1 /* 2 * Copyright Andrey Semashev 2007 - 2015. 3 * Distributed under the Boost Software License, Version 1.0. 4 * (See accompanying file LICENSE_1_0.txt or copy at 5 * http://www.boost.org/LICENSE_1_0.txt) 6 */ 7 /*! 8 * \file current_process_id.hpp 9 * \author Andrey Semashev 10 * \date 12.09.2009 11 * 12 * The header contains implementation of a current process id attribute 13 */ 14 15 #ifndef BOOST_LOG_ATTRIBUTES_CURRENT_PROCESS_ID_HPP_INCLUDED_ 16 #define BOOST_LOG_ATTRIBUTES_CURRENT_PROCESS_ID_HPP_INCLUDED_ 17 18 #include <boost/log/detail/config.hpp> 19 #include <boost/log/detail/process_id.hpp> 20 #include <boost/log/attributes/constant.hpp> 21 #include <boost/log/attributes/attribute_cast.hpp> 22 #include <boost/log/detail/header.hpp> 23 24 #ifdef BOOST_HAS_PRAGMA_ONCE 25 #pragma once 26 #endif 27 28 namespace boost { 29 30 BOOST_LOG_OPEN_NAMESPACE 31 32 //! Process identifier type used by the library 33 typedef boost::log::aux::process::id process_id; 34 35 namespace attributes { 36 37 /*! 38 * \brief A class of an attribute that holds the current process identifier 39 */ 40 class current_process_id : 41 public constant< process_id > 42 { 43 typedef constant< process_id > base_type; 44 45 public: 46 /*! 47 * Constructor. Initializes the attribute with the current process identifier. 48 */ current_process_id()49 current_process_id() : base_type(boost::log::aux::this_process::get_id()) {} 50 /*! 51 * Constructor for casting support 52 */ current_process_id(cast_source const & source)53 explicit current_process_id(cast_source const& source) : 54 base_type(source) 55 { 56 } 57 }; 58 59 } // namespace attributes 60 61 BOOST_LOG_CLOSE_NAMESPACE // namespace log 62 63 } // namespace boost 64 65 #include <boost/log/detail/footer.hpp> 66 67 #endif // BOOST_LOG_ATTRIBUTES_CURRENT_PROCESS_ID_HPP_INCLUDED_ 68