Boost asio socket: the fastest way to read a file from your hard drive?

Question

So I tried:

int buff_length = 8192;
ifstream stream;
char* buffer = new char[buff_length];

stream.open( path.string().c_str(), ios::binary );

boost::system::error_code ignored_error;

while (stream)
{
    stream.read(buffer, buff_length);
    boost::asio::write(*socket, boost::asio::buffer(buffer, stream.gcount()),
                            boost::asio::transfer_all(), ignored_error);  
}

I wonder how you do it - how to do it faster?

My application should work through Windows, Linux and Mac OS. That is why I use boost alot. I use abfor testing. I want to get 2 or at least 1.5 times faster when reading and sending files. Maybe Boost :: Iostream can help me how?

Answer 1

Not quite sure what you need, but to answer your question about fast reading files, you can map the file to memory .

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Boost.Interprocess .

Answer 2

, sendfile (2), Linux. .

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Answer 3

boost:: asio TransmitFile, . example