guard.h

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// Copyright (c) 2013-2025  Made to Order Software Corp.  All Rights Reserved
//
// https://snapwebsites.org/project/cppthread
// contact@m2osw.com
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#pragma once
 
namespace cppthread
{
 
 
class mutex;
 
 
class guard
{
public:
                        guard(mutex & m);
                        guard(guard const & rhs) = delete;
                        ~guard();
 
    guard &             operator = (guard const & rhs) = delete;
 
    void                unlock(bool done = true);
    void                lock();
    bool                is_locked() const;
 
private:
    bool                f_locked = false;
    mutex *             f_mutex = nullptr;
};
 
 
 
} // namespace cppthread
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