在 C++ 中嵌入 Python 在运行时崩溃 [英] Embedding Python in C++ crashes during running-time

问题描述

这个问题我已经问了太久了.现在我搜索了这个，它已经工作了一段时间，但是然后它在一个随机的地方坠毁.我认为问题是死锁什么的.

I've been around this question for way too long. Now I searched this and it was working for a while but it then crashed at a random place. I think that the problem is a deadlock or something.

所以请有人告诉我我做错了什么:

So please, someone tell me what I'm doing wrong:

1. 我创建了一个全局变量:

1. I make a global variable:

static int gil_init = 0; 

在程序开始时，我调用了 Py_Initialize().这个启动函数在一个会话中被多次调用，但由于 Py_Initialize() 是一个非操作，如果 Python 已经初始化，我认为这里没有问题.

At the start of the program I call Py_Initialize(). This start function is called multiple times in one session but since Py_Initialize() is a non-op if Python is already initialized I don't think there's a problem here.

从三个函数中，我对 Python/C API 函数进行了大量调用 -py_embed(...)(一次只有一个调用).下一个代码出现在从每个线程调用的 py_embed() 函数中:

From three functions I make lots of calls into the Python/C API function -py_embed(...) (there's only one at a time calling). The next code is present in the py_embed() function that is called from each thread:

if (!gil_init) {
    gil_init = 1;
    PyEval_InitThreads();
    PyEval_SaveThread();
}
state = PyGILState_Ensure();
// Call Python/C API functions...
//pValue= PyObject_CallObject(pFunc, pArgs2);  Crash is always given here
PyGILState_Release(state);

哦，崩溃发生在其中一个函数中，但不是我第一次调用它，这很奇怪.这就是为什么我说它在运行时间的随机位置.

Oh and the crash takes place in one of the functions, but not the first time I call it which is strange. That's why I said its at a random place during running time.

理论上，基于 C Api 的参考手册它应该可以工作..我做错了什么?

In theory, and based in the reference manual of the C Api it should be working.. What am I doing wrong?

我不调用 Py_Finalize() 因为我遇到的这个问题

推荐答案

我想我已经解决了(不能肯定，但直到现在还没有崩溃).

I think I solved it (can't say for sure but until now it hasn't crashed).

问题是我正在取消引用一些借用的引用.我注意到这一点是因为某些对象的引用计数是 2 或 3.

The problem was that I was dereferenciating some borrowed references. I noticed this because the reference count of some objects were 2 or 3.

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