4.3BSD - /usr/man/cat2/exit.0

EXIT(2)                                                                EXIT(2)


NAME
       _exit - terminate a process

SYNOPSIS
       _exit(status)
       int status;

DESCRIPTION
       _exit terminates a process with the following consequences:

       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.

       If  the parent process of the calling process is executing a wait or is
       interested in the SIGCHLD signal, then it is notified  of  the  calling
       process’s  termination  and the low-order eight bits of status are made
       available to it; see wait(2).

       The parent process ID of all of the calling  process’s  existing  child
       processes  are  also set to 1.  This means that the initialization pro‐
       cess (see intro(2)) inherits each of  these  processes  as  well.   Any
       stopped children are restarted with a hangup signal (SIGHUP).

       Most  C  programs  call  the  library  routine  exit(3), which performs
       cleanup actions in the standard I/O library before calling _exit.

RETURN VALUE
       This call never returns.

SEE ALSO
       fork(2), sigvec(2), wait(2), exit(3)


4th Berkeley Distribution        May 22, 1986                          EXIT(2)