On Mon, 11 Nov 2024, ende.tan@xxxxxxxxxxxxxxxx wrote:
> From: Tan En De <ende.tan@xxxxxxxxxxxxxxxx>
>
> Include tv_sec in addition to tv_nsec in __clock_gettime(). If the value
> of variable 'a' wraps around, it may cause 'delta' to be negative, while
> 'delta' is defined with u64 type.
>
> Signed-off-by: Tan En De <ende.tan@xxxxxxxxxxxxxxxx>
> ---
> src/queuelat/queuelat.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/src/queuelat/queuelat.c b/src/queuelat/queuelat.c
> index c549cd8..c057389 100644
> --- a/src/queuelat/queuelat.c
> +++ b/src/queuelat/queuelat.c
> @@ -292,7 +292,8 @@ static inline unsigned long long __clock_gettime(void)
> if (ret < 0)
> return 0;
>
> - return now.tv_nsec;
> + // Combine seconds and nanoseconds into a single value in nanoseconds
> + return (unsigned long long)now.tv_sec * 1000000000ULL + now.tv_nsec;
> }
>
> #define gettick(val) do { (val) = __clock_gettime(); } while (0)
> --
> 2.34.1
>
>
>
Signed-off-by: John Kacur <jkacur@xxxxxxxxxx>
