What will be the behavior if I call app_timer_start() again when the app timer is not timeout?

[Young]

Hi support team:

I develop my project with sdk 15.2.0 on nrf52832.  Now I met a situation that I might need to call app_timer_start() again before the same timer is timeout. 

I debuged using the following code snippet and checked the return values code1 and code2. Both of them is 0, which means it is successfully started at the second time, right?

Now I don't what will be the havior if I call them like this. And if I wanna start the app timer but I donnot know whether it is running, how should I do?

code1 = app_timer_start(m_timer, APP_TIMER_TICKS(_TIMEOUT), NULL);
code2 = app_timer_start(m_timer, APP_TIMER_TICKS(_TIMEOUT), NULL);
NRF_LOG_INFO("CODE: %d, %d", code1, code2);

[Einarh]

Hello

According to the documentation: 

When calling this method on a timer that is already running, the second start operation is ignored.

Best regards,

Einar