7f19d64164
git-subtree-dir: third_party/immer git-subtree-split: ad3e3556d38bb75966dd24c61a774970a7c7957e
37 lines
807 B
C++
37 lines
807 B
C++
//
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// immer: immutable data structures for C++
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// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
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//
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// This software is distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
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//
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#pragma once
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#include <immer/refcount/no_refcount_policy.hpp>
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namespace immer {
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template <typename Deriv, typename RefcountPolicy>
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class enable_intrusive_ptr
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{
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mutable RefcountPolicy refcount_data_;
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public:
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enable_intrusive_ptr()
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: refcount_data_{disowned{}}
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{}
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friend void intrusive_ptr_add_ref(const Deriv* x)
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{
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x->refcount_data_.inc();
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}
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friend void intrusive_ptr_release(const Deriv* x)
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{
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if (x->refcount_data_.dec())
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delete x;
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}
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};
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} // namespace immer
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