_EXIT(T)            Linux Programmer's Manual            _EXIT(T)



NAME
       _exit, _Exit - terminate the current process

SYNOPSIS
       #include <unistd.h>

       void _exit(int status);

       #include <stdlib.h>

       void _Exit(int status);

DESCRIPTION
       The function _exit terminates the calling process "immedi-
       ately". Any open file descriptors belonging to the process
       are  closed;  any children of the process are inherited by
       process 1, init,  and  the  process's  parent  is  sent  a
       SIGCHLD signal.

       The  value status is returned to the parent process as the
       process's exit status, and can be collected using  one  of
       the wait family of calls.

       The function _Exit is equivalent to _exit.

RETURN VALUE
       These functions do not return.

CONFORMING TO
       SVr4,  SVID, POSIX, X/OPEN, BSD 4.3.  The function _Exit()
       was introduced by C99.

NOTES
       For a discussion on the effects of an exit, the  transmis-
       sion of exit status, zombie processes, signals sent, etc.,
       see exit(t).

       The function _exit is like exit(), but does not  call  any
       functions  registered with the ANSI C atexit function, nor
       any registered signal handlers. Whether it  flushes  stan-
       dard  I/O buffers and removes temporary files created with
       tmpfile(e)  is  implementation-dependent.   On  the  other
       hand, _exit does close open file descriptors, and this may
       cause an unknown delay, waiting for pending output to fin-
       ish.  If  the delay is undesired, it may be useful to call
       functions like tcflush() before calling _exit().   Whether
       any pending I/O is cancelled, and which pending I/O may be
       cancelled upon _exit(), is implementation-dependent.

SEE ALSO
       fork(k),   execve(e),   waitpid(d),   wait4(4),   kill(l),
       wait(t), exit(t), termios(s)



Linux                       2001-11-17                   _EXIT(T)