Write down your ideas. Do not trust your memory however good it may be!
要记载下你的主意,不要依附你的记忆力,不论它有多好。
However, Shared memory does not provide any access control for processes that use it.
不过,共享内存不为使用它的进程提供任何访问控制。
However, Shared memory segments still can not cross quadrant boundaries.
不过,共享内存段依然不能跨越象限边界。
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