Line data    Source code

       1             : //
       2             : // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
       3             : //
       4             : // Distributed under the Boost Software License, Version 1.0. (See accompanying
       5             : // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
       6             : //
       7             : // Official repository: https://github.com/CPPAlliance/http_proto
       8             : //
       9             : 
      10             : #ifndef BOOST_HTTP_PROTO_DETAIL_CIRCULAR_BUFFER_HPP
      11             : #define BOOST_HTTP_PROTO_DETAIL_CIRCULAR_BUFFER_HPP
      12             : 
      13             : #include <boost/http_proto/buffer.hpp>
      14             : 
      15             : namespace boost {
      16             : namespace http_proto {
      17             : namespace detail {
      18             : 
      19             : class circular_buffer
      20             : {
      21             :     unsigned char* base_ = nullptr;
      22             :     std::size_t cap_ = 0;
      23             :     std::size_t in_pos_ = 0;
      24             :     std::size_t in_len_ = 0;
      25             :     std::size_t out_size_ = 0;
      26             : 
      27             : public:
      28             :     using const_buffers_type =
      29             :         const_buffers_pair;
      30             :     using mutable_buffers_type =
      31             :         mutable_buffers_pair;
      32             : 
      33        1512 :     circular_buffer() = default;
      34             :     circular_buffer(
      35             :         circular_buffer const&) = default;
      36             :     circular_buffer& operator=(
      37             :         circular_buffer const&) = default;
      38             : 
      39             :     circular_buffer(
      40             :         void* base,
      41             :         std::size_t capacity) noexcept;
      42             : 
      43             :     std::size_t size() const noexcept;
      44             :     std::size_t max_size() const noexcept;
      45             :     std::size_t capacity() const noexcept;
      46             :     const_buffers_type data() const noexcept;
      47             :     mutable_buffers_type prepare(std::size_t n);
      48             :     void commit(std::size_t n);
      49             :     void consume(std::size_t n) noexcept;
      50             : 
      51             :     // VFALCO I'm not happy with this
      52             :     void uncommit(std::size_t n);
      53             : };
      54             : 
      55             : } // detail
      56             : } // http_proto
      57             : } // boost
      58             : 
      59             : #endif