cd262bf641
* DIP0001 implementation * add option in ComputeBlockVersion to assume that masternode is upgraded (and skip rank calculation) * fix mainnet DIP0001 nTimeout * schedule DIP0001 testnet activation start for Sep 18th, 2017 (bump timeout too)
71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
// Copyright (c) 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_CONSENSUS_VERSIONBITS
|
|
#define BITCOIN_CONSENSUS_VERSIONBITS
|
|
|
|
#include "chain.h"
|
|
#include <map>
|
|
|
|
/** What block version to use for new blocks (pre versionbits) */
|
|
static const int32_t VERSIONBITS_LAST_OLD_BLOCK_VERSION = 4;
|
|
/** What bits to set in version for versionbits blocks */
|
|
static const int32_t VERSIONBITS_TOP_BITS = 0x20000000UL;
|
|
/** What bitmask determines whether versionbits is in use */
|
|
static const int32_t VERSIONBITS_TOP_MASK = 0xE0000000UL;
|
|
/** Total bits available for versionbits */
|
|
static const int32_t VERSIONBITS_NUM_BITS = 29;
|
|
|
|
enum ThresholdState {
|
|
THRESHOLD_DEFINED,
|
|
THRESHOLD_STARTED,
|
|
THRESHOLD_LOCKED_IN,
|
|
THRESHOLD_ACTIVE,
|
|
THRESHOLD_FAILED,
|
|
};
|
|
|
|
// A map that gives the state for blocks whose height is a multiple of Period().
|
|
// The map is indexed by the block's parent, however, so all keys in the map
|
|
// will either be NULL or a block with (height + 1) % Period() == 0.
|
|
typedef std::map<const CBlockIndex*, ThresholdState> ThresholdConditionCache;
|
|
|
|
struct BIP9DeploymentInfo {
|
|
/** Deployment name */
|
|
const char *name;
|
|
/** Whether GBT clients can safely ignore this rule in simplified usage */
|
|
bool gbt_force;
|
|
/** Whether to check current MN protocol or not */
|
|
bool check_mn_protocol;
|
|
};
|
|
|
|
extern const struct BIP9DeploymentInfo VersionBitsDeploymentInfo[];
|
|
|
|
/**
|
|
* Abstract class that implements BIP9-style threshold logic, and caches results.
|
|
*/
|
|
class AbstractThresholdConditionChecker {
|
|
protected:
|
|
virtual bool Condition(const CBlockIndex* pindex, const Consensus::Params& params) const =0;
|
|
virtual int64_t BeginTime(const Consensus::Params& params) const =0;
|
|
virtual int64_t EndTime(const Consensus::Params& params) const =0;
|
|
virtual int Period(const Consensus::Params& params) const =0;
|
|
virtual int Threshold(const Consensus::Params& params) const =0;
|
|
|
|
public:
|
|
// Note that the function below takes a pindexPrev as input: they compute information for block B based on its parent.
|
|
ThresholdState GetStateFor(const CBlockIndex* pindexPrev, const Consensus::Params& params, ThresholdConditionCache& cache) const;
|
|
};
|
|
|
|
struct VersionBitsCache
|
|
{
|
|
ThresholdConditionCache caches[Consensus::MAX_VERSION_BITS_DEPLOYMENTS];
|
|
|
|
void Clear();
|
|
};
|
|
|
|
ThresholdState VersionBitsState(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache);
|
|
uint32_t VersionBitsMask(const Consensus::Params& params, Consensus::DeploymentPos pos);
|
|
|
|
#endif
|