[GitHub] [brpc] wwbmmm commented on issue #2120: IOBuf是否能支持连续的内存避免内存拷贝

["wwbmmm (via GitHub)" <gi...@apache.org>]

wwbmmm commented on issue #2120:
URL: https://github.com/apache/brpc/issues/2120#issuecomment-1425655728

   > > 可以看看IOBuf的append_user_data函数
   > 
   > 我在数据发送端通过append_user_data避免了发送端的数据拷贝，但是在接收端拿到的就是IOBuf，从网络拿到的数据放到IOBuf这一步已经是不连续的内存了，这里接收端能保证接收到连续的内存来避免拷贝吗
   
   如果要接收端能拿到连续的buf，意味着接收端在接收body之前，需要从协议头里获取body的长度，然后分配出相应长度的内存，再用这段内存来接收网络数据。这个逻辑应该是协议相关的，需要修改协议的实现，仅仅改IOBuf是不够的


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