Optimizations:
In this example, all output will be written to the console, debug window, and "out.txt" file. It will look similar to:
00001 ... 00002 30:33 [10] message 1 00003 30:33 [11] message 2 00004 30:33 [12] message 2 00005 30:33 [13] message 2 00006 30:33 [14] message 2 00007 30:33 [15] message 3 00008 30:33 [16] message 2 00009 30:33 [17] message 3 00010 30:33 [18] message 3 00011 30:33 [19] message 4 00012 30:33 [20] message 3 00013 30:33 [21] message 3 00014 30:33 [22] message 4 00015 30:33 [23] message 4 00016 30:33 [24] message 4 00017 30:33 [25] message 4 00018 30:33 [26] message 5 00019 30:33 [27] message 5 00020 30:33 [28] message 6 00021 30:33 [29] message 6 00022 30:33 [30] message 5 00023 30:33 [31] message 5 00024 30:33 [32] message 5 00025 30:33 [33] message 6 00026 30:33 [34] message 7 00027 ...
00001 00057 #include <boost/logging/format_fwd.hpp> 00058 BOOST_LOG_FORMAT_MSG( optimize::cache_string_one_str<> ) 00059 00060 #include <boost/logging/format_ts.hpp> 00061 #include <boost/logging/format/formatter/thread_id.hpp> 00062 #include <boost/thread/thread.hpp> 00063 #include <boost/thread/xtime.hpp> 00064 00065 using namespace boost::logging; 00066 00067 typedef logger_format_write< default_, default_, writer::threading::on_dedicated_thread > logger_type; 00068 00069 BOOST_DECLARE_LOG_FILTER(g_log_filter, filter::no_ts ) 00070 BOOST_DECLARE_LOG(g_l, logger_type) 00071 00072 #define L_ BOOST_LOG_USE_LOG_IF_FILTER(g_l(), g_log_filter()->is_enabled() ) 00073 00074 BOOST_DEFINE_LOG_FILTER(g_log_filter, filter::no_ts ) 00075 BOOST_DEFINE_LOG(g_l, logger_type) 00076 00077 void do_sleep(int ms) { 00078 using namespace boost; 00079 xtime next; 00080 xtime_get( &next, TIME_UTC); 00081 next.nsec += (ms % 1000) * 1000000; 00082 00083 int nano_per_sec = 1000000000; 00084 next.sec += next.nsec / nano_per_sec; 00085 next.sec += ms / 1000; 00086 next.nsec %= nano_per_sec; 00087 thread::sleep( next); 00088 } 00089 00090 void use_log_thread() { 00091 for ( int i = 0; i < 20; ++i) { 00092 L_ << "message " << i ; 00093 do_sleep(1); 00094 } 00095 } 00096 00097 void ts_logger_one_filter_example() { 00098 g_l()->writer().add_formatter( formatter::idx(), "[%] " ); 00099 g_l()->writer().add_formatter( formatter::time("$mm:$ss ") ); 00100 g_l()->writer().add_formatter( formatter::append_newline() ); 00101 g_l()->writer().add_destination( destination::file("out.txt") ); 00102 g_l()->writer().add_destination( destination::dbg_window() ); 00103 g_l()->mark_as_initialized(); 00104 00105 for ( int i = 0 ; i < 5; ++i) 00106 boost::thread t( &use_log_thread); 00107 00108 // allow for all threads to finish 00109 std::cout << "sleep 5s " << std::endl; 00110 do_sleep( 5000); 00111 } 00112 00113 00114 00115 00116 int main() { 00117 ts_logger_one_filter_example(); 00118 } 00119 00120 00121 // End of file 00122