67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
/* Copyright (c) 2020, 2024, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is designed to work with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have either included with
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the program or referenced in the documentation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef CONTAINER_SENTRY_INCLUDED
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#define CONTAINER_SENTRY_INCLUDED
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#include <functional>
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namespace raii {
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/**
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Generic sentry class that invokes some callable object of type F upon disposal
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of an instance of this class.
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Check C++ documentation for the definition of `Callable` named requirement for
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more information.
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*/
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template <typename F = std::function<void()>>
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class Sentry {
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public:
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/**
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Constructor for the class that stores the callable object passed as
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argument, to be invoked upon disposal of the object.
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@param dispose The callable object to be invoked upon disposal of the
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object.
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*/
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Sentry(F dispose);
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/**
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Destructor for the class. It will call the stored callable.
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*/
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virtual ~Sentry();
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private:
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/** The callable to be invoked upon disposal of the object. */
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F m_dispose;
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};
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} // namespace raii
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template <typename F>
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raii::Sentry<F>::Sentry(F dispose) : m_dispose{dispose} {}
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template <typename F>
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raii::Sentry<F>::~Sentry() {
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this->m_dispose();
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}
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#endif // CONTAINER_SENTRY_INCLUDED
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