wwbmmm commented on issue #2120:
URL: https://github.com/apache/brpc/issues/2120#issuecomment-1440086114
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那也就是说可以这么实现？在协议层直接预先分配内存，后续从fd读取的数据可以保证不会超过这个大小，这样就能保证block的数量始终保持为1，然后在读取数据的时候通过fetch方法来避免拷贝，我理解这样的改动是最小的？
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> else if (source->length() < sizeof(header_buf) + body_size) { //
预先分配size大小的内存，并作为一个block放入source中，然后将source->length()的内容拷贝进这个block里 source->
reserve_continuous_buffer(sizeof(header_buf) + body_size) return
MakeParseError(PARSE_ERROR_NOT_ENOUGH_DATA); }
可以这样试试
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