docs: 我想更改_thread模块中的任务创建方式，我应该在哪里找到创建该模块的文件

[monskate]

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我想更改_thread模块中的任务创建方式，我应该在哪里找到创建该模块的文件

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[robert-hh]

Please use English for contributions.

[robert-hh]

Translated: I want to change the way tasks are created in the _thread module, where should I find the file that creates it?

The file is port-specific. Usually it's in mpthreadport.c and mpthreadport.h of the respective port directory.

[monskate]

Translated: I want to change the way tasks are created in the _thread module, where should I find the file that creates it?

The file is port-specific. Usually it's in mpthreadport.c and mpthreadport.h of the respective port directory.

But it is not generated in the same way as other generated modules. Do I only need to change the function name to add a function that uses _thread in python?

[robert-hh]

I do not understand your question. A python function to be run in a thread is just a normal function. Only the way it is started as a thread is different. Examples:
https://github.com/micropython/micropython/blob/master/tests/thread/thread_start1.py
https://github.com/micropython/micropython/blob/master/tests/thread/thread_start2.py

And more in this directory. The MicroPyhton documentation about threading refers to the CPython documentation. You may also look there.

[monskate]

I do not understand your question. A python function to be run in a thread is just a normal function. Only the way it is started as a thread is different. Examples: https://github.com/micropython/micropython/blob/master/tests/thread/thread_start1.py https://github.com/micropython/micropython/blob/master/tests/thread/thread_start2.py

And more in this directory. The MicroPyhton documentation about threading refers to the CPython documentation. You may also look there.

I want to be able to set the size and core of the created thread and destroy the specified task. I want to change the logic of thread creation in the underlying firmware. Now I use _thread in micropython to create threads, which cannot achieve the above functions.

[robert-hh]

I want to be able to set the size and core of the created thread and destroy the specified task.

What do you call the size & core of the created thread. You can set the stacksize by calling _thread.stacksize(n) with the new stacksize before starting the thread. The MCU core on which the thread executes is defined by the port. Usually you cannot change it. The main module for _threading is in py/modthread.c. It call port-specific function in the port's mpthreadport .c.

Which port do you use? ESP32? RP2 Pico?

[monskate]

I want to be able to set the size and core of the created thread and destroy the specified task.

What do you call the size & core of the created thread. You can set the stacksize by calling _thread.stacksize(n) with the new stacksize before starting the thread. The MCU core on which the thread executes is defined by the port. Usually you cannot change it. The main module for _threading is in py/modthread.c. It call port-specific function in the port's mpthreadport .c.

Which port do you use? ESP32? RP2 Pico?

I am using esp32s3. When programming in micro python, I created some threads, but sometimes I get the error
"A fatal error occurred. The crash dump printed below may be used to help
determine what caused it. If you are not already running the most recent
version of MicroPython, consider upgrading. New versions often fix bugs.

To learn more about how to debug and/or report this crash visit the wiki
page at: https://github.com/micropython/micropython/wiki/ESP32-debugging

MPY version : 7fd9f115-dirty on 2025-03-09
IDF version : 7fd9f115-dirty
Machine : Generic ESP32S3 module with Octal-SPIRAM with ESP32S3
ERROR A stack overflow in task mp_thread has been detected.
Backtrace: 0x40376472:0x3fcdbff0 0x403870a9:0x3fcdc010 0x403872ee:0x3fcdc030 0x40388ed5:0x3fcdc0a0 0x403873ac:0x3fcdc0c0 0x403873a2:0xa5a5a5a5 |<-CORRUPTED
ELF file SHA256: cca6f49abd896d4b"
So I want to modify the underlying firmware to create and delete specified tasks gracefully

[robert-hh]

The thread created by the threading module are called mp_thread in the RTOS context.. So one of the created threads signals a stack overflow. Did you try to increase the stack size of the threads using _thread.stacksize(n) before starting the the thread?