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1996-09-01
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EXIT(2) UNIX Programmer's Manual EXIT(2)
NNAAMMEE
__eexxiitt - terminate the calling process
SSYYNNOOPPSSIISS
##iinncclluuddee <<uunniissttdd..hh>>
_v_o_i_d
__eexxiitt(_i_n_t _s_t_a_t_u_s)
DDEESSCCRRIIPPTTIIOONN
The __eexxiitt() function terminates a process with the following conse-
quences:
++oo All of the descriptors open in the calling process are closed. This
may entail delays, for example, waiting for output to drain; a pro-
cess in this state may not be killed, as it is already dying.
++oo If the parent process of the calling process has an outstanding wait
call or catches the SIGCHLD signal, it is notified of the calling
process's termination and the _s_t_a_t_u_s is set as defined by wait(2).
++oo The parent process-ID of all of the calling process's existing child
processes are set to 1; the initialization process (see the DEFINI-
TIONS section of intro(2)) inherits each of these processes.
++oo If the termination of the process causes any process group to become
orphaned (usually because the parents of all members of the group
have now exited; see ``orphaned process group'' in intro(2)), and if
any member of the orphaned group is stopped, the SIGHUP signal and
the SIGCONT signal are sent to all members of the newly-orphaned pro-
cess group.
++oo If the process is a controlling process (see intro(2)), the SIGHUP
signal is sent to the foreground process group of the controlling
terminal, and all current access to the controlling terminal is re-
voked.
Most C programs call the library routine exit(3), which flushes buffers,
closes streams, unlinks temporary files, etc., before calling __eexxiitt().
RREETTUURRNN VVAALLUUEE
__eexxiitt() can never return.
SSEEEE AALLSSOO
fork(2), sigaction(2), wait(2), exit(3)
SSTTAANNDDAARRDDSS
The __eexxiitt function is defined by IEEE Std1003.1-1988 (``POSIX'').
4th Berkeley Distribution June 4, 1993 1