[dpdk-dev] [PATCH v9 04/10] eal/Windows: add clock_gettime on Windows

[Tal Shnaiderman]

> Subject: [PATCH v9 04/10] eal/Windows: add clock_gettime on Windows
> 
> External email: Use caution opening links or attachments
> 
> 
> Add clock_gettime on Windows in rte_os_shim.h
> 
> Signed-off-by: Jie Zhou <jizh at microsoft.com>
> Signed-off-by: Jie Zhou <jizh at linux.microsoft.com>
> ---
>  app/test-pmd/config.c                 |  1 +

Unneeded change

>  lib/eal/windows/include/rte_os_shim.h | 38
> +++++++++++++++++++++++++++
>  2 files changed, 39 insertions(+)
> 
> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c index
> e189062ef..0e86ed02f 100644
> --- a/app/test-pmd/config.c
> +++ b/app/test-pmd/config.c
> @@ -205,6 +205,7 @@ nic_stats_display(portid_t port_id)
>                "%-"PRIu64"\n", stats.opackets, stats.oerrors, stats.obytes);
> 
>         diff_ns = 0;
> +
>         if (clock_gettime(CLOCK_TYPE_ID, &cur_time) == 0) {
>                 uint64_t ns;
> 
> diff --git a/lib/eal/windows/include/rte_os_shim.h
> b/lib/eal/windows/include/rte_os_shim.h
> index e60f27400..ec1087290 100644
> --- a/lib/eal/windows/include/rte_os_shim.h
> +++ b/lib/eal/windows/include/rte_os_shim.h
> @@ -75,4 +75,42 @@ rte_timespec_get(struct timespec *now, int base)
> 
>  #endif /* RTE_TOOLCHAIN_GCC */
> 
> +/* Identifier for system-wide realtime clock. */
> +#define CLOCK_REALTIME                  0
> +/* Monotonic system-wide clock. */
> +#define CLOCK_MONOTONIC                 1
> +/* High-resolution timer from the CPU. */
> +#define CLOCK_PROCESS_CPUTIME_ID        2
> +/* Thread-specific CPU-time clock. */
> +#define CLOCK_THREAD_CPUTIME_ID         3
> +
> +#define NS_PER_SEC 1E9
> +
> +typedef int clockid_t;
> +
> +static inline int
> +rte_clock_gettime(clockid_t clock_id, struct timespec *tp) {
> +       LARGE_INTEGER pf, pc;
> +       LONGLONG nsec;
> +       switch (clock_id) {
> +       case CLOCK_REALTIME:
> +               if (timespec_get(tp, TIME_UTC) != TIME_UTC)
> +                       return -1;
> +               return 0;
> +       case CLOCK_MONOTONIC:
> +               if (QueryPerformanceFrequency(&pf) == 0)
> +                       return -1;
> +               if (QueryPerformanceCounter(&pc) == 0)
> +                       return -1;
> +               nsec = pc.QuadPart * NS_PER_SEC / pf.QuadPart;
> +               tp->tv_sec = nsec / NS_PER_SEC;
> +               tp->tv_nsec = nsec - tp->tv_sec * NS_PER_SEC;
> +               return 0;
> +       default:
> +               return -1;
> +       }
> +}
> +#define clock_gettime(clock_id, tp) rte_clock_gettime(clock_id, tp)
> +
>  #endif /* _RTE_OS_SHIM_ */
> --
> 2.30.0.vfs.0.2