Files
SDK_SG200x_V2/linux_5.10/tools/build/feature/test-sync-compare-and-swap.c
carbon 0545e9dc6d init version 2024-05-07
commit d1edce71135cc6d98c0a4b5729774542b676e769
Author: sophgo-forum-service <forum_service@sophgo.com>
Date:   Fri Mar 15 16:07:33 2024 +0800

    [fix] recommend using ssh method to clone repo.
    [fix] fix sensor driver repo branch name.
2024-05-07 19:36:36 +08:00

16 lines
286 B
C

// SPDX-License-Identifier: GPL-2.0
#include <stdint.h>
volatile uint64_t x;
int main(int argc, char *argv[])
{
uint64_t old, new = argc;
(void)argv;
do {
old = __sync_val_compare_and_swap(&x, 0, 0);
} while (!__sync_bool_compare_and_swap(&x, old, new));
return old == new;
}