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_exit (2)
  • _exit (2) ( Solaris man: Системные вызовы )
  • _exit (2) ( FreeBSD man: Системные вызовы )
  • _exit (2) ( Русские man: Системные вызовы )
  • >> _exit (2) ( Linux man: Системные вызовы )
  • _exit (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    _exit, _Exit - terminate the calling process
     
    

    SYNOPSIS

    #include <unistd.h>

    void _exit(int status);

    #include <stdlib.h>

    void _Exit(int status);

    Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

    _Exit(): _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99  

    DESCRIPTION

    The function _exit() terminates the calling process "immediately". 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(2) family of calls.

    The function _Exit() is equivalent to _exit().  

    RETURN VALUE

    These functions do not return.  

    CONFORMING TO

    SVr4, POSIX.1-2001, 4.3BSD. The function _Exit() was introduced by C99.  

    NOTES

    For a discussion on the effects of an exit, the transmission of exit status, zombie processes, signals sent, etc., see exit(3).

    The function _exit() is like exit(3), but does not call any functions registered with atexit(3) or on_exit(3). Whether it flushes standard I/O buffers and removes temporary files created with tmpfile(3) 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 finish. If the delay is undesired, it may be useful to call functions like tcflush(3) before calling _exit(). Whether any pending I/O is canceled, and which pending I/O may be canceled upon _exit(), is implementation-dependent.  

    SEE ALSO

    execve(2), exit_group(2), fork(2), kill(2), wait(2), wait4(2), waitpid(2), atexit(3), exit(3), on_exit(3), termios(3)  

    COLOPHON

    This page is part of release 3.14 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    CONFORMING TO
    NOTES
    SEE ALSO
    COLOPHON


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