| 1 | /* |
|---|---|
| 2 | * Copyright Andrey Semashev 2007 - 2015. |
| 3 | * Distributed under the Boost Software License, Version 1.0. |
| 4 | * (See accompanying file LICENSE_1_0.txt or copy at |
| 5 | * http://www.boost.org/LICENSE_1_0.txt) |
| 6 | */ |
| 7 | /*! |
| 8 | * \file severity_level.cpp |
| 9 | * \author Andrey Semashev |
| 10 | * \date 10.05.2008 |
| 11 | * |
| 12 | * \brief This header is the Boost.Log library implementation, see the library documentation |
| 13 | * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. |
| 14 | */ |
| 15 | |
| 16 | #include <boost/log/detail/config.hpp> |
| 17 | #include <boost/cstdint.hpp> |
| 18 | #include <boost/log/sources/severity_feature.hpp> |
| 19 | |
| 20 | #if !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_LOG_USE_COMPILER_TLS) |
| 21 | #include <boost/thread/thread.hpp> // at_thread_exit |
| 22 | #include <boost/log/detail/singleton.hpp> |
| 23 | #include <boost/log/detail/thread_specific.hpp> |
| 24 | #endif |
| 25 | #include "unique_ptr.hpp" |
| 26 | #include <boost/log/detail/header.hpp> |
| 27 | |
| 28 | namespace boost { |
| 29 | |
| 30 | BOOST_LOG_OPEN_NAMESPACE |
| 31 | |
| 32 | namespace sources { |
| 33 | |
| 34 | namespace aux { |
| 35 | |
| 36 | #if defined(BOOST_LOG_NO_THREADS) |
| 37 | |
| 38 | static uintmax_t g_Severity = 0; |
| 39 | |
| 40 | #elif defined(BOOST_LOG_USE_COMPILER_TLS) |
| 41 | |
| 42 | static BOOST_LOG_TLS uintmax_t g_Severity = 0; |
| 43 | |
| 44 | #else |
| 45 | |
| 46 | //! Severity level storage class |
| 47 | class severity_level_holder : |
| 48 | public boost::log::aux::lazy_singleton< severity_level_holder, boost::log::aux::thread_specific< uintmax_t* > > |
| 49 | { |
| 50 | }; |
| 51 | |
| 52 | #endif |
| 53 | |
| 54 | |
| 55 | #if !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_LOG_USE_COMPILER_TLS) |
| 56 | |
| 57 | //! The method returns the severity level for the current thread |
| 58 | BOOST_LOG_API uintmax_t& get_severity_level() |
| 59 | { |
| 60 | boost::log::aux::thread_specific< uintmax_t* >& tss = severity_level_holder::get(); |
| 61 | uintmax_t* p = tss.get(); |
| 62 | if (BOOST_UNLIKELY(!p)) |
| 63 | { |
| 64 | log::aux::unique_ptr< uintmax_t > ptr(new uintmax_t(0)); |
| 65 | tss.set(ptr.get()); |
| 66 | p = ptr.release(); |
| 67 | boost::this_thread::at_thread_exit(f: [p]() { delete p; }); |
| 68 | } |
| 69 | return *p; |
| 70 | } |
| 71 | |
| 72 | #else // !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_LOG_USE_COMPILER_TLS) |
| 73 | |
| 74 | //! The method returns the severity level for the current thread |
| 75 | BOOST_LOG_API uintmax_t& get_severity_level() |
| 76 | { |
| 77 | return g_Severity; |
| 78 | } |
| 79 | |
| 80 | #endif // !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_LOG_USE_COMPILER_TLS) |
| 81 | |
| 82 | } // namespace aux |
| 83 | |
| 84 | } // namespace sources |
| 85 | |
| 86 | BOOST_LOG_CLOSE_NAMESPACE // namespace log |
| 87 | |
| 88 | } // namespace boost |
| 89 | |
| 90 | #include <boost/log/detail/footer.hpp> |
| 91 |