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Diffstat (limited to 'src/third_party/boost-1.56.0/boost/serialization/singleton.hpp')
-rw-r--r-- | src/third_party/boost-1.56.0/boost/serialization/singleton.hpp | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/src/third_party/boost-1.56.0/boost/serialization/singleton.hpp b/src/third_party/boost-1.56.0/boost/serialization/singleton.hpp deleted file mode 100644 index 546118c8681..00000000000 --- a/src/third_party/boost-1.56.0/boost/serialization/singleton.hpp +++ /dev/null @@ -1,158 +0,0 @@ -#ifndef BOOST_SERIALIZATION_SINGLETON_HPP -#define BOOST_SERIALIZATION_SINGLETON_HPP - -/////////1/////////2///////// 3/////////4/////////5/////////6/////////7/////////8 -// singleton.hpp -// -// Copyright David Abrahams 2006. Original version -// -// Copyright Robert Ramey 2007. Changes made to permit -// application throughout the serialization library. -// -// 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) -// -// The intention here is to define a template which will convert -// any class into a singleton with the following features: -// -// a) initialized before first use. -// b) thread-safe for const access to the class -// c) non-locking -// -// In order to do this, -// a) Initialize dynamically when used. -// b) Require that all singletons be initialized before main -// is called or any entry point into the shared library is invoked. -// This guarentees no race condition for initialization. -// In debug mode, we assert that no non-const functions are called -// after main is invoked. -// - -// MS compatible compilers support #pragma once -#if defined(_MSC_VER) -# pragma once -#endif - -#include <boost/assert.hpp> -#include <boost/config.hpp> -#include <boost/noncopyable.hpp> -#include <boost/serialization/force_include.hpp> - -#ifdef BOOST_MSVC -# pragma warning(push) -# pragma warning(disable : 4511 4512) -#endif - -namespace boost { -namespace serialization { - -////////////////////////////////////////////////////////////////////// -// Provides a dynamically-initialized (singleton) instance of T in a -// way that avoids LNK1179 on vc6. See http://tinyurl.com/ljdp8 or -// http://lists.boost.org/Archives/boost/2006/05/105286.php for -// details. -// - -// singletons created by this code are guarenteed to be unique -// within the executable or shared library which creates them. -// This is sufficient and in fact ideal for the serialization library. -// The singleton is created when the module is loaded and destroyed -// when the module is unloaded. - -// This base class has two functions. - -// First it provides a module handle for each singleton indicating -// the executable or shared library in which it was created. This -// turns out to be necessary and sufficient to implement the tables -// used by serialization library. - -// Second, it provides a mechanism to detect when a non-const function -// is called after initialization. - -// make a singleton to lock/unlock all singletons for alteration. -// The intent is that all singletons created/used by this code -// are to be initialized before main is called. A test program -// can lock all the singletons when main is entereed. This any -// attempt to retieve a mutable instances while locked will -// generate a assertion if compiled for debug. - -class singleton_module : - public boost::noncopyable -{ -private: - static bool & get_lock(){ - static bool lock = false; - return lock; - } -public: -// static const void * get_module_handle(){ -// return static_cast<const void *>(get_module_handle); -// } - static void lock(){ - get_lock() = true; - } - static void unlock(){ - get_lock() = false; - } - static bool is_locked() { - return get_lock(); - } -}; - -namespace detail { - -template<class T> -class singleton_wrapper : public T -{ -public: - static bool m_is_destroyed; - ~singleton_wrapper(){ - m_is_destroyed = true; - } -}; - -template<class T> -bool detail::singleton_wrapper< T >::m_is_destroyed = false; - -} // detail - -template <class T> -class singleton : public singleton_module -{ -private: - BOOST_DLLEXPORT static T & instance; - // include this to provoke instantiation at pre-execution time - static void use(T const &) {} - BOOST_DLLEXPORT static T & get_instance() { - static detail::singleton_wrapper< T > t; - // refer to instance, causing it to be instantiated (and - // initialized at startup on working compilers) - BOOST_ASSERT(! detail::singleton_wrapper< T >::m_is_destroyed); - use(instance); - return static_cast<T &>(t); - } -public: - BOOST_DLLEXPORT static T & get_mutable_instance(){ - BOOST_ASSERT(! is_locked()); - return get_instance(); - } - BOOST_DLLEXPORT static const T & get_const_instance(){ - return get_instance(); - } - BOOST_DLLEXPORT static bool is_destroyed(){ - return detail::singleton_wrapper< T >::m_is_destroyed; - } -}; - -template<class T> -BOOST_DLLEXPORT T & singleton< T >::instance = singleton< T >::get_instance(); - -} // namespace serialization -} // namespace boost - -#ifdef BOOST_MSVC -#pragma warning(pop) -#endif - -#endif // BOOST_SERIALIZATION_SINGLETON_HPP |