fees.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 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_POLICY_FEES_H
#define BITCOIN_POLICY_FEES_H
 
#include <consensus/amount.h>
#include <random.h>
#include <sync.h>
#include <uint256.h>
 
#include <map>
#include <string>
#include <vector>
 
class CFeeRate;
 
// Minimum and Maximum values for tracking feerates
static constexpr Amount MIN_FEERATE(10 * SATOSHI);
static const Amount MAX_FEERATE(int64_t(1e7) * SATOSHI);
 
// We have to lump transactions into buckets based on feerate, but we want to be
// able to give accurate estimates over a large range of potential feerates.
// Therefore it makes sense to exponentially space the buckets
static const double FEE_SPACING = 1.1;
 
class FeeFilterRounder {
public:
    explicit FeeFilterRounder(const CFeeRate &min_incremental_fee,
                              FastRandomContext &rng);
 
    Amount round(const Amount currentMinFee)
        EXCLUSIVE_LOCKS_REQUIRED(!m_insecure_rand_mutex);
 
private:
    const std::set<Amount> m_fee_set;
    Mutex m_insecure_rand_mutex;
    FastRandomContext &insecure_rand GUARDED_BY(m_insecure_rand_mutex);
};
 
#endif // BITCOIN_POLICY_FEES_H