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author Vas Crabb <vas@vastheman.com>2024-04-22 08:04:58 +1000
committer Vas Crabb <vas@vastheman.com>2024-04-22 08:04:58 +1000
commit184292b730f4236bd4840e780fdad97ee060ec84 (patch)
tree67902161a465fe92aec78ca502de07092b8cde0f /3rdparty/asio/src/examples/cpp03/allocation/server.cpp
parent24154bc1f00790f344120b3a85175d6f616c5ad0 (diff)
3rdparty/asio: Updated to 1.30.2
Diffstat (limited to '3rdparty/asio/src/examples/cpp03/allocation/server.cpp')
-rw-r--r--3rdparty/asio/src/examples/cpp03/allocation/server.cpp285
1 files changed, 0 insertions, 285 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/allocation/server.cpp b/3rdparty/asio/src/examples/cpp03/allocation/server.cpp
deleted file mode 100644
index ca69460ff14..00000000000
--- a/3rdparty/asio/src/examples/cpp03/allocation/server.cpp
+++ /dev/null
@@ -1,285 +0,0 @@
-//
-// server.cpp
-// ~~~~~~~~~~
-//
-// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff 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)
-//
-
-#include <cstdlib>
-#include <iostream>
-#include <boost/aligned_storage.hpp>
-#include <boost/array.hpp>
-#include <boost/bind/bind.hpp>
-#include <boost/enable_shared_from_this.hpp>
-#include <boost/noncopyable.hpp>
-#include <boost/shared_ptr.hpp>
-#include "asio.hpp"
-
-using asio::ip::tcp;
-
-// Class to manage the memory to be used for handler-based custom allocation.
-// It contains a single block of memory which may be returned for allocation
-// requests. If the memory is in use when an allocation request is made, the
-// allocator delegates allocation to the global heap.
-class handler_memory
- : private boost::noncopyable
-{
-public:
- handler_memory()
- : in_use_(false)
- {
- }
-
- void* allocate(std::size_t size)
- {
- if (!in_use_ && size < storage_.size)
- {
- in_use_ = true;
- return storage_.address();
- }
- else
- {
- return ::operator new(size);
- }
- }
-
- void deallocate(void* pointer)
- {
- if (pointer == storage_.address())
- {
- in_use_ = false;
- }
- else
- {
- ::operator delete(pointer);
- }
- }
-
-private:
- // Storage space used for handler-based custom memory allocation.
- boost::aligned_storage<1024> storage_;
-
- // Whether the handler-based custom allocation storage has been used.
- bool in_use_;
-};
-
-// The allocator to be associated with the handler objects. This allocator only
-// needs to satisfy the C++11 minimal allocator requirements, plus rebind when
-// targeting C++03.
-template <typename T>
-class handler_allocator
-{
-public:
- typedef T value_type;
-
- explicit handler_allocator(handler_memory& mem)
- : memory_(mem)
- {
- }
-
- template <typename U>
- handler_allocator(const handler_allocator<U>& other)
- : memory_(other.memory_)
- {
- }
-
- template <typename U>
- struct rebind
- {
- typedef handler_allocator<U> other;
- };
-
- bool operator==(const handler_allocator& other) const
- {
- return &memory_ == &other.memory_;
- }
-
- bool operator!=(const handler_allocator& other) const
- {
- return &memory_ != &other.memory_;
- }
-
- T* allocate(std::size_t n) const
- {
- return static_cast<T*>(memory_.allocate(sizeof(T) * n));
- }
-
- void deallocate(T* p, std::size_t /*n*/) const
- {
- return memory_.deallocate(p);
- }
-
-//private:
- // The underlying memory.
- handler_memory& memory_;
-};
-
-// Wrapper class template for handler objects to allow handler memory
-// allocation to be customised. The allocator_type typedef and get_allocator()
-// member function are used by the asynchronous operations to obtain the
-// allocator. Calls to operator() are forwarded to the encapsulated handler.
-template <typename Handler>
-class custom_alloc_handler
-{
-public:
- typedef handler_allocator<Handler> allocator_type;
-
- custom_alloc_handler(handler_memory& m, Handler h)
- : memory_(m),
- handler_(h)
- {
- }
-
- allocator_type get_allocator() const
- {
- return allocator_type(memory_);
- }
-
- template <typename Arg1>
- void operator()(Arg1 arg1)
- {
- handler_(arg1);
- }
-
- template <typename Arg1, typename Arg2>
- void operator()(Arg1 arg1, Arg2 arg2)
- {
- handler_(arg1, arg2);
- }
-
-private:
- handler_memory& memory_;
- Handler handler_;
-};
-
-// Helper function to wrap a handler object to add custom allocation.
-template <typename Handler>
-inline custom_alloc_handler<Handler> make_custom_alloc_handler(
- handler_memory& m, Handler h)
-{
- return custom_alloc_handler<Handler>(m, h);
-}
-
-class session
- : public boost::enable_shared_from_this<session>
-{
-public:
- session(asio::io_context& io_context)
- : socket_(io_context)
- {
- }
-
- tcp::socket& socket()
- {
- return socket_;
- }
-
- void start()
- {
- socket_.async_read_some(asio::buffer(data_),
- make_custom_alloc_handler(handler_memory_,
- boost::bind(&session::handle_read,
- shared_from_this(),
- asio::placeholders::error,
- asio::placeholders::bytes_transferred)));
- }
-
- void handle_read(const asio::error_code& error,
- size_t bytes_transferred)
- {
- if (!error)
- {
- asio::async_write(socket_,
- asio::buffer(data_, bytes_transferred),
- make_custom_alloc_handler(handler_memory_,
- boost::bind(&session::handle_write,
- shared_from_this(),
- asio::placeholders::error)));
- }
- }
-
- void handle_write(const asio::error_code& error)
- {
- if (!error)
- {
- socket_.async_read_some(asio::buffer(data_),
- make_custom_alloc_handler(handler_memory_,
- boost::bind(&session::handle_read,
- shared_from_this(),
- asio::placeholders::error,
- asio::placeholders::bytes_transferred)));
- }
- }
-
-private:
- // The socket used to communicate with the client.
- tcp::socket socket_;
-
- // Buffer used to store data received from the client.
- boost::array<char, 1024> data_;
-
- // The memory to use for handler-based custom memory allocation.
- handler_memory handler_memory_;
-};
-
-typedef boost::shared_ptr<session> session_ptr;
-
-class server
-{
-public:
- server(asio::io_context& io_context, short port)
- : io_context_(io_context),
- acceptor_(io_context, tcp::endpoint(tcp::v4(), port))
- {
- session_ptr new_session(new session(io_context_));
- acceptor_.async_accept(new_session->socket(),
- boost::bind(&server::handle_accept, this, new_session,
- asio::placeholders::error));
- }
-
- void handle_accept(session_ptr new_session,
- const asio::error_code& error)
- {
- if (!error)
- {
- new_session->start();
- }
-
- new_session.reset(new session(io_context_));
- acceptor_.async_accept(new_session->socket(),
- boost::bind(&server::handle_accept, this, new_session,
- asio::placeholders::error));
- }
-
-private:
- asio::io_context& io_context_;
- tcp::acceptor acceptor_;
-};
-
-int main(int argc, char* argv[])
-{
- try
- {
- if (argc != 2)
- {
- std::cerr << "Usage: server <port>\n";
- return 1;
- }
-
- asio::io_context io_context;
-
- using namespace std; // For atoi.
- server s(io_context, atoi(argv[1]));
-
- io_context.run();
- }
- catch (std::exception& e)
- {
- std::cerr << "Exception: " << e.what() << "\n";
- }
-
- return 0;
-}