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 0.19
Copyright (C) 2009 Peter Miller
explain_eventfd_or_die(3)