arch/all-pc/exec/exec_idle.c

   1 /*
   2     Copyright � 2015-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #define DEBUG 0
   7
   8 #include <proto/exec.h>
   9
  10 #define __AROS_KERNEL__
  11
  12 #include "exec_intern.h"
  13
  14 #include "etask.h"
  15
  16 void sleep_function()
  17 {
  18     asm volatile ("sti; hlt;");
  19 }
  20
  21 void IdleTask(struct ExecBase *SysBase)
  22 {
  23     D(
  24         struct Task *thisTask = FindTask(NULL);
  25         struct IntETask *taskIntEtask;
  26         int cpunum = KrnGetCPUNumber();
  27         ULONG lastcount = 0, current;
  28
  29         bug("[IDLE:%03d] %s task started\n", cpunum, thisTask->tc_Node.ln_Name);
  30     )
  31
  32     do
  33     {
  34         /* forever */
  35
  36         Supervisor(sleep_function);
  37
  38         D(
  39             if ((taskIntEtask = GetIntETask(thisTask)) != NULL)
  40             {
  41                 current = taskIntEtask->iet_CpuTime.tv_secs;
  42                 if (current != lastcount)
  43                 {
  44                     lastcount = current;
  45                     bug("[IDLE:%03d] CPU has idled for %d seconds..\n", cpunum, lastcount);
  46                 }
  47             }
  48             else
  49             {
  50                 bug("[IDLE:%03d] Failed to get IntETask\n", cpunum);
  51             }
  52         )
  53     } while(1);
  54 }