[PATCH v2 3/6] eal: add basic rte thread ID equal API

[Konstantin Ananyev]

> Add rte_thread_equal() that tests if two rte_thread_id are equal.
> 
> Signed-off-by: Narcisa Vasile <navasile at microsoft.com>
> Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
> Acked-by: Chengwen Feng <fengchengwen at huawei.com>
> ---
>   lib/eal/include/rte_thread.h | 19 +++++++++++++++++++
>   lib/eal/unix/rte_thread.c    |  6 ++++++
>   lib/eal/version.map          |  1 +
>   lib/eal/windows/rte_thread.c |  6 ++++++
>   4 files changed, 32 insertions(+)
> 
> diff --git a/lib/eal/include/rte_thread.h b/lib/eal/include/rte_thread.h
> index c27e580..de0486d 100644
> --- a/lib/eal/include/rte_thread.h
> +++ b/lib/eal/include/rte_thread.h
> @@ -134,6 +134,25 @@ int rte_thread_create(rte_thread_t *thread_id,
>   __rte_experimental
>   rte_thread_t rte_thread_self(void);
>   
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Check if 2 thread ids are equal.
> + *
> + * @param t1
> + *   First thread id.
> + *
> + * @param t2
> + *   Second thread id.
> + *
> + * @return
> + *   If the ids are equal, return nonzero.
> + *   Otherwise, return 0.
> + */
> +__rte_experimental
> +int rte_thread_equal(rte_thread_t t1, rte_thread_t t2);
> +
>   #ifdef RTE_HAS_CPUSET
>   
>   /**
> diff --git a/lib/eal/unix/rte_thread.c b/lib/eal/unix/rte_thread.c
> index 19c7b80..0304d53 100644
> --- a/lib/eal/unix/rte_thread.c
> +++ b/lib/eal/unix/rte_thread.c
> @@ -183,6 +183,12 @@ struct eal_tls_key {
>   	return pthread_detach((pthread_t)thread_id.opaque_id);
>   }
>   
> +int
> +rte_thread_equal(rte_thread_t t1, rte_thread_t t2)
> +{
> +	return pthread_equal((pthread_t)t1.opaque_id, (pthread_t)t2.opaque_id);
> +}
> +
>   rte_thread_t
>   rte_thread_self(void)
>   {
> diff --git a/lib/eal/version.map b/lib/eal/version.map
> index 22e5c85..4a52484 100644
> --- a/lib/eal/version.map
> +++ b/lib/eal/version.map
> @@ -428,6 +428,7 @@ EXPERIMENTAL {
>   	rte_thread_attr_set_priority;
>   	rte_thread_create;
>   	rte_thread_detach;
> +	rte_thread_equal;
>   	rte_thread_get_affinity_by_id;
>   	rte_thread_get_priority;
>   	rte_thread_join;
> diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
> index b5f2b04..1352513 100644
> --- a/lib/eal/windows/rte_thread.c
> +++ b/lib/eal/windows/rte_thread.c
> @@ -291,6 +291,12 @@ struct thread_routine_ctx {
>   	return 0;
>   }
>   
> +int
> +rte_thread_equal(rte_thread_t t1, rte_thread_t t2)
> +{
> +	return t1.opaque_id == t2.opaque_id;
> +}
> +
>   rte_thread_t
>   rte_thread_self(void)
>   {

Acked-by: Konstantin Ananyev <konstantin.v.ananyev at yandex.ru>