Files
esp-idf/components/newlib/platform_include/stdatomic.h
Alexey Lapshin 3b1916ad06 fix(newlib): fix __atomic_test_and_set to ensure atomicity
Before the change described in
https://gcc.gnu.org/pipermail/gcc-patches/2023-September/631393.html it
appeared that inlining built-in GCC function __atomic_test_and_set() was
incorrect. It resulted in a non-atomic write.
For GCC toolchains which do not have such patch yet, this commit fixes
__atomic_test_and_set to be atomic in IDF's builds.
2025-07-31 17:53:37 +07:00

25 lines
415 B
C

/*
* SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include_next "stdatomic.h"
#ifndef __clang__
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
static inline bool __atomic_test_and_set(volatile void *ptr, int memorder)
{
return __atomic_exchange_1((bool *)ptr, true, memorder);
}
#ifdef __cplusplus
}
#endif
#endif