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tests: mutex: fixed a testcase assert failure

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Modify the testcase design to solve some threads
can't lock mutex. Using array index to detect the order
of threads getting mutex instead of delaying.

Fixed #34116

Signed-off-by: Ningx Zhao <ningx.zhao@intel.com>
This commit is contained in:
Ningx Zhao 2021-04-09 13:12:16 +08:00 • committed by Anas Nashif
commit 05e5f4842b
1 changed files with 30 additions and 21 deletions
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51
tests/kernel/mutex/sys_mutex/src/thread_competition.c
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@ -20,7 +20,12 @@ static struct k_thread thread_high_data1;
static K_THREAD_STACK_DEFINE(thread_high_stack2, STACKSIZE);
static struct k_thread thread_high_data2;
SYS_MUTEX_DEFINE(mutex);
static uint32_t flag;
static uint32_t flag[3];
/* The order of threads getting mutex is judged by index
* self addition.
*/
static uint32_t index;
static void low_prio_wait_for_mutex(void *p1, void *p2, void *p3)
{
@ -28,9 +33,11 @@ static void low_prio_wait_for_mutex(void *p1, void *p2, void *p3)
sys_mutex_lock(pmutex, K_FOREVER);
flag = LOW_PRO;
flag[index] = LOW_PRO;
index++;
/* Keep mutex for a while */
k_sleep(K_MSEC(20));
k_sleep(K_MSEC(10));
sys_mutex_unlock(pmutex);
}
@ -41,9 +48,11 @@ static void high_prio_t1_wait_for_mutex(void *p1, void *p2, void *p3)
sys_mutex_lock(pmutex, K_FOREVER);
flag = HIGH_T1;
flag[index] = HIGH_T1;
index++;
/* Keep mutex for a while */
k_sleep(K_MSEC(30));
k_sleep(K_MSEC(10));
sys_mutex_unlock(pmutex);
}
@ -54,9 +63,11 @@ static void high_prio_t2_wait_for_mutex(void *p1, void *p2, void *p3)
sys_mutex_lock(pmutex, K_FOREVER);
flag = HIGH_T2;
flag[index] = HIGH_T2;
index++;
/* Keep mutex for a while */
k_sleep(K_MSEC(20));
k_sleep(K_MSEC(10));
sys_mutex_unlock(pmutex);
}
@ -104,26 +115,24 @@ void test_mutex_multithread_competition(void)
/* Release mutex by current thread */
sys_mutex_unlock(&mutex);
/* 0 ~ 30ms, the mutex should be keep by high prio t1 thread */
k_sleep(K_MSEC(15));
zassert_true(flag == HIGH_T1,
"The highest priority thread failed to take the mutex.");
/* 30ms ~ 50ms, the mutex should be keep by high prio t2 thread */
k_sleep(K_MSEC(15));
zassert_true(flag == HIGH_T2,
"The highest priority thread failed to take the mutex.");
/* 50ms ~ 70ms, the mutex should be keep by low prio thread */
k_sleep(K_MSEC(15));
zassert_true(flag == LOW_PRO,
"The low priority thread failed to take the mutex.");
/* Wait for thread exiting */
k_thread_join(&thread_low_data, K_FOREVER);
k_thread_join(&thread_high_data1, K_FOREVER);
k_thread_join(&thread_high_data2, K_FOREVER);
/* The mutex should be keep by high prio t1 thread */
zassert_true(flag[0] == HIGH_T1,
"The highest priority thread failed to take the mutex.");
/* The mutex should be keep by high prio t2 thread */
zassert_true(flag[1] == HIGH_T2,
"The higher priority thread failed to take the mutex.");
/* The mutex should be keep by low prio thread */
zassert_true(flag[2] == LOW_PRO,
"The low priority thread failed to take the mutex.");
/* Revert priority of the main thread */
k_thread_priority_set(k_current_get(), old_prio);
}