51 lines
1.9 KiB
C++
51 lines
1.9 KiB
C++
// Copyright (c) 2016-2024 The Hush developers
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// Copyright (c) 2015 The Bitcoin Core developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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/******************************************************************************
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* Copyright © 2014-2019 The SuperNET Developers. *
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* *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
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* the top-level directory of this distribution for the individual copyright *
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* holder information and the developer policies on copyright and licensing. *
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* *
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* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* SuperNET software, including this file may be copied, modified, propagated *
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* or distributed except according to the terms contained in the LICENSE file *
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* *
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* Removal or modification of this copyright notice is prohibited. *
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* *
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******************************************************************************/
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#ifndef HUSH_REVERSELOCK_H
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#define HUSH_REVERSELOCK_H
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/**
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* An RAII-style reverse lock. Unlocks on construction and locks on destruction.
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*/
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template<typename Lock>
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class reverse_lock
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{
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public:
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explicit reverse_lock(Lock& lock) : lock(lock) {
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lock.unlock();
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lock.swap(templock);
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}
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~reverse_lock() {
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templock.lock();
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templock.swap(lock);
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}
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private:
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reverse_lock(reverse_lock const&);
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reverse_lock& operator=(reverse_lock const&);
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Lock& lock;
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Lock templock;
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};
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#endif // HUSH_REVERSELOCK_H
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