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author | Wladimir J. van der Laan <laanwj@gmail.com> | 2017-05-23 19:07:29 +0200 |
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committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2017-05-23 19:12:29 +0200 |
commit | 46771514fa86b9a5a0e0af34c1abfa1da22212f7 (patch) | |
tree | b51c2bba5880fa9c9d0a578d948d249847a41967 /src | |
parent | 433c57aa6f304153f1b8740e0aa11b297f7fd143 (diff) | |
parent | 557c9a68fb72aeb535f2efe3cc82d3f5e66c6ad3 (diff) | |
download | bitcoin-46771514fa86b9a5a0e0af34c1abfa1da22212f7.tar.xz |
Merge #9571: RPC: getblockchaininfo returns BIP signaling statistics
557c9a6 RPC: getblockchaininfo: BIP9 stats (Matthew Zipkin)
Tree-SHA512: ecf0bf47f04f92becc77acc649fdfa270e768939acce42df39d30069398d40d9a30539862f7c307e08239f78d5c58c470ca5f6e717d2ab8e24db9be0dd7bec0c
Diffstat (limited to 'src')
-rw-r--r-- | src/rpc/blockchain.cpp | 22 | ||||
-rw-r--r-- | src/validation.cpp | 6 | ||||
-rw-r--r-- | src/validation.h | 3 | ||||
-rw-r--r-- | src/versionbits.cpp | 36 | ||||
-rw-r--r-- | src/versionbits.h | 10 |
5 files changed, 74 insertions, 3 deletions
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp index 9d72a23e6d..b4b160aac9 100644 --- a/src/rpc/blockchain.cpp +++ b/src/rpc/blockchain.cpp @@ -187,7 +187,7 @@ void RPCNotifyBlockChange(bool ibd, const CBlockIndex * pindex) latestblock.hash = pindex->GetBlockHash(); latestblock.height = pindex->nHeight; } - cond_blockchange.notify_all(); + cond_blockchange.notify_all(); } UniValue waitfornewblock(const JSONRPCRequest& request) @@ -1074,6 +1074,17 @@ static UniValue BIP9SoftForkDesc(const Consensus::Params& consensusParams, Conse rv.push_back(Pair("startTime", consensusParams.vDeployments[id].nStartTime)); rv.push_back(Pair("timeout", consensusParams.vDeployments[id].nTimeout)); rv.push_back(Pair("since", VersionBitsTipStateSinceHeight(consensusParams, id))); + if (THRESHOLD_STARTED == thresholdState) + { + UniValue statsUV(UniValue::VOBJ); + BIP9Stats statsStruct = VersionBitsTipStatistics(consensusParams, id); + statsUV.push_back(Pair("period", statsStruct.period)); + statsUV.push_back(Pair("threshold", statsStruct.threshold)); + statsUV.push_back(Pair("elapsed", statsStruct.elapsed)); + statsUV.push_back(Pair("count", statsStruct.count)); + statsUV.push_back(Pair("possible", statsStruct.possible)); + rv.push_back(Pair("statistics", statsUV)); + } return rv; } @@ -1119,7 +1130,14 @@ UniValue getblockchaininfo(const JSONRPCRequest& request) " \"bit\": xx, (numeric) the bit (0-28) in the block version field used to signal this softfork (only for \"started\" status)\n" " \"startTime\": xx, (numeric) the minimum median time past of a block at which the bit gains its meaning\n" " \"timeout\": xx, (numeric) the median time past of a block at which the deployment is considered failed if not yet locked in\n" - " \"since\": xx (numeric) height of the first block to which the status applies\n" + " \"since\": xx, (numeric) height of the first block to which the status applies\n" + " \"statistics\": { (object) numeric statistics about BIP9 signalling for a softfork (only for \"started\" status)\n" + " \"period\": xx, (numeric) the length in blocks of the BIP9 signalling period \n" + " \"threshold\": xx, (numeric) the number of blocks with the version bit set required to activate the feature \n" + " \"elapsed\": xx, (numeric) the number of blocks elapsed since the beginning of the current period \n" + " \"count\": xx, (numeric) the number of blocks with the version bit set in the current period \n" + " \"possible\": xx (boolean) returns false if there are not enough blocks left in this period to pass activation threshold \n" + " }\n" " }\n" " }\n" "}\n" diff --git a/src/validation.cpp b/src/validation.cpp index 73466b9df7..89358f9603 100644 --- a/src/validation.cpp +++ b/src/validation.cpp @@ -3935,6 +3935,12 @@ ThresholdState VersionBitsTipState(const Consensus::Params& params, Consensus::D return VersionBitsState(chainActive.Tip(), params, pos, versionbitscache); } +BIP9Stats VersionBitsTipStatistics(const Consensus::Params& params, Consensus::DeploymentPos pos) +{ + LOCK(cs_main); + return VersionBitsStatistics(chainActive.Tip(), params, pos); +} + int VersionBitsTipStateSinceHeight(const Consensus::Params& params, Consensus::DeploymentPos pos) { LOCK(cs_main); diff --git a/src/validation.h b/src/validation.h index 743a2973f8..b19c3ff4f7 100644 --- a/src/validation.h +++ b/src/validation.h @@ -339,6 +339,9 @@ std::string FormatStateMessage(const CValidationState &state); /** Get the BIP9 state for a given deployment at the current tip. */ ThresholdState VersionBitsTipState(const Consensus::Params& params, Consensus::DeploymentPos pos); +/** Get the numerical statistics for the BIP9 state for a given deployment at the current tip. */ +BIP9Stats VersionBitsTipStatistics(const Consensus::Params& params, Consensus::DeploymentPos pos); + /** Get the block height at which the BIP9 deployment switched into the state for the block building on the current tip. */ int VersionBitsTipStateSinceHeight(const Consensus::Params& params, Consensus::DeploymentPos pos); diff --git a/src/versionbits.cpp b/src/versionbits.cpp index 8a7cce7485..80786233f5 100644 --- a/src/versionbits.cpp +++ b/src/versionbits.cpp @@ -3,7 +3,6 @@ // file COPYING or http://www.opensource.org/licenses/mit-license.php. #include "versionbits.h" - #include "consensus/params.h" const struct BIP9DeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_BITS_DEPLOYMENTS] = { @@ -105,6 +104,36 @@ ThresholdState AbstractThresholdConditionChecker::GetStateFor(const CBlockIndex* return state; } +// return the numerical statistics of blocks signalling the specified BIP9 condition in this current period +BIP9Stats AbstractThresholdConditionChecker::GetStateStatisticsFor(const CBlockIndex* pindex, const Consensus::Params& params) const +{ + BIP9Stats stats; + + stats.period = Period(params); + stats.threshold = Threshold(params); + + if (pindex == NULL) + return stats; + + // Find beginning of period + const CBlockIndex* pindexEndOfPrevPeriod = pindex->GetAncestor(pindex->nHeight - ((pindex->nHeight + 1) % stats.period)); + stats.elapsed = pindex->nHeight - pindexEndOfPrevPeriod->nHeight; + + // Count from current block to beginning of period + int count = 0; + const CBlockIndex* currentIndex = pindex; + while (pindexEndOfPrevPeriod->nHeight != currentIndex->nHeight){ + if (Condition(currentIndex, params)) + count++; + currentIndex = currentIndex->pprev; + } + + stats.count = count; + stats.possible = (stats.period - stats.threshold ) >= (stats.elapsed - count); + + return stats; +} + int AbstractThresholdConditionChecker::GetStateSinceHeightFor(const CBlockIndex* pindexPrev, const Consensus::Params& params, ThresholdConditionCache& cache) const { const ThresholdState initialState = GetStateFor(pindexPrev, params, cache); @@ -167,6 +196,11 @@ ThresholdState VersionBitsState(const CBlockIndex* pindexPrev, const Consensus:: return VersionBitsConditionChecker(pos).GetStateFor(pindexPrev, params, cache.caches[pos]); } +BIP9Stats VersionBitsStatistics(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos) +{ + return VersionBitsConditionChecker(pos).GetStateStatisticsFor(pindexPrev, params); +} + int VersionBitsStateSinceHeight(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache) { return VersionBitsConditionChecker(pos).GetStateSinceHeightFor(pindexPrev, params, cache.caches[pos]); diff --git a/src/versionbits.h b/src/versionbits.h index 7a929266aa..f1d31ea0af 100644 --- a/src/versionbits.h +++ b/src/versionbits.h @@ -37,6 +37,14 @@ struct BIP9DeploymentInfo { bool gbt_force; }; +struct BIP9Stats { + int period; + int threshold; + int elapsed; + int count; + bool possible; +}; + extern const struct BIP9DeploymentInfo VersionBitsDeploymentInfo[]; /** @@ -51,6 +59,7 @@ protected: virtual int Threshold(const Consensus::Params& params) const =0; public: + BIP9Stats GetStateStatisticsFor(const CBlockIndex* pindex, const Consensus::Params& params) const; // Note that the functions below take 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; int GetStateSinceHeightFor(const CBlockIndex* pindexPrev, const Consensus::Params& params, ThresholdConditionCache& cache) const; @@ -64,6 +73,7 @@ struct VersionBitsCache }; ThresholdState VersionBitsState(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache); +BIP9Stats VersionBitsStatistics(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos); int VersionBitsStateSinceHeight(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache); uint32_t VersionBitsMask(const Consensus::Params& params, Consensus::DeploymentPos pos); |