT(3P)                POSIX Programmer's Manual               EXIT(3P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The
       Linux implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior),
       or the interface may not be implemented on Linux.

NAME         top

       exit — terminate a process

SYNOPSIS         top

       #include <stdlib.h>

       void exit(int status);

DESCRIPTION         top

       The functionality described on this reference page is aligned
       with the ISO C standard. Any conflict between the requirements
       described here and the ISO C standard is unintentional. This
       volume of POSIX.1‐2017 defers to the ISO C standard.

       The value of status may be 0, EXIT_SUCCESS, EXIT_FAILURE, or any
       other value, though only the least significant 8 bits (that is,
       status & 0377) shall be available from wait() and waitpid(); the
       full value shall be available from waitid() and in the siginfo_t
       passed to a signal handler for SIGCHLD.

       The exit() function shall first call all functions registered by
       atexit(), in the reverse order of their registration, except that
       a function is called after any previously registered functions
       that had already been called at the time it was registered. Each
       function is called as many times as it was registered. If, during
       the call to any such function, a call to the longjmp() function
       is made that would terminate the call to the registered function,
       the behavior is undefined.

       If a function registered by a call to atexit() fails to return,
       the remaining registered functions shall not be called and the
       rest of the exit() processing shall not be completed. If exit()
       is called more than once, the behavior is undefined.

       The exit() function shall then flush all open streams with
       unwritten buffered data and close all open streams. Finally, the
       process shall be terminated with the same consequences as
       described in Consequences of Process Termination.

RETURN VALUE         top

       The exit() function does not return.

ERRORS         top

       No errors are defined.

       The following sections are informative.

EXAMPLES         top




RATIONALE         top

       See _Exit().



SEE ALSO         top

       _Exit(3p), atexit(3p), exec(1p), longjmp(3p), tmpfile(3p),
       wait(3p), waitid(3p)

       The Base Definitions volume of POSIX.1‐2017, stdlib.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  In the event of any
       discrepancy between this version and the original IEEE and The
       Open Group Standard, the original IEEE and The Open Group
       Standard is the referee document. The original Standard can be
       obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page
       are most likely to have been introduced during the conversion of
       the source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group               2017                          EXIT(3P)

Pages that refer to this page: stdlib.h(0p)sh(1p)abort(3p)aio_error(3p)aio_read(3p)aio_return(3p)aio_write(3p)atexit(3p)close(3p)exec(3p)_Exit(3p)flockfile(3p)getrusage(3p)lio_listio(3p)mlock(3p)mlockall(3p)posix_spawn(3p)pthread_exit(3p)semop(3p)shmat(3p)shmdt(3p)wait(3p)waitid(3p)