[En-Nut-Discussion] How much memory is still available in the stack of a thread?

[Rodrigue]

It was just to propose a way to optimize the stack space consumed by a
thread...
Thank you for the link, some informations were very instructive!

Please, could you tell me what represents the variable var in the following
operation:
u_int var =  (uptr_t) runningThread->td_sp - (uptr_t) 
 

Harald Kipp wrote:
> 
> Each thread has its own stack space, taken from the global heap.
> http://www.vs.inf.ethz.ch/edu/wsn/tut/ch4-5.pdf
> 
> Why do you need to know the available stack space of a single thread? 
> Just asking, because I assume that things are more complex than you are 
> possibly aware off.
> 
> Harald
> 
> Rodrigue schrieb:
>> I'm not sure but may be by using the variable runningThread:
>>    u_int avaiblememory =  (uptr_t) runningThread->td_sp - (uptr_t)
>> runningThread->td_memory;
>>
>> with uptr_t td_sp;               /*!< \brief Stack pointer. */
>>      u_char *td_memory;          /*!< \brief Pointer to heap memory used
>> for
>> stack. */
>>
>> Does each thread has is own heap memory? I tought that it was global and
>> located at the end of the external memory growing downwards...
>>
>>   
> 
> _______________________________________________
> http://lists.egnite.de/mailman/listinfo/en-nut-discussion
> 
> 

-- 
View this message in context: http://www.nabble.com/How-much-memory-is-still-available-in-the-stack-of-a-thread--tf3639143.html#a10178771
Sent from the MicroControllers - Ethernut mailing list archive at Nabble.com.