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Diffstat (limited to '3rdparty/asio/src/examples/cpp03/services/logger_service.hpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp03/services/logger_service.hpp | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/services/logger_service.hpp b/3rdparty/asio/src/examples/cpp03/services/logger_service.hpp deleted file mode 100644 index 9ec99d93419..00000000000 --- a/3rdparty/asio/src/examples/cpp03/services/logger_service.hpp +++ /dev/null @@ -1,145 +0,0 @@ -// -// logger_service.hpp -// ~~~~~~~~~~~~~~~~~~ -// -// 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) -// - -#ifndef SERVICES_LOGGER_SERVICE_HPP -#define SERVICES_LOGGER_SERVICE_HPP - -#include <asio.hpp> -#include <boost/bind/bind.hpp> -#include <boost/date_time/posix_time/posix_time.hpp> -#include <boost/noncopyable.hpp> -#include <boost/scoped_ptr.hpp> -#include <fstream> -#include <sstream> -#include <string> - -namespace services { - -/// Service implementation for the logger. -class logger_service - : public asio::execution_context::service -{ -public: - /// The type used to identify this service in the execution context. - typedef logger_service key_type; - - /// The backend implementation of a logger. - struct logger_impl - { - explicit logger_impl(const std::string& ident) : identifier(ident) {} - std::string identifier; - }; - - /// The type for an implementation of the logger. - typedef logger_impl* impl_type; - - /// Constructor creates a thread to run a private io_context. - logger_service(asio::execution_context& context) - : asio::execution_context::service(context), - work_io_context_(), - work_(asio::require(work_io_context_.get_executor(), - asio::execution::outstanding_work.tracked)), - work_thread_(new asio::thread( - boost::bind(&asio::io_context::run, &work_io_context_))) - { - } - - /// Destructor shuts down the private io_context. - ~logger_service() - { - /// Indicate that we have finished with the private io_context. Its - /// io_context::run() function will exit once all other work has completed. - work_ = asio::any_io_executor(); - if (work_thread_) - work_thread_->join(); - } - - /// Destroy all user-defined handler objects owned by the service. - void shutdown() - { - } - - /// Return a null logger implementation. - impl_type null() const - { - return 0; - } - - /// Create a new logger implementation. - void create(impl_type& impl, const std::string& identifier) - { - impl = new logger_impl(identifier); - } - - /// Destroy a logger implementation. - void destroy(impl_type& impl) - { - delete impl; - impl = null(); - } - - /// Set the output file for the logger. The current implementation sets the - /// output file for all logger instances, and so the impl parameter is not - /// actually needed. It is retained here to illustrate how service functions - /// are typically defined. - void use_file(impl_type& /*impl*/, const std::string& file) - { - // Pass the work of opening the file to the background thread. - asio::post(work_io_context_, boost::bind( - &logger_service::use_file_impl, this, file)); - } - - /// Log a message. - void log(impl_type& impl, const std::string& message) - { - // Format the text to be logged. - std::ostringstream os; - os << impl->identifier << ": " << message; - - // Pass the work of writing to the file to the background thread. - asio::post(work_io_context_, boost::bind( - &logger_service::log_impl, this, os.str())); - } - -private: - /// Helper function used to open the output file from within the private - /// io_context's thread. - void use_file_impl(const std::string& file) - { - ofstream_.close(); - ofstream_.clear(); - ofstream_.open(file.c_str()); - } - - /// Helper function used to log a message from within the private io_context's - /// thread. - void log_impl(const std::string& text) - { - ofstream_ << text << std::endl; - } - - /// Private io_context used for performing logging operations. - asio::io_context work_io_context_; - - /// A work-tracking executor giving work for the private io_context to - /// perform. If we do not give the io_context some work to do then the - /// io_context::run() function will exit immediately. - asio::any_io_executor work_; - - /// Thread used for running the work io_context's run loop. - boost::scoped_ptr<asio::thread> work_thread_; - - /// The file to which log messages will be written. - std::ofstream ofstream_; -}; - -} // namespace services - -#endif // SERVICES_LOGGER_SERVICE_HPP |