EXIT(2)                  DOMAIN/IX SYS5                   EXIT(2)



NAME
     exit, _exit - terminate process

USAGE
     void exit(status)
     int status;

     void _exit(status)
     int status;


DESCRIPTION
     Exit terminates the process that called it, with the follow-
     ing consequences:

     ⊕  All of the file descriptors open in the calling process
        are closed.

     ⊕  If the parent process of the calling process is executing
        a wait, it is notified of the calling process's termina-
        tion and the low order eight bits (i.e., bits 0377) of
        status are made available to it; see wait(2).

     ⊕  If the parent process of the calling process is not exe-
        cuting a wait, the calling process is transformed into a
        "pseudo-process" that only occupies a slot in the process
        table.  The process has no other space allocated either
        in user or kernel space.

     ⊕  The parent process ID of all of the calling process's
        existing children and pseudo-processes is set to 1, which
        means that these processes effectively become orphans.

     ⊕  Each attached shared memory segment is detached and the
        value of shm_nattach in the data structure associated
        with its shared memory identifier is decreased by 1.

     ⊕  For each semaphore for which the calling process has set
        a semadj value (see semop(2)), that semadj value is added
        to the semval of the specified semaphore.

     ⊕  If the process has a process, text, or data lock, an
        unlock is performed (see plock(2)).

     ⊕  If the process IDs, tty group IDs, and process group ID
        of the calling process are equal, the SIGHUP signal is
        sent to each process that has a process group ID equal to
        that of the calling process.





Printed 12/4/86                                            EXIT-1

EXIT(2)                  DOMAIN/IX SYS5                   EXIT(2)



     The C function exit may cause cleanup actions before the
     process exits.  The function _exit circumvents all cleanup.

RELATED INFORMATION
     plock(2), semop(2), signal(2), wait(2)
















































EXIT-2                                            Printed 12/4/86