40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
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// Copyright 2015-2019 Antony Polukhin.
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include "../b2_workarounds.hpp"
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//[callplugcpp_tutorial6
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#include <boost/dll/import.hpp>
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#include <boost/function.hpp>
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#include <iostream>
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typedef boost::function<void()> callback_t;
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void print_unloaded() {
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std::cout << "unloaded" << std::endl;
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}
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int main(int argc, char* argv[]) {
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// argv[1] contains full path to our plugin library
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boost::dll::fs::path shared_library_path = /*<-*/ b2_workarounds::first_lib_from_argv(argc, argv); /*->*/ //=argv[1];
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// loading library and getting a function from it
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boost::function<void(const callback_t&)> on_unload
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= boost::dll::import_alias<void(const callback_t&)>(
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shared_library_path, "on_unload"
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);
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on_unload(&print_unloaded); // adding a callback
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std::cout << "Before library unload." << std::endl;
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// Releasing last reference to the library, so that it gets unloaded
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on_unload.clear();
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std::cout << "After library unload." << std::endl;
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}
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//]
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