Added verbose BIP9 details
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5a8b402c59
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@ -4136,6 +4136,12 @@ ThresholdState VersionBitsTipState(const Consensus::Params& params, Consensus::D
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return VersionBitsState(chainActive.Tip(), params, pos, versionbitscache);
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}
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BIP9Stats VersionBitsTipStatistics(const Consensus::Params& params, Consensus::DeploymentPos pos)
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{
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LOCK(cs_main);
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return VersionBitsStatistics(chainActive.Tip(), params, pos);
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}
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int VersionBitsTipStateSinceHeight(const Consensus::Params& params, Consensus::DeploymentPos pos)
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{
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LOCK(cs_main);
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@ -258,6 +258,9 @@ ThresholdState VersionBitsTipState(const Consensus::Params& params, Consensus::D
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/** Get the block height at which the BIP9 deployment switched into the state for the block building on the current tip. */
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int VersionBitsTipStateSinceHeight(const Consensus::Params& params, Consensus::DeploymentPos pos);
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/** Get the numerical statistics for the BIP9 state for a given deployment at the current tip. */
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BIP9Stats VersionBitsTipStatistics(const Consensus::Params& params, Consensus::DeploymentPos pos);
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struct CNodeStateStats {
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int nMisbehavior;
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int nSyncHeight;
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@ -651,6 +651,18 @@ static UniValue BIP9SoftForkDesc(const Consensus::Params& consensusParams, Conse
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}
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rv.push_back(Pair("startTime", consensusParams.vDeployments[id].nStartTime));
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rv.push_back(Pair("timeout", consensusParams.vDeployments[id].nTimeout));
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rv.push_back(Pair("since", VersionBitsTipStateSinceHeight(consensusParams, id)));
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if (THRESHOLD_STARTED == thresholdState)
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{
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UniValue statsUV(UniValue::VOBJ);
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BIP9Stats statsStruct = VersionBitsTipStatistics(consensusParams, id);
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statsUV.push_back(Pair("period", statsStruct.period));
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statsUV.push_back(Pair("threshold", statsStruct.threshold));
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statsUV.push_back(Pair("elapsed", statsStruct.elapsed));
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statsUV.push_back(Pair("count", statsStruct.count));
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statsUV.push_back(Pair("possible", statsStruct.possible));
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rv.push_back(Pair("statistics", statsUV));
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}
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return rv;
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}
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@ -690,6 +702,13 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
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" \"bit\": xx, (numeric) the bit, 0-28, in the block version field used to signal this soft fork\n"
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" \"startTime\": xx, (numeric) the minimum median time past of a block at which the bit gains its meaning\n"
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" \"timeout\": xx (numeric) the median time past of a block at which the deployment is considered failed if not yet locked in\n"
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" \"since\": xx, (numeric) height of the first block to which the status applies\n"
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" \"statistics\": { (object) numeric statistics about BIP9 signalling for a softfork (only for \"started\" status)\n"
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" \"period\": xx, (numeric) the length in blocks of the BIP9 signalling period \n"
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" \"threshold\": xx, (numeric) the number of blocks with the version bit set required to activate the feature \n"
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" \"elapsed\": xx, (numeric) the number of blocks elapsed since the beginning of the current period \n"
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" \"count\": xx, (numeric) the number of blocks with the version bit set in the current period \n"
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" \"possible\": xx (boolean) returns false if there are not enough blocks left in this period to pass activation threshold \n"
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" }\n"
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"\nExamples:\n"
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+ HelpExampleCli("getblockchaininfo", "")
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@ -13,6 +13,36 @@ const struct BIP9DeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION
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}
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};
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// return the numerical statistics of blocks signalling the specified BIP9 condition in this current period
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BIP9Stats AbstractThresholdConditionChecker::GetStateStatisticsFor(const CBlockIndex* pindex, const Consensus::Params& params) const
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{
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BIP9Stats stats;
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stats.period = Period(params);
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stats.threshold = Threshold(params);
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if (pindex == NULL)
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return stats;
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// Find beginning of period
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const CBlockIndex* pindexEndOfPrevPeriod = pindex->GetAncestor(pindex->nHeight - ((pindex->nHeight + 1) % stats.period));
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stats.elapsed = pindex->nHeight - pindexEndOfPrevPeriod->nHeight;
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// Count from current block to beginning of period
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int count = 0;
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const CBlockIndex* currentIndex = pindex;
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while (pindexEndOfPrevPeriod->nHeight != currentIndex->nHeight){
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if (Condition(currentIndex, params))
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count++;
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currentIndex = currentIndex->pprev;
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}
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stats.count = count;
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stats.possible = (stats.period - stats.threshold ) >= (stats.elapsed - count);
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return stats;
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}
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ThresholdState AbstractThresholdConditionChecker::GetStateFor(const CBlockIndex* pindexPrev, const Consensus::Params& params, ThresholdConditionCache& cache) const
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{
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int nPeriod = Period(params);
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@ -159,6 +189,12 @@ ThresholdState VersionBitsState(const CBlockIndex* pindexPrev, const Consensus::
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return VersionBitsConditionChecker(pos).GetStateFor(pindexPrev, params, cache.caches[pos]);
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}
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BIP9Stats VersionBitsStatistics(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos)
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{
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return VersionBitsConditionChecker(pos).GetStateStatisticsFor(pindexPrev, params);
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}
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int VersionBitsStateSinceHeight(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache)
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{
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return VersionBitsConditionChecker(pos).GetStateSinceHeightFor(pindexPrev, params, cache.caches[pos]);
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@ -37,6 +37,14 @@ struct BIP9DeploymentInfo {
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bool gbt_force;
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};
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struct BIP9Stats {
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int period;
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int threshold;
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int elapsed;
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int count;
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bool possible;
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};
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extern const struct BIP9DeploymentInfo VersionBitsDeploymentInfo[];
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/**
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@ -51,6 +59,7 @@ protected:
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virtual int Threshold(const Consensus::Params& params) const =0;
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public:
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BIP9Stats GetStateStatisticsFor(const CBlockIndex* pindex, const Consensus::Params& params) const;
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// Note that the functions below take a pindexPrev as input: they compute information for block B based on its parent.
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ThresholdState GetStateFor(const CBlockIndex* pindexPrev, const Consensus::Params& params, ThresholdConditionCache& cache) const;
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int GetStateSinceHeightFor(const CBlockIndex* pindexPrev, const Consensus::Params& params, ThresholdConditionCache& cache) const;
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@ -64,6 +73,7 @@ struct VersionBitsCache
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};
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ThresholdState VersionBitsState(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache);
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BIP9Stats VersionBitsStatistics(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos);
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int VersionBitsStateSinceHeight(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache);
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uint32_t VersionBitsMask(const Consensus::Params& params, Consensus::DeploymentPos pos);
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