| 237,3 → 237,91 |
|---|
| jnz .newupdate |
| |
| ret |
| |
| if 0 |
| |
| MAX_PROIRITY 0 ; highest, used for kernel tasks |
| MAX_USER_PRIORITY 0 ; highest priority for user processes |
| USER_PRIORITY 7 ; default (should correspond to nice 0) |
| MIN_USER_PRIORITY 14 ; minimum priority for user processes |
| IDLE_PRIORITY 15 ; lowest, only IDLE process goes here |
| NR_SCHED_QUEUES 16 ; MUST equal IDLE_PRIORYTY + 1 |
| |
| rdy_head rd 16 |
| |
| |
| align 4 |
| pick_task: |
| |
| xor eax, eax |
| .pick: |
| mov ebx, [rdy_head+eax*4] |
| test ebx, ebx |
| jz .next |
| |
| mov [next_task], ebx |
| test [ebx+flags.billable] |
| jz @F |
| mov [bill_task], ebx |
| @@: |
| ret |
| .next: |
| inc eax |
| jmp .pick |
| |
| |
| ; param |
| ; eax= task |
| ; |
| ; retval |
| ; eax= task |
| ; ebx= queue |
| ; ecx= front if 1 or back if 0 |
| |
| align 4 |
| shed: |
| cmp [eax+.tics_left], 0 ;signed compare |
| mov ebx, [eax+.priority] |
| setg ecx |
| jg @F |
| |
| mov edx, [eax+.tics_quantum] |
| mov [eax+.ticks_left], edx |
| cmp ebx, (IDLE_PRIORITY-1) |
| je @F |
| inc ebx |
| @@: |
| ret |
| |
| ; param |
| ; eax= task |
| |
| align 4 |
| enqueue: |
| call shed ;eax |
| cmp [rdy_head+ebx*4],0 |
| jnz @F |
| |
| mov [rdy_head+ebx*4], eax |
| mov [rdy_tail+ebx*4], eax |
| mov [eax+.next_ready], 0 |
| jmp .pick |
| @@: |
| test ecx, ecx |
| jz .back |
| |
| mov ecx, [rdy_head+ebx*4] |
| mov [eax+.next_ready], ecx |
| mov [rdy_head+ebx*4], eax |
| jmp .pick |
| .back: |
| mov ecx, [rdy_tail+ebx*4] |
| mov [ecx+.next_ready], eax |
| mov [rdy_tail+ebx*4], eax |
| mov [eax+.next_ready], 0 |
| .pick: |
| call pick_proc ;select next task |
| ret |
| |
| end if |
| |