[PATCH v4 2/3] test: add rte control thread create API test

[Tyler Retzlaff <roretzla@linux.microsoft.com>]

Duplicate the rte_ctrl_thread_create test adapted to use
rte_control_thread create to keep both apis under test until
rte_ctrl_thread_create is removed.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 app/test/test_lcores.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/app/test/test_lcores.c b/app/test/test_lcores.c
index a6bb412..375ecdb 100644
--- a/app/test/test_lcores.c
+++ b/app/test/test_lcores.c
@@ -8,6 +8,7 @@
 #include <rte_common.h>
 #include <rte_errno.h>
 #include <rte_lcore.h>
+#include <rte_thread.h>
 
 #include "test.h"
 
@@ -352,6 +353,18 @@ static void *ctrl_thread_loop(void *arg)
 	return NULL;
 }
 
+static uint32_t control_thread_loop(void *arg)
+{
+	struct thread_context *t = arg;
+
+	printf("Control thread running successfully\n");
+
+	/* Set the thread state to DONE */
+	t->state = Thread_DONE;
+
+	return 0;
+}
+
 static int
 test_ctrl_thread(void)
 {
@@ -379,6 +392,32 @@ static void *ctrl_thread_loop(void *arg)
 }
 
 static int
+test_control_thread(void)
+{
+	struct thread_context ctrl_thread_context;
+	struct thread_context *t;
+
+	/* Create one control thread */
+	t = &ctrl_thread_context;
+	t->state = Thread_INIT;
+	if (rte_control_thread_create((rte_thread_t *)&t->id, "test_control_threads",
+					NULL, control_thread_loop, t) != 0)
+		return -1;
+
+	/* Wait till the control thread exits.
+	 * This also acts as the barrier such that the memory operations
+	 * in control thread are visible to this thread.
+	 */
+	rte_thread_join((rte_thread_t){(uintptr_t)t->id}, NULL);
+
+	/* Check if the control thread set the correct state */
+	if (t->state != Thread_DONE)
+		return -1;
+
+	return 0;
+}
+
+static int
 test_lcores(void)
 {
 	unsigned int eal_threads_count = 0;
@@ -411,6 +450,9 @@ static void *ctrl_thread_loop(void *arg)
 	if (test_ctrl_thread() < 0)
 		return TEST_FAILED;
 
+	if (test_control_thread() < 0)
+		return TEST_FAILED;
+
 	return TEST_SUCCESS;
 }
 
-- 
1.8.3.1