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/*
* Copyright Andrey Semashev 2007 - 2015.
* 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)
*/
/*!
* \file global_logger_storage.cpp
* \author Andrey Semashev
* \date 21.04.2008
*
* \brief This header is the Boost.Log library implementation, see the library documentation
* at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
*/
#include <boost/log/detail/config.hpp>
#include <map>
#include <string>
#include <boost/limits.hpp>
#include <boost/type_index.hpp>
#include <boost/log/exceptions.hpp>
#include <boost/log/detail/snprintf.hpp>
#include <boost/log/detail/singleton.hpp>
#include <boost/log/sources/global_logger_storage.hpp>
#if !defined(BOOST_LOG_NO_THREADS)
#include <boost/thread/mutex.hpp>
#include <boost/log/detail/locks.hpp>
#endif
#include <boost/log/detail/header.hpp>
namespace boost {
BOOST_LOG_OPEN_NAMESPACE
namespace sources {
namespace aux {
BOOST_LOG_ANONYMOUS_NAMESPACE {
//! The loggers repository singleton
struct loggers_repository :
public log::aux::lazy_singleton< loggers_repository >
{
//! Repository map type
typedef std::map< typeindex::type_index, shared_ptr< logger_holder_base > > loggers_map_t;
#if !defined(BOOST_LOG_NO_THREADS)
//! Synchronization primitive
mutable mutex m_Mutex;
#endif
//! Map of logger holders
loggers_map_t m_Loggers;
};
} // namespace
//! Finds or creates the logger and returns its holder
BOOST_LOG_API shared_ptr< logger_holder_base > global_storage::get_or_init(typeindex::type_index key, initializer_t initializer)
{
typedef loggers_repository::loggers_map_t loggers_map_t;
loggers_repository& repo = loggers_repository::get();
BOOST_LOG_EXPR_IF_MT(log::aux::exclusive_lock_guard< mutex > lock(repo.m_Mutex);)
loggers_map_t::iterator it = repo.m_Loggers.find(key);
if (it != repo.m_Loggers.end())
{
// There is an instance
return it->second;
}
else
{
// We have to create a logger instance
shared_ptr< logger_holder_base > inst = initializer();
repo.m_Loggers[key] = inst;
return inst;
}
}
//! Throws the \c odr_violation exception
BOOST_LOG_API BOOST_LOG_NORETURN void throw_odr_violation(
typeindex::type_index tag_type,
typeindex::type_index logger_type,
logger_holder_base const& registered)
{
char buf[std::numeric_limits< unsigned int >::digits10 + 3];
if (log::aux::snprintf(buf, sizeof(buf), "%u", registered.m_RegistrationLine) < 0)
buf[0] = '\0';
std::string str =
std::string("Could not initialize global logger with tag \"") +
tag_type.pretty_name() +
"\" and type \"" +
logger_type.pretty_name() +
"\". A logger of type \"" +
registered.m_LoggerType.pretty_name() +
"\" with the same tag has already been registered at " +
registered.m_RegistrationFile + ":" + buf + ".";
BOOST_LOG_THROW_DESCR(odr_violation, str);
}
} // namespace aux
} // namespace sources
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#include <boost/log/detail/footer.hpp>
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