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49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
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// Copyright Antony Polukhin, 2015-2026.
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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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// MinGW related workaround
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#define BOOST_DLL_FORCE_ALIAS_INSTANTIATION
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//[plugcpp_on_unload
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#include <boost/dll/alias.hpp> // for BOOST_DLL_ALIAS
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#include <functional>
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#include <vector>
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namespace my_namespace {
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struct on_unload {
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using callback_t = std::function<void()> ;
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using this_type = on_unload;
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~on_unload() {
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for (std::size_t i = 0; i < callbacks_.size(); ++i) {
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callback_t& function = callbacks_[i];
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function(); // calling the callback
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}
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}
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// not thread safe
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static void add(const callback_t& function) {
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static this_type instance;
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instance.callbacks_.push_back(function);
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}
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private:
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std::vector<callback_t> callbacks_;
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on_unload() {} // prohibit construction outside of the `add` function
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};
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// Exporting the static "add" function with name "on_unload"
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BOOST_DLL_ALIAS(my_namespace::on_unload::add, on_unload)
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} // namespace my_namespace
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//]
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