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Optimized refcount variable importing methods

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This commit is contained in:
Antony Polukhin
2015-07-30 10:20:28 +03:00
parent e627d9a007
commit d6afc013bf
1 changed files with 4 additions and 18 deletions
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22
include/boost/dll/import_variable.hpp
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@@ -1,4 +1,5 @@
// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
// Copyright 2015 Antony Polukhin.
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
@@ -21,27 +22,12 @@
/// functions that hold a shared pointer to the instance of
/// boost::dll::shared_library.
namespace boost { namespace dll {
namespace detail {
struct ptr_holding_empty_deleter {
boost::shared_ptr<shared_library> lib_;
explicit ptr_holding_empty_deleter(const boost::shared_ptr<shared_library>& lib)
: lib_(lib)
{}
inline void operator()(const void*) const BOOST_NOEXCEPT { /*do nothing*/ }
};
} // namespace detail
namespace explicit_api {
namespace boost { namespace dll { namespace explicit_api {
//! \overload boost::dll::import_variable(const boost::shared_ptr<shared_library>& lib, boost::string_ref variable_name, load_mode::type mode)
template <class T>
boost::shared_ptr<T> import_variable(const boost::shared_ptr<boost::dll::shared_library>& lib, boost::string_ref variable_name) {
return boost::shared_ptr<T>(&lib->get<T>(variable_name), boost::dll::detail::ptr_holding_empty_deleter(lib));
return boost::shared_ptr<T>(lib, &lib->get<T>(variable_name));
}
/*!
@@ -97,7 +83,7 @@ boost::shared_ptr<T> import_variable(const boost::filesystem::path& lib, boost::
//! \overload boost::dll::import_variable_alias(const boost::shared_ptr<shared_library>& lib, boost::string_ref variable_name, load_mode::type mode)
template <class T>
boost::shared_ptr<T> import_variable_alias(const boost::shared_ptr<boost::dll::shared_library>& lib, boost::string_ref variable_name) {
return boost::shared_ptr<T>(lib->get<T*>(variable_name), boost::dll::detail::ptr_holding_empty_deleter(lib));
return boost::shared_ptr<T>(lib, lib->get<T*>(variable_name));
}
/*!