116 lines
3.4 KiB
C++
116 lines
3.4 KiB
C++
/*
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* Copyright Andrey Semashev 2007 - 2015.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file main.cpp
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* \author Andrey Semashev
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* \date 10.06.2008
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*
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* \brief An example of logging in multiple threads.
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* See the library tutorial for expanded comments on this code.
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* It may also be worthwhile reading the Wiki requirements page:
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* http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?Boost.Logging
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*/
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// #define BOOST_LOG_DYN_LINK 1
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#include <stdexcept>
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#include <string>
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#include <iostream>
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#include <fstream>
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#include <boost/ref.hpp>
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#include <boost/bind.hpp>
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#include <boost/smart_ptr/shared_ptr.hpp>
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#include <boost/date_time/posix_time/posix_time.hpp>
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#include <boost/thread/thread.hpp>
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#include <boost/thread/barrier.hpp>
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#include <boost/log/common.hpp>
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#include <boost/log/expressions.hpp>
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#include <boost/log/attributes.hpp>
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#include <boost/log/sinks.hpp>
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#include <boost/log/sources/logger.hpp>
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namespace logging = boost::log;
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namespace attrs = boost::log::attributes;
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namespace src = boost::log::sources;
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namespace sinks = boost::log::sinks;
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namespace expr = boost::log::expressions;
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namespace keywords = boost::log::keywords;
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using boost::shared_ptr;
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enum
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{
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LOG_RECORDS_TO_WRITE = 10000,
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THREAD_COUNT = 2
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};
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BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT(test_lg, src::logger_mt)
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//! This function is executed in multiple threads
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void thread_fun(boost::barrier& bar)
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{
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// Wait until all threads are created
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bar.wait();
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// Now, do some logging
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for (unsigned int i = 0; i < LOG_RECORDS_TO_WRITE; ++i)
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{
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BOOST_LOG(test_lg::get()) << "Log record " << i;
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}
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}
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int main(int argc, char* argv[])
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{
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try
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{
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// Open a rotating text file
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shared_ptr< std::ostream > strm(new std::ofstream("test.log"));
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if (!strm->good())
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throw std::runtime_error("Failed to open a text log file");
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// Create a text file sink
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shared_ptr< sinks::synchronous_sink< sinks::text_ostream_backend > > sink(
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new sinks::synchronous_sink< sinks::text_ostream_backend >);
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sink->locked_backend()->add_stream(strm);
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sink->set_formatter
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(
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expr::format("%1%: [%2%] [%3%] - %4%")
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% expr::attr< unsigned int >("RecordID")
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% expr::attr< boost::posix_time::ptime >("TimeStamp")
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% expr::attr< attrs::current_thread_id::value_type >("ThreadID")
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% expr::smessage
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);
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// Add it to the core
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logging::core::get()->add_sink(sink);
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// Add some attributes too
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logging::core::get()->add_global_attribute("TimeStamp", attrs::local_clock());
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logging::core::get()->add_global_attribute("RecordID", attrs::counter< unsigned int >());
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logging::core::get()->add_global_attribute("ThreadID", attrs::current_thread_id());
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// Create logging threads
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boost::barrier bar(THREAD_COUNT);
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boost::thread_group threads;
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for (unsigned int i = 0; i < THREAD_COUNT; ++i)
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threads.create_thread(boost::bind(&thread_fun, boost::ref(bar)));
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// Wait until all action ends
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threads.join_all();
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return 0;
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}
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catch (std::exception& e)
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{
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std::cout << "FAILURE: " << e.what() << std::endl;
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return 1;
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}
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}
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