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Deprecate confusing blockmaxsize, fix getmininginfo output

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* This removes block-size-limiting code in favor of GBT clients
  doing the limiting themselves (if at all).
* -blockmaxsize is deprecated and only used to calculate an implied
  blockmaxweight, addressing confusion from multiple users.
* getmininginfo's currentblocksize return value was returning
  garbage values, and has been removed, also removing a
  GetSerializeSize call in some block generation inner loops and
  potentially addressing some performance edge cases.
This commit is contained in:
Matt Corallo
2017-08-24 11:36:07 -04:00
parent 31e72b284e
commit ba206d2c63
7 changed files with 13 additions and 46 deletions
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38
src/miner.cpp
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@@ -43,7 +43,6 @@
// its ancestors.
uint64_t nLastBlockTx = 0;
uint64_t nLastBlockSize = 0;
uint64_t nLastBlockWeight = 0;
int64_t UpdateTime(CBlockHeader* pblock, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev)
@@ -64,7 +63,6 @@ int64_t UpdateTime(CBlockHeader* pblock, const Consensus::Params& consensusParam
BlockAssembler::Options::Options() {
blockMinFeeRate = CFeeRate(DEFAULT_BLOCK_MIN_TX_FEE);
nBlockMaxWeight = DEFAULT_BLOCK_MAX_WEIGHT;
nBlockMaxSize = DEFAULT_BLOCK_MAX_SIZE;
}
BlockAssembler::BlockAssembler(const CChainParams& params, const Options& options) : chainparams(params)
@@ -72,10 +70,6 @@ BlockAssembler::BlockAssembler(const CChainParams& params, const Options& option
blockMinFeeRate = options.blockMinFeeRate;
// Limit weight to between 4K and MAX_BLOCK_WEIGHT-4K for sanity:
nBlockMaxWeight = std::max<size_t>(4000, std::min<size_t>(MAX_BLOCK_WEIGHT - 4000, options.nBlockMaxWeight));
// Limit size to between 1K and MAX_BLOCK_SERIALIZED_SIZE-1K for sanity:
nBlockMaxSize = std::max<size_t>(1000, std::min<size_t>(MAX_BLOCK_SERIALIZED_SIZE - 1000, options.nBlockMaxSize));
// Whether we need to account for byte usage (in addition to weight usage)
fNeedSizeAccounting = (nBlockMaxSize < MAX_BLOCK_SERIALIZED_SIZE - 1000);
}
static BlockAssembler::Options DefaultOptions(const CChainParams& params)
@@ -85,20 +79,7 @@ static BlockAssembler::Options DefaultOptions(const CChainParams& params)
// If only one is given, only restrict the specified resource.
// If both are given, restrict both.
BlockAssembler::Options options;
options.nBlockMaxWeight = DEFAULT_BLOCK_MAX_WEIGHT;
options.nBlockMaxSize = DEFAULT_BLOCK_MAX_SIZE;
bool fWeightSet = false;
if (gArgs.IsArgSet("-blockmaxweight")) {
options.nBlockMaxWeight = gArgs.GetArg("-blockmaxweight", DEFAULT_BLOCK_MAX_WEIGHT);
options.nBlockMaxSize = MAX_BLOCK_SERIALIZED_SIZE;
fWeightSet = true;
}
if (gArgs.IsArgSet("-blockmaxsize")) {
options.nBlockMaxSize = gArgs.GetArg("-blockmaxsize", DEFAULT_BLOCK_MAX_SIZE);
if (!fWeightSet) {
options.nBlockMaxWeight = options.nBlockMaxSize * WITNESS_SCALE_FACTOR;
}
}
options.nBlockMaxWeight = gArgs.GetArg("-blockmaxweight", DEFAULT_BLOCK_MAX_WEIGHT);
if (gArgs.IsArgSet("-blockmintxfee")) {
CAmount n = 0;
ParseMoney(gArgs.GetArg("-blockmintxfee", ""), n);
@@ -116,7 +97,6 @@ void BlockAssembler::resetBlock()
inBlock.clear();
// Reserve space for coinbase tx
nBlockSize = 1000;
nBlockWeight = 4000;
nBlockSigOpsCost = 400;
fIncludeWitness = false;
@@ -176,7 +156,6 @@ std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(const CScript& sc
int64_t nTime1 = GetTimeMicros();
nLastBlockTx = nBlockTx;
nLastBlockSize = nBlockSize;
nLastBlockWeight = nBlockWeight;
// Create coinbase transaction.
@@ -191,8 +170,7 @@ std::unique_ptr<CBlockTemplate> BlockAssembler::CreateNewBlock(const CScript& sc
pblocktemplate->vchCoinbaseCommitment = GenerateCoinbaseCommitment(*pblock, pindexPrev, chainparams.GetConsensus());
pblocktemplate->vTxFees[0] = -nFees;
uint64_t nSerializeSize = GetSerializeSize(*pblock, SER_NETWORK, PROTOCOL_VERSION);
LogPrintf("CreateNewBlock(): total size: %u block weight: %u txs: %u fees: %ld sigops %d\n", nSerializeSize, GetBlockWeight(*pblock), nBlockTx, nFees, nBlockSigOpsCost);
LogPrintf("CreateNewBlock(): block weight: %u txs: %u fees: %ld sigops %d\n", GetBlockWeight(*pblock), nBlockTx, nFees, nBlockSigOpsCost);
// Fill in header
pblock->hashPrevBlock = pindexPrev->GetBlockHash();
@@ -239,22 +217,13 @@ bool BlockAssembler::TestPackage(uint64_t packageSize, int64_t packageSigOpsCost
// - transaction finality (locktime)
// - premature witness (in case segwit transactions are added to mempool before
// segwit activation)
// - serialized size (in case -blockmaxsize is in use)
bool BlockAssembler::TestPackageTransactions(const CTxMemPool::setEntries& package)
{
uint64_t nPotentialBlockSize = nBlockSize; // only used with fNeedSizeAccounting
for (const CTxMemPool::txiter it : package) {
if (!IsFinalTx(it->GetTx(), nHeight, nLockTimeCutoff))
return false;
if (!fIncludeWitness && it->GetTx().HasWitness())
return false;
if (fNeedSizeAccounting) {
uint64_t nTxSize = ::GetSerializeSize(it->GetTx(), SER_NETWORK, PROTOCOL_VERSION);
if (nPotentialBlockSize + nTxSize >= nBlockMaxSize) {
return false;
}
nPotentialBlockSize += nTxSize;
}
}
return true;
}
@@ -264,9 +233,6 @@ void BlockAssembler::AddToBlock(CTxMemPool::txiter iter)
pblock->vtx.emplace_back(iter->GetSharedTx());
pblocktemplate->vTxFees.push_back(iter->GetFee());
pblocktemplate->vTxSigOpsCost.push_back(iter->GetSigOpCost());
if (fNeedSizeAccounting) {
nBlockSize += ::GetSerializeSize(iter->GetTx(), SER_NETWORK, PROTOCOL_VERSION);
}
nBlockWeight += iter->GetTxWeight();
++nBlockTx;
nBlockSigOpsCost += iter->GetSigOpCost();