如何在python中设置线程或进程的内存限制?

问题描述：

我正在用Python编写程序，该程序将能够在某种沙箱中运行不受信任的python代码.因此，我需要一种方法来限制不受信任的代码可以分配的内存量.现在，我可以通过覆盖沙盒环境中的默认python数据结构来限制range()，列表，字典和其他对象的最大长度.

I'm writing program in Python which would be able to run untrusted python code in some kind of sandbox. So, I need a way to limit the amount of memory that untrusted code can allocate. At now I can limit the maximum length of range(), list, dictionary and the others by overriding default python data structures in my sandboxed environment.

有什么想法吗?

答

在Unix下，您可以使用 resource.setrlimit(resource.RLIMIT_AS，...)进行限制进程可能占用的地址空间的最大区域(以字节为单位)."

Under Unix, you could use resource.setrlimit(resource.RLIMIT_AS, ...) to restrict "the maximum area (in bytes) of address space which may be taken by the process."

import sys
import resource
soft, hard = 10**7, 10**7
# soft, hard = 10**8, 10**8   # uncommenting this allows program to finish
resource.setrlimit(resource.RLIMIT_AS,(soft, hard))
memory_hog = {}
try:
    for x in range(10000):
        print(x)
        memory_hog[str(x)]='The sky is so blue'
except MemoryError as err:
    sys.exit('memory exceeded')
    # memory exceeded

如何在python中设置线程或进程的内存限制?

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