| 1 | // Copyright 2014 Renato Tegon Forti, Antony Polukhin. |
|---|---|
| 2 | // Copyright Antony Polukhin, 2015-2024. |
| 3 | // |
| 4 | // Distributed under the Boost Software License, Version 1.0. |
| 5 | // (See accompanying file LICENSE_1_0.txt |
| 6 | // or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 7 | |
| 8 | #include "../b2_workarounds.hpp" |
| 9 | |
| 10 | //[callplugcpp_tutorial6 |
| 11 | #include <boost/dll/import.hpp> |
| 12 | #include <boost/function.hpp> |
| 13 | #include <iostream> |
| 14 | |
| 15 | typedef boost::function<void()> callback_t; |
| 16 | |
| 17 | void print_unloaded() { |
| 18 | std::cout << "unloaded"<< std::endl; |
| 19 | } |
| 20 | |
| 21 | int main(int argc, char* argv[]) { |
| 22 | // argv[1] contains full path to our plugin library |
| 23 | boost::dll::fs::path shared_library_path = /*<-*/ b2_workarounds::first_lib_from_argv(argc, argv); /*->*/ //=argv[1]; |
| 24 | |
| 25 | // loading library and getting a function from it |
| 26 | boost::function<void(const callback_t&)> on_unload |
| 27 | = boost::dll::import_alias<void(const callback_t&)>( |
| 28 | lib: shared_library_path, name: "on_unload" |
| 29 | ); |
| 30 | |
| 31 | on_unload(&print_unloaded); // adding a callback |
| 32 | std::cout << "Before library unload."<< std::endl; |
| 33 | |
| 34 | // Releasing last reference to the library, so that it gets unloaded |
| 35 | on_unload.clear(); |
| 36 | std::cout << "After library unload."<< std::endl; |
| 37 | } |
| 38 | //] |
| 39 | |
| 40 |