NAME

       explain_eventfd_or_die - create event notify file descriptor and report errors

SYNOPSIS

       #include <libexplain/eventfd.h>
       int explain_eventfd_or_die(unsigned int initval, int flags);
       int explain_eventfd_on_error(unsigned int initval, int flags);

DESCRIPTION

       The explain_eventfd_or_die function is used to call the eventfd(2) system call. On failure
       an explanation will be printed to stderr, obtained from the  explain_eventfd(3)  function,
       and then the process terminates by calling exit(EXIT_FAILURE).

       The  explain_eventfd_on_error  function  is  used  to  call the eventfd(2) system call. On
       failure an explanation will be printed to stderr,  obtained  from  the  explain_eventfd(3)
       function, but still returns to the caller.

       initval The initval, exactly as to be passed to the eventfd(2) system call.

       flags   The flags, exactly as to be passed to the eventfd(2) system call.

RETURN VALUE

       The  explain_eventfd_or_die  function  only  returns  on  success, see eventfd(2) for more
       information. On failure, prints an explanation and exits, it does not return.

       The explain_eventfd_on_error function always returns  the  value  return  by  the  wrapped
       eventfd(2) system call.

EXAMPLE

       The  explain_eventfd_or_die  function  is  intended to be used in a fashion similar to the
       following example:
              int result = explain_eventfd_or_die(initval, flags);

SEE ALSO

       eventfd(2)
               create a file descriptor for event notification

       explain_eventfd(3)
               explain eventfd(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

                                                                        explain_eventfd_or_die(3)