How to stop thread from executing py::eval_file

[Chaojimengnan]

I have a question about how to stop a thread when it is executing a python script.

Like the following :

#include <iostream>

#include <pybind11/embed.h>
#include <thread>

void thread1()
{
    autopy::py::scoped_interpreter const guard {};
    autopy::py::eval_file("1.py"); // It takes a long time

    std::cout << "over!\n";
}

int main()
{
    std::jthread my_thread(thread1);
    std::this_thread::sleep_for(std::chrono::seconds(5));
    std::cout << "stop!\n";

    // How do I stop thread1 from executing py::eval_file ? 

    std::cout << "ok\n";
    std::this_thread::sleep_for(std::chrono::seconds(50));

    return 0;
}

[Chaojimengnan]

OK, I finally found a solution, https://stackoverflow.com/questions/1420957/stopping-embedded-python

The code is as follows:

#include <iostream>

#include <pybind11/embed.h>
#include <thread>

void thread1()
{
    py::scoped_interpreter const guard {};
    py::eval_file("1.py"); // It takes a long time

    std::cout << "over!\n";
}

int main()
{
    std::jthread my_thread(thread1);
    std::this_thread::sleep_for(std::chrono::seconds(5));
    std::cout << "stop!\n";

    // How do I stop thread1 from executing py::eval_file ? 
    {
         py::gil_scoped_acquire acquire;
         Py_AddPendingCall([](void*) {
             PyErr_SetString(PyExc_Exception, "Exit!");
             return -1;
         }, nullptr);
    }

    std::cout << "ok\n";
    std::this_thread::sleep_for(std::chrono::seconds(50));

    return 0;
}