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// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
// Copyright Antony Polukhin, 2015-2025.
//
// 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 <functional>
#include <iostream>
using callback_t = std::function<void()> ;
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
std::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 = {};
std::cout << "After library unload." << std::endl;
}
//]
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