---
name: "std::atomic_flag"
section: "3"
platform: "linux"
package: "gcc"
version: "16.2.1+r23+gd564253eb6c8-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/std::atomic_flag"
---

# std::atomic\_flag(3)

atomic\_flag

## NAME

std::atomic\_flag - atomic\_flag

## SYNOPSIS

\#include \<atomic\>

### Public Member Functions

constexpr **atomic\_flag** (bool \_\_i) noexcept\
 **atomic\_flag** (const atomic\_flag &)=delete\
 void **clear** (**memory\_order** \_\_m=memory\_order\_seq\_cst) noexcept\
 void **clear** (**memory\_order** \_\_m=memory\_order\_seq\_cst) volatile noexcept\
 atomic\_flag & **operator=** (const atomic\_flag &) volatile =delete\
 atomic\_flag & **operator=** (const atomic\_flag &)=delete\
 bool **test** (**memory\_order** \_\_m=memory\_order\_seq\_cst) const noexcept\
 bool **test** (**memory\_order** \_\_m=memory\_order\_seq\_cst) const volatile noexcept\
 bool **test\_and\_set** (**memory\_order** \_\_m=memory\_order\_seq\_cst) noexcept\
 bool **test\_and\_set** (**memory\_order** \_\_m=memory\_order\_seq\_cst) volatile noexcept\

## Detailed Description

atomic\_flag

## Author

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