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-rw-r--r--3rdparty/asio/src/examples/cpp03/fork/process_per_connection.cpp160
1 files changed, 0 insertions, 160 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/fork/process_per_connection.cpp b/3rdparty/asio/src/examples/cpp03/fork/process_per_connection.cpp
deleted file mode 100644
index 483147e9552..00000000000
--- a/3rdparty/asio/src/examples/cpp03/fork/process_per_connection.cpp
+++ /dev/null
@@ -1,160 +0,0 @@
-//
-// process_per_connection.cpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2016 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 <asio/io_context.hpp>
-#include <asio/ip/tcp.hpp>
-#include <asio/signal_set.hpp>
-#include <asio/write.hpp>
-#include <boost/array.hpp>
-#include <boost/bind.hpp>
-#include <cstdlib>
-#include <iostream>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-using asio::ip::tcp;
-
-class server
-{
-public:
- server(asio::io_context& io_context, unsigned short port)
- : io_context_(io_context),
- signal_(io_context, SIGCHLD),
- acceptor_(io_context, tcp::endpoint(tcp::v4(), port)),
- socket_(io_context)
- {
- start_signal_wait();
- start_accept();
- }
-
-private:
- void start_signal_wait()
- {
- signal_.async_wait(boost::bind(&server::handle_signal_wait, this));
- }
-
- void handle_signal_wait()
- {
- // Only the parent process should check for this signal. We can determine
- // whether we are in the parent by checking if the acceptor is still open.
- if (acceptor_.is_open())
- {
- // Reap completed child processes so that we don't end up with zombies.
- int status = 0;
- while (waitpid(-1, &status, WNOHANG) > 0) {}
-
- start_signal_wait();
- }
- }
-
- void start_accept()
- {
- acceptor_.async_accept(socket_,
- boost::bind(&server::handle_accept, this, _1));
- }
-
- void handle_accept(const asio::error_code& ec)
- {
- if (!ec)
- {
- // Inform the io_context that we are about to fork. The io_context cleans
- // up any internal resources, such as threads, that may interfere with
- // forking.
- io_context_.notify_fork(asio::io_context::fork_prepare);
-
- if (fork() == 0)
- {
- // Inform the io_context that the fork is finished and that this is the
- // child process. The io_context uses this opportunity to create any
- // internal file descriptors that must be private to the new process.
- io_context_.notify_fork(asio::io_context::fork_child);
-
- // The child won't be accepting new connections, so we can close the
- // acceptor. It remains open in the parent.
- acceptor_.close();
-
- // The child process is not interested in processing the SIGCHLD signal.
- signal_.cancel();
-
- start_read();
- }
- else
- {
- // Inform the io_context that the fork is finished (or failed) and that
- // this is the parent process. The io_context uses this opportunity to
- // recreate any internal resources that were cleaned up during
- // preparation for the fork.
- io_context_.notify_fork(asio::io_context::fork_parent);
-
- socket_.close();
- start_accept();
- }
- }
- else
- {
- std::cerr << "Accept error: " << ec.message() << std::endl;
- start_accept();
- }
- }
-
- void start_read()
- {
- socket_.async_read_some(asio::buffer(data_),
- boost::bind(&server::handle_read, this, _1, _2));
- }
-
- void handle_read(const asio::error_code& ec, std::size_t length)
- {
- if (!ec)
- start_write(length);
- }
-
- void start_write(std::size_t length)
- {
- asio::async_write(socket_, asio::buffer(data_, length),
- boost::bind(&server::handle_write, this, _1));
- }
-
- void handle_write(const asio::error_code& ec)
- {
- if (!ec)
- start_read();
- }
-
- asio::io_context& io_context_;
- asio::signal_set signal_;
- tcp::acceptor acceptor_;
- tcp::socket socket_;
- boost::array<char, 1024> data_;
-};
-
-int main(int argc, char* argv[])
-{
- try
- {
- if (argc != 2)
- {
- std::cerr << "Usage: process_per_connection <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() << std::endl;
- }
-}