std::atomic...::notify_all(3)

💅 NAME 💅

std::atomic_ref::notify_all — bestie, it's literally std::atomic_ref::notify_all, that's the whole name, we're not doing a whole bit here 💖

Ok so this is a page from the C++ Standard Libary manual (yes that's how the manual spells it, I'm not gonna fix their typo, that's their business 🫶), and it's giving ✨*atomic notifying*✨ energy. Let's get into it.

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✨ Synopsis ✨

Here's the two overloads, dead exact, no notes:

void notify_all() const noexcept;          (1) (since C++20)
void notify_all() const volatile noexcept; (2) (since C++20)

Both of these babies are since C++20 — so if your compiler is giving you grief, check your standard flag first, bestie, I'm just saying 🙈

They perform atomic notifying operations. That's the vibe.

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🌸 DESCRIPTION 🌸

Okay so what does it do? It unblocks all threads that are blocked in atomic waiting operations (i.e. wait()) on *this — if there are any. And if there aren't any? It does nothing. Just vibes. Chin up, queen, no crash, no drama 💅

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🎀 RETURN VALUE 🎀

(none)

Literally nothing. It returns void energy. It ate and left no crumbs, no return value, periodt 👑

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🦋 NOTES 🦋

This form of change-detection is often more efficient than simple polling or pure spinlocks. So like... it's the main character of change-detection, fr fr. Stop spinning, start notifying ✨

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💀 EXAMPLE 💀

This section is incomplete Reason: no example

Yeah. No example. The TODO is real, bestie 😭 If you want one you're gonna have to write it yourself, I don't make the rules.

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🔥 SEE ALSO 🔥

• wait — blocks the thread until notified and the atomic value changes · (public member function)
• atomic_wait, atomic_wait_explicit — blocks the thread until notified and the atomic value changes · (C++20) · (function template)
• atomic_notify_one — notifies a thread blocked in atomic_wait · (C++20) · (function template)

So wait is the one doing the blocking, and this whole family is the notification squad — they're a package deal, iykyk 🧚

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⭐ CATEGORY ⭐

• * Todo no example

(Yeah, still no example. We know. We've accepted it. 🌈)

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Mwah 💜 that's the page! Sourced from http://cppreference.com, version 2024.06.10, dated 2024.06.10 — so it's a little vintage, like a fine aged manual page 🍓 Go notify some threads, bestie, you've got this 🫶✨