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          30 :     circular_buffer() = default;
      29             :     circular_buffer(
      30             :         circular_buffer const&) = default;
      31             :     circular_buffer& operator=(
      32             :         circular_buffer const&) = default;
      33             : 
      34             :     circular_buffer(
      35             :         void* base,
      36             :         std::size_t capacity) noexcept;
      37             : 
      38             :     bool empty() const noexcept;
      39             :     std::size_t size() const noexcept;
      40             :     std::size_t capacity() const noexcept;
      41             :     const_buffers_pair data() const noexcept;
      42             :     mutable_buffers_pair prepare(std::size_t n);
      43             :     void commit(std::size_t n);
      44             :     void uncommit(std::size_t n);
      45             :     void consume(std::size_t n) noexcept;
      46             : };
      47             : 
      48             : } // detail
      49             : } // http_proto
      50             : } // boost
      51             : 
      52             : #endif