timeoffsets.h

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// Copyright (c) 2024-present The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_NODE_TIMEOFFSETS_H
#define BITCOIN_NODE_TIMEOFFSETS_H

#include <sync.h>

#include <chrono>
#include <cstddef>
#include <deque>

namespace node {
class Warnings;
} // namespace node

class TimeOffsets
{
public:
    TimeOffsets(node::Warnings& warnings) : m_warnings{warnings} {}

private:
    static constexpr size_t MAX_SIZE{50};
    static constexpr std::chrono::minutes WARN_THRESHOLD{10};

    mutable Mutex m_mutex;
    std::deque<std::chrono::seconds> m_offsets GUARDED_BY(m_mutex){};

    node::Warnings& m_warnings;

public:
    void Add(std::chrono::seconds offset) EXCLUSIVE_LOCKS_REQUIRED(!m_mutex);

    std::chrono::seconds Median() const EXCLUSIVE_LOCKS_REQUIRED(!m_mutex);

    bool WarnIfOutOfSync() const EXCLUSIVE_LOCKS_REQUIRED(!m_mutex);
};

#endif // BITCOIN_NODE_TIMEOFFSETS_H