rtx51 timeslice

hi every one.

i am new to rtx51. i have one doubt as follows:

if i have a round robin time slice of 5msec. and my code is:

job1 () _task_ 1 {
while (1) {
counter1++;
os_wait (K_TMO, 5, 0);
} }

job2 () _task_ 2 {
while (1) {
counter2++;
os_wait (K_TMO, 3, 0);
} }

if the control is in job1.so, counter1 gets incremented and let us assume the time taken for the increment instruction is 2msec. After that because of os_wait it jumps to task2.

My question is, whether the control goes to task2 after 2msec or 5 msec(completion of timeslice)?

Thanks in advance