/usr/include/boost/beast/core/detail
Edit: /usr/include/boost/beast/core/detail/flat_stream.hpp (1919B)
//
// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/beast
//
#ifndef BOOST_BEAST_CORE_DETAIL_FLAT_STREAM_HPP
#define BOOST_BEAST_CORE_DETAIL_FLAT_STREAM_HPP
#include
#include
#include
namespace boost {
namespace beast {
namespace detail {
class flat_stream_base
{
public:
// Largest buffer size we will flatten.
// 16KB is the upper limit on reasonably sized HTTP messages.
static std::size_t constexpr max_size = 16 * 1024;
// Largest stack we will use to flatten
static std::size_t constexpr max_stack = 8 * 1024;
struct flatten_result
{
std::size_t size;
bool flatten;
};
// calculates the flatten settings for a buffer sequence
template
static
flatten_result
flatten(
BufferSequence const& buffers, std::size_t limit)
{
flatten_result result{0, false};
auto first = net::buffer_sequence_begin(buffers);
auto last = net::buffer_sequence_end(buffers);
if(first != last)
{
result.size = buffer_bytes(*first);
if(result.size < limit)
{
auto it = first;
auto prev = first;
while(++it != last)
{
auto const n = buffer_bytes(*it);
if(result.size + n > limit)
break;
result.size += n;
prev = it;
}
result.flatten = prev != first;
}
}
return result;
}
};
} // detail
} // beast
} // boost
#endif