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求基于硬件dma不同节点间的零拷贝的方法，硬件dma的管控可以做客制化修改。这样可以让不同硬件之间通过dma的方式实现0拷贝。 最好的方法是能够给予DDS或者扩展目前的现有的DDS，类似fastDDS中的共享内存，只是底层的方式不一样。