[ECOS] Questions about cpuload package and idle thread.

["kbchoi" <kbchoi at snssol dot co dot kr>]

Hello..

    I'm using the sample "cpuload" packages in "/ecos/packages/services".
cyg_cpuload_calibrate( ) which is in the first part of test program is using idle thread.
As I know in "idle thread", the value of idle_thread_loops is increasing continuously.
Because I want to know the action of idle thread, I modified the cyg_cpuload_calibrate( ) as following.

cyg_cpuload_calibrate(cyg_uint32  *calibration)
{
   cyg_handle_t counter;
   cyg_alarm alarm_s;
   cyg_handle_t alarmH;
   cyg_handle_t idleH;
   cyg_uint32 idle_loops_start;
   cyg_priority_t old_priority, cur_priority;
   int   i,j;

   cyg_thread_create(1,
       idle_thread_main,
       0,
       "Calibration idle thread",
       idle_stack,
       sizeof(idle_stack),
       &idleH,
       &thread);

   xc_printf("cyg_cpuload_calibrate #1 : idle_thread_loops = %x \n", idle_thread_loops);
   for (i = 0 ; i < 100000 ; i++)
      j = i;	// useless work..
   xc_printf("cyg_cpuload_calibrate #1 : idle_thread_loops = %x \n", idle_thread_loops);
   cyg_thread_delay(100);
   xc_printf("cyg_cpuload_calibrate #1 : idle_thread_loops = %x \n", idle_thread_loops);
}

And the result of this code is following.

	cyg_cpuload_calibrate #1 : idle_thread_loops = 0
	cyg_cpuload_calibrate #2 : idle_thread_loops = 0
	cyg_cpuload_calibrate #3 : idle_thread_loops = 512bc

Then is idle thread working without cyg_thread_resume( ) ?
And If so, why the second value of idle_thread_loops is "0" ?
These are my questions about cpuload package and idle thread.
Please let me know...
Thanks in advance.

		KBCHOI