rom/task/QueryTaskTagList.c

   1 /*
   2     Copyright © 2015-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #define DEBUG 0
   7
   8 #include <aros/debug.h>
   9 #include <exec/types.h>
  10 #include <aros/libcall.h>
  11 #include <proto/utility.h>
  12 #include <resources/task.h>
  13
  14 #include "etask.h"
  15
  16 #include "task_intern.h"
  17
  18 /*****************************************************************************
  19
  20     NAME */
  21 #include <proto/task.h>
  22
  23         AROS_LH2(void, QueryTaskTagList,
  24
  25 /*  SYNOPSIS */
  26         AROS_LHA(struct Task *, task, A0),
  27         AROS_LHA(struct TagItem *, tagList, A1),
  28
  29 /*  LOCATION */
  30         struct TaskResBase *, TaskResBase, 6, Task)
  31
  32 /*  FUNCTION
  33
  34         Provides information about selected system Task
  35
  36     INPUTS
  37
  38         Function takes an array of tags. Data is returned for each tag. See
  39         specific tag description.
  40
  41     TAGS
  42
  43         TaskTag_CPUNumber - (IPTR *) Returns the CPU Number the task is currently running on
  44         TaskTag_CPUAffinity - (IPTR *) Returns the CPU Affinity mask
  45         TaskTag_CPUTime - (struct timeval *) Returns the amount of cpu time a task has used .
  46         TaskTag_StartTime - (struct timeval *) Returns the time the task was launched .
  47
  48     RESULT
  49
  50         None
  51
  52     NOTES
  53
  54     EXAMPLE
  55
  56     BUGS
  57
  58     SEE ALSO
  59
  60     INTERNALS
  61
  62 ******************************************************************************/
  63 {
  64     AROS_LIBFUNC_INIT
  65
  66     struct TagItem * Tag = NULL;
  67     struct Library *UtilityBase = TaskResBase->trb_UtilityBase;
  68     struct IntETask *task_et = GetIntETask(task);
  69
  70     D(
  71         bug("[TaskRes] %s: task @ 0x%p\n", __func__, task);
  72         bug("[TaskRes] %s: taglist @ 0x%p\n", __func__, tagList);
  73     )
  74
  75     /* This is the default implementation */
  76
  77     while ((Tag = NextTagItem(&tagList)) != NULL)
  78     {
  79         switch(Tag->ti_Tag)
  80         {
  81         case(TaskTag_CPUNumber):
  82 #if defined(__AROSEXEC_SMP__)
  83             *((IPTR *)Tag->ti_Data) = task_et->iet_CpuNumber;
  84 #else
  85             *((IPTR *)Tag->ti_Data) = 0;
  86 #endif
  87             break;
  88         case(TaskTag_CPUAffinity):
  89 #if defined(__AROSEXEC_SMP__)
  90             {
  91                 int i, count = KrnGetCPUCount();
  92                 for (i = 0; i < count; i ++)
  93                 {
  94                     if (KrnCPUInMask(i, task_et->iet_CpuAffinity))
  95                         KrnGetCPUMask(i, (void *)Tag->ti_Data);
  96                 }
  97             }
  98 #endif
  99             break;
 100         case(TaskTag_CPUTime):
 101             {
 102                 struct timeval *storeval = (struct timeval *)Tag->ti_Data;
 103                 if (task_et)
 104                 {
 105                     storeval->tv_micro = (task_et->iet_CpuTime.tv_nsec + 500) / 1000;
 106                     storeval->tv_secs  = task_et->iet_CpuTime.tv_sec;
 107                 }
 108             }
 109             break;
 110         case(TaskTag_CPUUsage):
 111             {
 112                 if (task_et)
 113                     *(ULONG *)(Tag->ti_Data) = task_et->iet_CpuUsage;
 114                 else
 115                     *(ULONG *)(Tag->ti_Data) = 0;
 116             }
 117             break;
 118         case(TaskTag_StartTime):
 119             {
 120                 struct timeval *storeval = (struct timeval *)Tag->ti_Data;
 121                 if (task_et)
 122                 {
 123                     storeval->tv_micro = (task_et->iet_StartTime.tv_nsec + 500) / 1000;
 124                     storeval->tv_secs  = task_et->iet_StartTime.tv_sec;
 125                 }
 126             }
 127             break;
 128         }
 129     }
 130
 131     AROS_LIBFUNC_EXIT
 132 } /* QueryTaskTagList() */