Embedded Microprocessor Extension Design and Optimization for Real-Time Edge Computing

Pseudocode 1

Pseudocode of hardware thread scheduling.

Input: slots_last, tmodes_last

Output: tid, valid, slots_last, tmodes_last

1 valid, s ⟵ NEXT_ENABLED_SLOT(slots_last) // round-robin

2 if valid then

3  slot ⟵ CSR_slot(s)

4  if slot != S and (CSR_tmode(slot) == HA or CSR_tmode(slot) == SA) then

5    tid ⟵ slot

6  else

7   valid, t ⟵ NEXT_ACTIVE_SRTT(tmodes_last)

8   if valid then

9     tid ⟵ t

10    tmodes_last ⟵ t

11   endif

12  endif

13  slots_last ⟵ s

14 endif