exit(2) [minix man page]

EXIT(2) 							System Calls Manual							   EXIT(2)

NAME

       exit, _exit - terminate a process

SYNOPSIS

       void _exit(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	(Minix-vmd),  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 initializa-
	      tion process (see intro(2)) inherits each of these processes as well.

       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), sigaction(2), wait(2), exit(3).

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

EXIT(2) 						      BSD System Calls Manual							   EXIT(2)

NAME

     _Exit, _exit -- terminate the calling process

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <stdlib.h>

     void
     _Exit(int status);

     #include <unistd.h>

     void
     _exit(int status);

DESCRIPTION

     The _Exit() and _exit() functions are equivalent.	They each terminate a process with the following consequences:

     o	 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.

     o	 If the parent process of the calling process has an outstanding wait(2) call or catches the SIGCHLD signal, it is notified of the calling
	 process's termination and the status is set as defined by wait(2).

     o	 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.

     o	 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 process group.

     o	 If the process is a controlling process (see intro(2)), the SIGHUP signal is sent to the foreground process group of the controlling ter-
	 minal, and all current access to the controlling terminal is revoked.

     Most C programs call the library routine exit(3), which flushes buffers, closes streams, unlinks temporary files, etc., before calling
     _exit().

RETURN VALUES

     _Exit() and _exit() can never return.

SEE ALSO

     fork(2), sigaction(2), wait(2), exit(3)

STANDARDS

     The _exit() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').  The _Exit() function conforms to ISO/IEC 9899:1999 (``ISO C99'').

BSD
								  April 23, 2002							       BSD