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- // Copyright 2014 Renato Tegon Forti, Antony Polukhin.
- // Copyright 2015-2019 Antony Polukhin.
- //
- // 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"
- //[callplugcpp_tutorial6
- #include <boost/dll/import.hpp>
- #include <boost/function.hpp>
- #include <iostream>
- typedef boost::function<void()> callback_t;
- void print_unloaded() {
- std::cout << "unloaded" << std::endl;
- }
- int main(int argc, char* argv[]) {
- // argv[1] contains full path to our plugin library
- boost::dll::fs::path shared_library_path = /*<-*/ b2_workarounds::first_lib_from_argv(argc, argv); /*->*/ //=argv[1];
- // loading library and getting a function from it
- boost::function<void(const callback_t&)> on_unload
- = boost::dll::import_alias<void(const callback_t&)>(
- shared_library_path, "on_unload"
- );
- on_unload(&print_unloaded); // adding a callback
- std::cout << "Before library unload." << std::endl;
- // Releasing last reference to the library, so that it gets unloaded
- on_unload.clear();
- std::cout << "After library unload." << std::endl;
- }
- //]
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