| 1 | // Copyright 2016 Klemens D. Morgenstern. |
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| 2 | // |
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| 3 | // Distributed under the Boost Software License, Version 1.0. |
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| 4 | // (See accompanying file LICENSE_1_0.txt |
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| 5 | // or copy at http://www.boost.org/LICENSE_1_0.txt) |
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| 6 | |
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| 7 | #include "../b2_workarounds.hpp" // contains dll_test::replace_with_full_path |
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| 8 | |
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| 9 | //[smart_lib_setup |
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| 10 | #include <boost/dll/smart_library.hpp> // for import_alias |
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| 11 | #include <iostream> |
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| 12 | #include <memory> |
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| 13 | |
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| 14 | namespace dll = boost::dll; |
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| 15 | |
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| 16 | struct alias; |
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| 17 | |
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| 18 | int main(int argc, char* argv[]) { |
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| 19 | /*<-*/ b2_workarounds::argv_to_path_guard guard(argc, argv); /*->*/ |
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| 20 | boost::dll::fs::path lib_path(argv[1]); // argv[1] contains path to directory with our plugin library |
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| 21 | dll::smart_lib lib(lib_path); // smart library instance |
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| 22 | //] |
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| 23 | //[smart_lib_size |
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| 24 | auto size_f = lib.get_function<std::size_t()>("space::my_plugin::size" ); //get the size function |
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| 25 | |
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| 26 | auto size = size_f(); // get the size of the class |
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| 27 | std::unique_ptr<char[], size> buffer(new char[size]); //allocate a buffer for the import |
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| 28 | alias & inst = *reinterpret_cast<alias*>(buffer.get()); //cast it to our alias type. |
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| 29 | //] |
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| 30 | //[smart_lib_type_alias |
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| 31 | lib.add_type_alias("space::my_plugin" ); //add an alias, so i can import a class that is not declared here |
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| 32 | //] |
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| 33 | //[smart_lib_ctor |
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| 34 | auto ctor = lib.get_constructor<alias(const std::string&)>(); //get the constructor |
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| 35 | ctor.call_standard(&inst, "MyName" ); //call the non-allocating constructor. The allocating-constructor is a non-portable feature |
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| 36 | //] |
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| 37 | //[smart_lib_name |
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| 38 | auto name_f = lib.get_mem_fn<const alias, std::string()>("name" );//import the name function |
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| 39 | std::cout << "Name Call: " << (inst.*name_f)() << std::endl; |
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| 40 | //] |
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| 41 | //[smart_lib_calculate |
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| 42 | //import both calculate functions |
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| 43 | auto calc_f = lib.get_mem_fn<alias, float(float, float)>("calculate" ); |
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| 44 | auto calc_i = lib.get_mem_fn<alias, int(int, int)> ("calculate" ); |
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| 45 | |
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| 46 | std::cout << "calc(float): " << (inst.*calc_f)(5., 2.) << std::endl; |
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| 47 | std::cout << "calc(int) : " << (inst.*calc_f)(5, 2) << std::endl; |
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| 48 | //] |
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| 49 | //[smart_lib_var |
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| 50 | auto & var = lib.get_variable<int>("space::my_plugin::value" ); |
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| 51 | cout << "value " << var << endl; |
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| 52 | //] |
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| 53 | //[smart_lib_dtor |
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| 54 | auto dtor = lib.get_destructor<alias>(); //get the destructor |
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| 55 | dtor.call_standard(&inst); |
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| 56 | std::cout << "plugin->calculate(1.5, 1.5) call: " << plugin->calculate(1.5, 1.5) << std::endl; |
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| 57 | } |
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| 58 | //] |
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| 59 | |
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