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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012-2022 OpenVPN Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License Version 3
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program in the COPYING file.
// If not, see <http://www.gnu.org/licenses/>.
// General purpose class for scope accounting.
#pragma once
namespace openvpn {
class UseCount
{
public:
/**
* Temporarily increments the variable by one for the scope an instance
* of this class is defined.
* @param count
*/
explicit UseCount(int &count)
: count_(count)
{
++count_;
}
/* make this class not copyable. */
UseCount(const UseCount &) = delete;
UseCount &operator=(UseCount &) = delete;
~UseCount()
{
--count_;
}
private:
int &count_;
};
} // namespace openvpn
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