Author: John Torjo, www.torjo.com
Copyright (C) 2007 John Torjo (see www.torjo.com for email)
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)
See http://www.boost.org for updates, documentation, and revision history. See http://www.torjo.com/log2/ for more details
This usage:
Here's what the output will be:
The console:
The err.txt file:
00001 00053 #define BOOST_LOG_COMPILE_FAST_OFF 00054 #include <boost/logging/logging.hpp> 00055 #include <boost/logging/format.hpp> 00056 00057 using namespace boost::logging; 00058 00059 typedef logger< default_, destination::cout> app_log_type; 00060 typedef logger< default_, destination::file> err_log_type; 00061 00062 BOOST_DEFINE_LOG_FILTER(g_log_filter, filter::no_ts ) 00063 00064 BOOST_DEFINE_LOG(g_log_app, app_log_type ) 00065 BOOST_DEFINE_LOG_WITH_ARGS( g_log_err, err_log_type, ("err.txt") ) 00066 00067 #define LAPP_ BOOST_LOG_USE_LOG_IF_FILTER(g_log_app(), g_log_filter()->is_enabled() ) 00068 #define LERR_ BOOST_LOG_USE_LOG_IF_FILTER(g_log_err(), g_log_filter()->is_enabled() ) 00069 00070 void fastest_use_ostr_like_example() { 00071 g_log_app()->mark_as_initialized(); 00072 g_log_err()->mark_as_initialized(); 00073 00074 int i = 1; 00075 LAPP_ << "this is so cool " << i++ << "\n"; 00076 LAPP_ << "this is so cool again " << i++ << "\n"; 00077 LERR_ << "first error " << i++ << "\n"; 00078 00079 std::string hello = "hello", world = "world"; 00080 LAPP_ << hello << ", " << world << "\n"; 00081 00082 g_log_filter()->set_enabled(false); 00083 LAPP_ << "this will not be written to the log"; 00084 LAPP_ << "this won't be written to the log"; 00085 LERR_ << "this error is not logged " << i++; 00086 00087 g_log_filter()->set_enabled(true); 00088 LAPP_ << "good to be back ;) " << i++ << "\n"; 00089 LERR_ << "second error " << i++ << "\n"; 00090 } 00091 00092 00093 00094 00095 int main() { 00096 fastest_use_ostr_like_example(); 00097 } 00098 00099 00100 // End of file 00101