python_stack.c

static void dumpPythonStack() {
    PyFrameObject* frame = PyEval_GetFrame();
    if (!frame) {
        fprintf(stderr, "Got NULL frame...\n");
        return;
    }
    while (frame) {
        int lineno = PyFrame_GetLineNumber(frame);
        PyCodeObject* code = frame->f_code;
        PyObject* filename = code->co_filename;
        Py_ssize_t size;
        char *filename_string;
        filename_string = PyUnicode_AsUTF8AndSize(filename, &size);
        if (!filename_string) {
            fprintf(stderr, "Got NULL filename...\n");
            return;
        }
        fprintf(stdout, "%s:%d\n", filename_string, lineno);
        frame = frame->f_back;
    }
    fflush(stdout);
}