[PATCH 2/2] test/threads: add unit test for get set priority

[Tyler Retzlaff]

On Mon, May 23, 2022 at 03:46:13AM -0700, Tyler Retzlaff wrote:
> Add unit tests to exercise and demonstrate rte_thread_{get,set}_priority().
> 
> Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
> ---
>  app/test/test_threads.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 52 insertions(+)
> 
> diff --git a/app/test/test_threads.c b/app/test/test_threads.c
> index e1a2ea5..d369418 100644
> --- a/app/test/test_threads.c
> +++ b/app/test/test_threads.c
> @@ -24,6 +24,56 @@
>  }
>  
>  static int
> +test_thread_priority(void)
> +{
> +	pthread_t id;
> +	rte_thread_t thread_id;
> +	enum rte_thread_priority priority;
> +
> +	thread_id_ready = 0;
> +	RTE_TEST_ASSERT(pthread_create(&id, NULL, thread_main, &thread_id) == 0,
> +		"Failed to create thread");
> +
> +	while (__atomic_load_n(&thread_id_ready, __ATOMIC_ACQUIRE) == 0)
> +		;
> +
> +	priority = RTE_THREAD_PRIORITY_NORMAL;
> +	RTE_TEST_ASSERT(rte_thread_set_priority(thread_id, priority) == 0,
> +		"Failed to set thread priority");
> +	RTE_TEST_ASSERT(rte_thread_get_priority(thread_id, &priority) == 0,
> +		"Failed to get thread priority");
> +	RTE_TEST_ASSERT(priority == RTE_THREAD_PRIORITY_NORMAL,
> +		"Priority set mismatches priority get");
> +
> +	priority = RTE_THREAD_PRIORITY_REALTIME_CRITICAL;
> +#ifndef RTE_EXEC_ENV_WINDOWS
> +	RTE_TEST_ASSERT(rte_thread_set_priority(thread_id, priority) == -ENOTSUP,
> +		"Priority set to critical should fail");
> +	RTE_TEST_ASSERT(rte_thread_get_priority(thread_id, &priority) == 0,
> +		"Failed to get thread priority");
> +	RTE_TEST_ASSERT(priority == RTE_THREAD_PRIORITY_NORMAL,
> +		"Failed set to critical should have retained normal");
> +#else
> +	RTE_TEST_ASSERT(rte_thread_set_priority(thread_id, priority) == 0,
> +		"Priority set to critical should succeed");
> +	RTE_TEST_ASSERT(rte_thread_get_priority(thread_id, &priority) == 0,
> +		"Failed to get thread priority");
> +	RTE_TEST_ASSERT(priority == RTE_THREAD_PRIORITY_REALTIME_CRITICAL,
> +		"Priority get set mistmatches priority get");

mistmatches -> mismatches

will fix this when addressing more substantial feedback

> +#endif
> +
> +	priority = RTE_THREAD_PRIORITY_NORMAL;
> +	RTE_TEST_ASSERT(rte_thread_set_priority(thread_id, priority) == 0,
> +		"Failed to set thread priority");
> +	RTE_TEST_ASSERT(rte_thread_get_priority(thread_id, &priority) == 0,
> +		"Failed to get thread priority");
> +	RTE_TEST_ASSERT(priority == RTE_THREAD_PRIORITY_NORMAL,
> +		"Priority set mismatches priority get");
> +
> +	return 0;
> +}
> +
> +static int
>  test_thread_affinity(void)
>  {
>  	pthread_t id;
> @@ -31,6 +81,7 @@
>  	rte_cpuset_t cpuset0;
>  	rte_cpuset_t cpuset1;
>  
> +	thread_id_ready = 0;
>  	RTE_TEST_ASSERT(pthread_create(&id, NULL, thread_main, &thread_id) == 0,
>  		"Failed to create thread");
>  
> @@ -68,6 +119,7 @@
>  	.teardown = NULL,
>  	.unit_test_cases = {
>  		TEST_CASE(test_thread_affinity),
> +		TEST_CASE(test_thread_priority),
>  		TEST_CASES_END()
>  	}
>  };
> -- 
> 1.8.3.1