如何限制堆大小？(How to limit the heap size?)

 我有时会写Python程序，这很难确定在执行前将使用多少内存。 因此，我有时会调用一个Python程序来尝试分配大量的内存，从而使内核严重交换并降低其他正在运行的进程的性能。 
 
 因此，我希望限制Python堆可以增长多少内存。 当达到极限时，程序可能会崩溃。 最好的方法是什么？ 
 
 如果重要的话，很多代码都用Cython编写，所以它应该考虑到在那里分配的内存。 我没有结婚到一个纯粹的Python解决方案（它不需要便携式），所以在Linux上工作的任何事情都很好。 

I sometimes write Python programs which are very difficult to determine how much memory it will use before execution. As such, I sometimes invoke a Python program that tries to allocate massive amounts of RAM causing the kernel to heavily swap and degrade the performance of other running processes.
 
Because of this, I wish to restrict how much memory a Python heap can grow. When the limit is reached, the program can simply crash. What's the best way to do this? 
 
If it matters, much code is written in Cython, so it should take into account memory allocated there. I am not married to a pure Python solution (it does not need to be portable), so anything that works on Linux is fine.

原文：https://stackoverflow.com/questions/2308091