共享内存、零拷贝、内存映射

#mmap

import os
import mmap
import array

m = mmap.mmap(os.open("test.txt", os.O_RDWR), 8192, "MAP_SHARED")
m.write(bytearray([1,2,3,4]))
m.seek(0)
m.write(bytearray([5,6,7,8]))
b = array.array('b', m.read(8)).tolist()
print(b)
m.close()