void mutex_bench(void)
{
u32_t mutex_lock_start_tsc;
u32_t mutex_lock_end_tsc;
u32_t mutex_lock_diff = 0;
u32_t mutex_unlock_start_tsc;
u32_t mutex_unlock_end_tsc;
u32_t mutex_unlock_diff = 0;
for (int i = 0; i < 1000; i++) {
mutex_lock_start_tsc = OS_GET_TIME();
k_mutex_lock(&mutex0, 100);
mutex_lock_end_tsc = OS_GET_TIME();
mutex_unlock_start_tsc = OS_GET_TIME();
k_mutex_unlock(&mutex0);
mutex_unlock_end_tsc = OS_GET_TIME();
mutex_lock_diff += (mutex_lock_end_tsc - mutex_lock_start_tsc);
mutex_unlock_diff += (mutex_unlock_end_tsc -
mutex_unlock_start_tsc);
}
PRINT_F("Mutex lock", mutex_lock_diff / 1000,
SYS_CLOCK_HW_CYCLES_TO_NS(mutex_lock_diff / 1000));
PRINT_F("Mutex unlock", mutex_unlock_diff / 1000,
SYS_CLOCK_HW_CYCLES_TO_NS(mutex_unlock_diff / 1000));
}
void thread_sem1_test(void *p1, void *p2, void *p3)
{
k_sem_give(&sem_bench); /* sync the 2 threads*/
__read_swap_end_tsc_value = 1;
sem_start_time = OS_GET_TIME();
k_sem_take(&sem_bench, 10);
}
void thread_sem0_give_test(void *p1, void *p2, void *p3)
{
k_sem_take(&sem_bench, 10);/* To sync threads */
/* test_time2 = OS_GET_TIME(); */
/* To make sure that the sem give will cause a swap to occur */
k_thread_priority_set(sem1_tid, 1);
__read_swap_end_tsc_value = 1;
sem_give_start_time = OS_GET_TIME();
k_sem_give(&sem_bench_1);
}
NULL, NULL, 1 /*priority*/, 0, 50); consumer_get_w_cxt_switch_tid = k_thread_create(&my_thread_0, my_stack_area_0, STACK_SIZE, thread_consumer_get_msgq_w_cxt_switch, NULL, NULL, NULL, 2 /*priority*/, 0, 50); k_sleep(2000); /* make the main thread sleep */ k_thread_abort(producer_get_w_cxt_switch_tid); __msg_q_get_w_cxt_end_tsc = (__common_var_swap_end_tsc); /*******************************************************************/ /* Msg queue for get*/ /* from previous step got the msg_q full now just do a simple read*/ msg_q_get_wo_cxt_start_tsc = OS_GET_TIME(); received_data_get = k_msgq_get(&benchmark_q_get, &received_data_consumer, K_NO_WAIT); msg_q_get_wo_cxt_end_tsc = OS_GET_TIME(); /*******************************************************************/ /* Msg box to benchmark sync put */ thread_mbox_sync_put_send_tid = k_thread_create(&my_thread, my_stack_area, STACK_SIZE,
void semaphore_bench(void)
{
/* Thread yield*/
sem0_tid = k_thread_create(&my_thread, my_stack_area,
STACK_SIZE,
thread_sem0_test, NULL, NULL, NULL,
2 /*priority*/, 0, 0);
sem1_tid = k_thread_create(&my_thread_0, my_stack_area_0,
STACK_SIZE, thread_sem1_test,
NULL, NULL, NULL,
2 /*priority*/, 0, 0);
k_sleep(1000);
/* u64_t test_time1 = _tsc_read(); */
sem_end_time = (__common_var_swap_end_tsc);
u32_t sem_cycles = sem_end_time - sem_start_time;
sem0_tid = k_thread_create(&my_thread, my_stack_area,
STACK_SIZE, thread_sem0_give_test,
NULL, NULL, NULL,
2 /*priority*/, 0, 0);
sem1_tid = k_thread_create(&my_thread_0, my_stack_area_0,
STACK_SIZE, thread_sem1_give_test,
NULL, NULL, NULL,
2 /*priority*/, 0, 0);
k_sleep(1000);
sem_give_end_time = (__common_var_swap_end_tsc);
u32_t sem_give_cycles = sem_give_end_time - sem_give_start_time;
/* Semaphore without context switch*/
u32_t sem_give_wo_cxt_start = OS_GET_TIME();
k_sem_give(&sem_bench);
u32_t sem_give_wo_cxt_end = OS_GET_TIME();
u32_t sem_give_wo_cxt_cycles = sem_give_wo_cxt_end -
sem_give_wo_cxt_start;
u32_t sem_take_wo_cxt_start = OS_GET_TIME();
k_sem_take(&sem_bench, 10);
u32_t sem_take_wo_cxt_end = OS_GET_TIME();
u32_t sem_take_wo_cxt_cycles = sem_take_wo_cxt_end -
sem_take_wo_cxt_start;
/* TC_PRINT("test_time1 , %d cycles\n", (u32_t)test_time1); */
/* TC_PRINT("test_time2 , %d cycles\n", (u32_t)test_time2); */
PRINT_F("Semaphore Take with context switch",
sem_cycles, SYS_CLOCK_HW_CYCLES_TO_NS(sem_cycles));
PRINT_F("Semaphore Give with context switch",
sem_give_cycles, SYS_CLOCK_HW_CYCLES_TO_NS(sem_give_cycles));
PRINT_F("Semaphore Take without context switch",
sem_take_wo_cxt_cycles,
SYS_CLOCK_HW_CYCLES_TO_NS(sem_take_wo_cxt_cycles));
PRINT_F("Semaphore Give without context switch",
sem_give_wo_cxt_cycles,
SYS_CLOCK_HW_CYCLES_TO_NS(sem_give_wo_cxt_cycles));
}