On Thu, May 15, 2008 at 4:14 PM, Philippe Gerum <[EMAIL PROTECTED]> wrote:
> Matthieu wrote:
>>
>> On Thu, 15 May 2008 15:12:32 +0200, "Gilles Chanteperdrix"
>> <[EMAIL PROTECTED]> wrote:
>>> On Thu, May 15, 2008 at 11:28 AM, Gilles Chanteperdrix
>>> <[EMAIL PROTECTED]> wrote:
>>>> On Thu, May 15, 2008 at 8:10 AM, Matthieu
>>>> <[EMAIL PROTECTED]> wrote:
>>>> I think
>>>>> that VxWorks Task Control Block ,implemeted by WIND RIVER, is keeping
>>> the
>>>>> context in hard real-time. That's why I would like to know if there are
>>>>> other possibilities ?
>>>> Yes, there are possibilities: fix your code not to use such internal
>>>> data as the WIND_TCB members.
>>> Even VxWorks documentation considers accessing WIND_TCB directly as a
>>> bad practice. See the doc of taskInfoGet at:
>>>
>>>
>> http://spacegrant.colorado.edu/~dixonc/vxworks/docs/vxworks/ref/taskShow.html
>>> So, what I would agree we can do is implement taskInfoGet.
>>>
>>> --
>>> Gilles
>>
>> Well, what a great issue for me...
>>
>
> The attached patch provides taskInfoGet(). Whether it does provide everything
> you need from the task information block is another issue, but at least, you
> would have the proper infrastructure to add the missing bits to.
You have been fast. One minor concern. The definition of TASK_DESC in
vxworks headers seems to be:
typedef struct /* TASK_DESC - information structure */
{
int td_id; /* task id */
char * td_name; /* name of task */
int td_priority; /* task priority */
int td_status; /* task status */
int td_options; /* task option bits (see below) */
FUNCPTR td_entry; /* original entry point of task */
char * td_sp; /* saved stack pointer */
char * td_pStackBase; /* the bottom of the stack */
char * td_pStackLimit; /* the effective end of the stack */
char * td_pStackEnd; /* the actual end of the stack */
int td_stackSize; /* size of stack in bytes */
int td_stackCurrent;/* current stack usage in bytes */
int td_stackHigh; /* maximum stack usage in bytes */
int td_stackMargin; /* current stack margin in bytes */
int td_errorStatus; /* most recent task error status */
int td_delay; /* delay/timeout ticks */
} TASK_DESC;
--
Gilles
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