[PATCH] rtems: Fix _Rate_monotonic_Renew_deadline()

[Kuan Hsun Chen]

Hi all,

Like sp71 and sp77. I will prepare sp78 for this overflow testing.

Best,
Kuan-Hsun

2017-01-25 16:10 GMT+01:00 Kuan Hsun Chen <kuan-hsun.chen at tu-dortmund.de>:

> Hi Sebastian,
>
> Should I test the overflow condition together with sp69 or prepare a new
> test for this matter?
>
> Best,
> Kuan-Hsun
>
> 2017-01-25 15:53 GMT+01:00 Sebastian Huber <sebastian.huber at embedded-
> brains.de>:
>
>>
>>
>> On 25/01/17 15:48, Kuan-Hsun Chen wrote:
>>
>>> ---
>>>   cpukit/rtems/src/ratemontimeout.c | 7 +++++--
>>>   1 file changed, 5 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/cpukit/rtems/src/ratemontimeout.c
>>> b/cpukit/rtems/src/ratemontimeout.c
>>> index bcc4ccf..079ad41 100644
>>> --- a/cpukit/rtems/src/ratemontimeout.c
>>> +++ b/cpukit/rtems/src/ratemontimeout.c
>>> @@ -9,7 +9,7 @@
>>>    *  COPYRIGHT (c) 1989-2009.
>>>    *  On-Line Applications Research Corporation (OAR).
>>>    *
>>> - *  COPYRIGHT (c) 2016 Kuan-Hsun Chen.
>>> + *  COPYRIGHT (c) 2017 Kuan-Hsun Chen.
>>>
>>
>> This should be 2016, 2017 or 2016-2017.
>>
>>    *
>>>    *  The license and distribution terms for this file may be
>>>    *  found in the file LICENSE in this distribution or at
>>> @@ -30,7 +30,10 @@ static void _Rate_monotonic_Renew_deadline(
>>>   {
>>>     uint64_t deadline;
>>>
>>> -  ++the_period->postponed_jobs;
>>> +  /** stay at 0xffffffff if postponed_jobs is going to overflow */
>>>
>>
>> /** is a Doxygen comment.
>>
>> +  if ( the_period->postponed_jobs != UINT_MAX ) {
>>> +    ++the_period->postponed_jobs;
>>> +  }
>>>
>>
>> Type is uint32_t, not unsigned int. So, use UINT32_MAX. Maybe
>>
>>  Empty lines between blocks.
>>
>>     the_period->state = RATE_MONOTONIC_EXPIRED;
>>>
>>>     deadline = _Watchdog_Per_CPU_insert_relative(
>>>
>>
>> We need a test case for this overflow condition. You probably have to
>> modify the_period->postponed_jobs by hand in the test case to avoid
>> extremely long test run times.
>>
>> --
>> Sebastian Huber, embedded brains GmbH
>>
>> Address : Dornierstr. 4, D-82178 Puchheim, Germany
>> Phone   : +49 89 189 47 41-16
>> Fax     : +49 89 189 47 41-09
>> E-Mail  : sebastian.huber at embedded-brains.de
>> PGP     : Public key available on request.
>>
>> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>>
>> _______________________________________________
>> devel mailing list
>> devel at rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>>
>
>
>
> --
> M.Sc. Kuan-Hsun Chen
>
> TU Dortmund
> Department of Computer Science 12
> Design Automation of Embedded Systems
> Otto-Hahn-Strasse 16, Room 102
>
> 44227 Dortmund
> Germany
>
> Phone:  *+49 231 755 6124 <+49%20231%207556124>*
> Mail:   kuan-hsun.chen at tu-dortmund.de <kuan-hsun.chen at tu-dortmund.de>
>



-- 
M.Sc. Kuan-Hsun Chen

TU Dortmund
Department of Computer Science 12
Design Automation of Embedded Systems
Otto-Hahn-Strasse 16, Room 102

44227 Dortmund
Germany

Phone:  *+49 231 755 6124*
Mail:   kuan-hsun.chen at tu-dortmund.de <kuan-hsun.chen at tu-dortmund.de>
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