explain_eventfd_or_die(3)

💖 explain_eventfd_or_die(3) 💖

okay bestie, so this one lives in the Library Functions Manual and it's literally the moment your code stops being brave and starts being dramatic. no cap. 🎀

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✨ NAME ✨

explain_eventfd_or_die — create event notify file descriptor and report errors 🦋

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🌸 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);

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💅 DESCRIPTION 💅

so there's two of them and they're siblings, not twins, ok? one of them is the unhinged one and one of them is the chill one.

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). yeah. it's giving no survivors. 💀

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. she's the emotionally stable one 🫶

• 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.

like, do not get cute with these arguments. you hand them over exactly as they'd go to eventfd(2). periodt. ⭐

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🎀 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. she does not come back. she has left the building. 😭

The explain_eventfd_on_error function always returns the value return by the wrapped eventfd(2) system call. note that "return" is spelled exactly like that in the original and we are respectfully keeping it 💜

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🌈 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);

look at her. one line. zero worries. iconic. 👑

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🦋 SEE ALSO 🦋

• eventfd(2) — create a file descriptor for event notification
• explain_eventfd(3) — explain eventfd(2) errors
• exit(2) — terminate the calling process

go read those too bestie, they're all part of the same little family 🧚

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💜 COPYRIGHT 💜

libexplain version 1.4 Copyright (C) 2009 Peter Miller

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and that's the whole page fr fr 💖 this was explain_eventfd_or_die(3), made with libexplain version 1.4, copyright (C) 2009 Peter Miller, and yes the footer says the same thing but cuter now. mwah. 💅✨