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- // Copyright 2016 Klemens D. Morgenstern.
- //
- // 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)
- #include "../b2_workarounds.hpp" // contains dll_test::replace_with_full_path
- //[smart_lib_setup
- #include <boost/dll/smart_library.hpp> // for import_alias
- #include <iostream>
- #include <memory>
- namespace dll = boost::dll;
- struct alias;
- int main(int argc, char* argv[]) {
- /*<-*/ b2_workarounds::argv_to_path_guard guard(argc, argv); /*->*/
- boost::dll::fs::path lib_path(argv[1]); // argv[1] contains path to directory with our plugin library
- dll::smart_lib lib(lib_path); // smart library instance
- //]
- //[smart_lib_size
- auto size_f = lib.get_function<std::size_t()>("space::my_plugin::size"); //get the size function
-
- auto size = size_f(); // get the size of the class
- std::unique_ptr<char[], size> buffer(new char[size]); //allocate a buffer for the import
- alias & inst = *reinterpret_cast<alias*>(buffer.get()); //cast it to our alias type.
- //]
- //[smart_lib_type_alias
- lib.add_type_alias("space::my_plugin"); //add an alias, so i can import a class that is not declared here
- //]
- //[smart_lib_ctor
- auto ctor = lib.get_constructor<alias(const std::string&)>(); //get the constructor
- ctor.call_standard(&inst, "MyName"); //call the non-allocating constructor. The allocating-constructor is a non-portable feature
- //]
- //[smart_lib_name
- auto name_f = lib.get_mem_fn<const alias, std::string()>("name");//import the name function
- std::cout << "Name Call: " << (inst.*name_f)() << std::endl;
- //]
- //[smart_lib_calculate
- //import both calculate functions
- auto calc_f = lib.get_mem_fn<alias, float(float, float)>("calculate");
- auto calc_i = lib.get_mem_fn<alias, int(int, int)> ("calculate");
-
- std::cout << "calc(float): " << (inst.*calc_f)(5., 2.) << std::endl;
- std::cout << "calc(int) : " << (inst.*calc_f)(5, 2) << std::endl;
- //]
- //[smart_lib_var
- auto & var = lib.get_variable<int>("space::my_plugin::value");
- cout << "value " << var << endl;
- //]
- //[smart_lib_dtor
- auto dtor = lib.get_destructor<alias>(); //get the destructor
- dtor.call_standard(&inst);
- std::cout << "plugin->calculate(1.5, 1.5) call: " << plugin->calculate(1.5, 1.5) << std::endl;
- }
- //]
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