Enabling TX_THREAD_ENABLE_PERFORMANCE_INFO causes Tx_Thread_Sync example freeze

[vrabcak]

Describe the set-up

• The board (either ST RPN reference or your custom board)

STM32H735G-DK

• IDE or at least the compiler and its version

STM32CubeIDE version 1.5.1

Describe the bug

If I uncomment #define TX_THREAD_ENABLE_PERFORMANCE_INFO in tx_user.h, the Tx_Thread_Sync application freezes - the LEDs stop blinking.
If I comment it out again, the app works fine.

[ALABSTM]

Hi @vrabcak,

Thank you for this report. It will be forwarded to our development teams for deeper analysis. We will get back to you as soon as they provide their feedback. Thank you again.

With regards,

[ALABSTM]

Hi @vrabcak,

Our development teams could reproduce the issue and analyse its root cause. They recommend to clean and rebuild the project each time the tx_user.h file is modified (e.g. after the TX_THREAD_ENABLE_PERFORMANCE_INFO is activated).

Below is their analysis:

• Observed behavior:
  • Initially the project is built without activating the TX_THREAD_ENABLE_PERFORMANCE_INFO flag and the binary is correctly working.
  • Then the TX_THREAD_ENABLE_PERFORMANCE_INFO flag is activated and the project is rebuilt without cleaning.
    • The issue appears.
    • This is observed only in DEBUG mode.
• Analysis:
  • When editing the tx_user.h file and rebuilding the project the IDE will only recompile the files that are including that header file. But ThreadX comes with a set of *.s files that do not include the tx_user.hfile. Thus they are not recompiled.
  • The TX_THREAD_ENABLE_PERFORMANCE_INFO is adding extra fields to the TX_THREAD structure increasing the overall size of the structure.
    • When rebuilding the project the TX_THREAD structures declared in the application will have a greater size.
    • They will occupy extra room in memory that was reserved for the objects generated from the *.s files that were not recompiled.
    • This yields memory corruption.
  • The issue appears in DEBUG mode only because:
    • In RELEASE mode the compiler omits all unused symbols including the fields introduced by the TX_THREAD_ENABLE_PERFORMANCE_INFO flag.
    • While in DEBUG mode there is is no optimization at all.
• Recommendation:
  • The project should be cleaned and rebuilt each time the tx_user.h file is modified.

We hope this helps you solve the problem. Please let us know.

With regards,

[ALABSTM]

Hi @vrabcak,

Any feedback from your side? Does our recommendation help you solve the issue?

With regards,

[ALABSTM]

Hi @vrabcak,

Please allow me to close this issue. Thank you again for your contribution.

With regards,

[ALABSTM]

ST Internal Reference: 98736