[Tinyos-help] confusing with the sleep atomic block

[张荣雨]

Hi,
I used to record the moment the CPU go to sleep and wake up,and compute the sleep time and wake up time.And in the task loop the code like this:

      atomic
      {
 while ((nextTask = popTask()) == NO_TASK)
 {
  sleep_Flag =TRUE;                        /////////////////////
  s_Moment = call LocalTime.get();  
    call McuSleep.sleep();
   }
      }
     atomic
     {
 oldFlag = sleep_Flag;
  sleep_Flag =FALSE;
     }
    if(oldFlag)
     {
 active_Time += s_Moment - w_Moment;
 w_Moment = call LocalTime.get();     //
 sleep_Time += w_Moment - s_Moment;
    }
 
The result appers that the active time is two times as great as the sleep time,and it seems incorrect.And when I put the code int the MCUSleep atomic block as this:
 
    atomic
      {
 while ((nextTask = popTask()) == NO_TASK)
 {
  s_Moment = call LocalTime.get();   
  active_Time += s_Moment - w_Moment;
   call McuSleep.sleep();
   w_Moment = call LocalTime.get();     //
   sleep_Time += w_Moment - s_Moment;
 }
      }
the result seems the active time very small.And I'am confusing with the huge difference between them.
1) Why they are so different?In my mind It should be the some.
2)Without finishing the atomic block,can the CPU go to sleep?
 
Thanks for any help.
 


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