[Boost-users] init log with BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT

Subject: [Boost-users] init log with BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT
From: Bill Tian (billtian945_at_[hidden])
Date: 2015-01-14 06:02:49

Hi guys,
I want to define a global logger that can be used in other place.
The severity level always be "info".
I init the log like this:

#include <cstdlib>
#include <boost/log/trivial.hpp>
#include <boost/log/core.hpp>
#include <boost/log/sources/global_logger_storage.hpp>
#include <boost/log/sources/severity_logger.hpp>
#include <boost/log/sources/record_ostream.hpp>
#include <boost/log/sources/severity_feature.hpp>

// Here we define our application severity levels.
enum severity_level
{
    normal,
    notification,
    warning,
    error,
    critical
};

// The formatting logic for the severity level
template< typename CharT, typename TraitsT >
inline std::basic_ostream< CharT, TraitsT >& operator<<
(std::basic_ostream< CharT, TraitsT >& strm, severity_level lvl)
{
    static const char* const str[] =
    {
        "normal",
        "notification",
        "warning",
        "error",
        "critical"
    };
    if (static_cast<std::size_t>(lvl) < (sizeof(str) / sizeof(*str)))
        strm << str[lvl];
    else
        strm << static_cast<int>(lvl);
    return strm;
}

//  Global logger declaration
BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT(test_lg,
    boost::log::sources::severity_logger_mt<severity_level>)

void try_logging()
{
    boost::log::sources::severity_logger_mt<severity_level>& lg =
test_lg::get();

    // TODO:
    // always write "info" record, Unknown reason!
    BOOST_LOG_SEV(lg, normal) << "This is a normal severity record";
    BOOST_LOG_SEV(lg, notification) << "This is a notification severity
record";
    BOOST_LOG_SEV(lg, warning) << "This is a warning severity record";
    BOOST_LOG_SEV(lg, error) << "This is a error severity record";
    BOOST_LOG_SEV(lg, critical) << "This is a critical severity record";
}

int main(int argc, char* argv[])
{
    try_logging();

    return EXIT_SUCCESS;
}

In the log i got this:
[2015-01-14 19:00:34.800935] [0x40000300] [info]    This is a normal
severity re
cord
[2015-01-14 19:00:34.805935] [0x40000300] [info]    This is a notification
sever
ity record
[2015-01-14 19:00:34.806935] [0x40000300] [info]    This is a warning
severity r
ecord
[2015-01-14 19:00:34.806935] [0x40000300] [info]    This is a error
severity rec
ord
[2015-01-14 19:00:34.806935] [0x40000300] [info]    This is a critical
severity
record

What do i miss?
Thank you!

Bill