CC2642R: What is the parameter "heapmgrMemMax" specifies in the heap memory metrics

Mehul Dalal

Part Number: CC2642R

I would like to understand "heapmgrMemMax" definition. As per the link below:

https://software-dl.ti.com/lprf/sdg-latest/html/debugging/ble-common_heap.html

It suggests that it is "The maximum amount of simultaneous allocated memory in blocks (this value must not exceed the size of the heap)". Does simultaneous here means a maximum memory allocated with the contiguous memory or whether simultaneous here mean at a time, maximum memory allocated in the heap?

Is this metric as the one returned in void ICall_heapGetMetrics(u16 *pBlkMax, u16 *pBlkCnt, u16 *pBlkFree, u16 *pMemAlo, u16 *pMemMax, u16 *pMemUb), where [MemMax is same as "heapmgrMemMax". I believe that is true as the next section does specify the same.

over 3 years ago

0 Ryan Brown1 over 3 years ago

TI__Guru**** 217437 points

Hi Mehul,

Here is the latest Debugging Guide from the BLE5-Stack User's Guide. Simultaneous refers to the maximum memory which has been allocated in the heap at any given point during runtime, and is expressed by pMemMax.

Regards,
Ryan

0 Mehul Dalal over 3 years ago in reply to Ryan Brown1

Expert 2180 points

Hi Ryan,

I understand the debugging guide. I need clarification if the simultaneous means contiguous memory only?

+1 Ryan Brown1 over 3 years ago in reply to Mehul Dalal

TI__Guru**** 217437 points

You can further review <sdk directory>\source\ti\ble5stack\heapmgr\rtos_heaposal.h, where HEAPMGR_MEMALO is incremented by the header which is returned during HEAPMGR_MALLOC, then decremented by the same pointer parameter during HEAPMGR_FREE. HEAPMGR_MEMMAX is simply set to HEAPMGR_MEMMAX if this value ever becomes the greater of the two. This would imply that the memory does not need to be contiguous.

Regards,
Ryan

0 Mehul Dalal over 3 years ago in reply to Ryan Brown1

Expert 2180 points

Thanks Ryan.

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CC2642R: What is the parameter "heapmgrMemMax" specifies in the heap memory metrics