TDA4VM: C++ vector operations cause R5F hang-up, how to get rid of this kind of issue?

fan xuzeng

Part Number: TDA4VM

Dear TI colleague:

I have a bunch of c++ code porting to R5F as a decidcated remote service. I found it randomly dead around some vector operations like:

std::vector<struct> sands;

for(i = 0; i < big_num; i++) {

sands.push_back(a_sand);

}

It's not regularly happened issue. mostly dead in the vector operations like push_back, assign...

R5F hang-up when this issue happens. needs reboot to recorver.

I don't know if R5F have some trouble to support C++ features like vector.

Can you please help to analyze the possible reason and let me know what I need to pay attention to in using c++ on R5F?

Thank you very much..

11 months ago

0 Erick Narvaez 11 months ago

TI__Mastermind 32182 points

Hello,

Can you please post the compiler version you are using?

Regards,

Erick

0 George Mock 11 months ago

TI__Guru**** 232700 points

Please increase the size of the stack and the heap as much as you can, and see if that helps.

Thanks and regards,

-George

0 fan xuzeng 11 months ago in reply to Erick Narvaez

Prodigy 70 points

The toolchain version: ti-cgt-arm_20.2.0.LTS

0 George Mock 11 months ago in reply to fan xuzeng

TI__Guru**** 232700 points

What happened when you increased the size of the stack and heap?

Thanks and regards,

-George

0 fan xuzeng 10 months ago in reply to George Mock

Prodigy 70 points

hi George, thank you for the indication. We have addressed the rootcasue, It's an memory leak issue.

I found an incredible memory leak issue and it's related to TI's appInit() interface.

malloc a big size data (> 32KB) after appInit() and then free the data. Do this in a loop the physical memory occupition will increase persistently.

The 2 conditions are necessary:

1. size >= 32KB

2. do appInit()

We are working on QNX OS.

Here is the simple example code and the test result. Can you please help to take a look? Many thanks.

0 fan xuzeng 10 months ago in reply to fan xuzeng

Prodigy 70 points

the implementation of appInit and appDeInit:

0 Nikhil Dasan 10 months ago in reply to fan xuzeng

TI__Guru 57210 points

Hi,

May I know in which SDK version of TDA4VM are you seeing this issue?

Regards,

Nikhil

0 fan xuzeng 10 months ago in reply to Nikhil Dasan

Prodigy 70 points

Thanks for the reply. The SDK version is: ti-processor-sdk-rtos-j721e-evm-07_03_00_07

0 fan xuzeng 10 months ago in reply to Nikhil Dasan

Prodigy 70 points

hi Nikhil, is there any comments? It would be a great help if you can some info or experience about this. Thanks a lot.

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TDA4VM: C++ vector operations cause R5F hang-up, how to get rid of this kind of issue?