static void threads_suspend_resume(int prio)
{
int old_prio = k_thread_priority_get(k_current_get());
/* set current thread */
last_prio = prio;
k_thread_priority_set(k_current_get(), last_prio);
/* spawn thread with lower priority */
int spawn_prio = last_prio + 1;
k_tid_t tid = k_thread_spawn(tstack, STACK_SIZE,
thread_entry, NULL, NULL, NULL,
spawn_prio, 0, 0);
/* checkpoint: suspend current thread */
k_thread_suspend(tid);
k_sleep(100);
/* checkpoint: spawned thread shouldn't be executed after suspend */
assert_false(last_prio == spawn_prio, NULL);
k_thread_resume(tid);
k_sleep(100);
/* checkpoint: spawned thread should be executed after resume */
assert_true(last_prio == spawn_prio, NULL);
k_thread_abort(tid);
/* restore environment */
k_thread_priority_set(k_current_get(), old_prio);
}
/**
*
* @brief Software interrupt generating thread
*
* Lower priority thread that, when it starts, it waits for a semaphore. When
* it gets it, released by the main thread, sets up the interrupt handler and
* generates the software interrupt
*
* @return 0 on success
*/
void int_thread(void)
{
k_sem_take(&INTSEMA, K_FOREVER);
irq_offload(latency_test_isr, NULL);
k_thread_suspend(k_current_get());
}