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[doc] Add comments for chainparams.h, validation.cpp

This commit is contained in:
James O'Beirne 2018-04-17 17:15:20 -04:00
parent 0d6992168c
commit 18326ae2a7
2 changed files with 22 additions and 0 deletions
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6
src/chainparams.h
View File

@ -25,6 +25,12 @@ struct CCheckpointData {
MapCheckpoints mapCheckpoints;
};
/**
* Holds various statistics on transactions within a chain. Used to estimate
* verification progress during chain sync.
*
* See also: CChainParams::TxData, GuessVerificationProgress.
*/
struct ChainTxData {
int64_t nTime;
int64_t nTxCount;

16
src/validation.cpp
View File

@ -154,6 +154,10 @@ public:
bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, std::shared_ptr<const CBlock> pblock);
/**
* If a block header hasn't already been seen, call CheckBlockHeader on it, ensure
* that it doesn't descend from an invalid block, and then add it to mapBlockIndex.
*/
bool AcceptBlockHeader(const CBlockHeader& block, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex);
bool AcceptBlock(const std::shared_ptr<const CBlock>& pblock, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex, bool fRequested, const CDiskBlockPos* dbp, bool* fNewBlock);
@ -185,6 +189,11 @@ private:
CBlockIndex* AddToBlockIndex(const CBlockHeader& block);
/** Create a new block index entry for a given block hash */
CBlockIndex * InsertBlockIndex(const uint256& hash);
/**
* Make various assertions about the state of the block index.
*
* By default this only executes fully when using the Regtest chain; see: fCheckBlockIndex.
*/
void CheckBlockIndex(const Consensus::Params& consensusParams);
void InvalidBlockFound(CBlockIndex *pindex, const CValidationState &state);
@ -2625,6 +2634,10 @@ static void NotifyHeaderTip() {
* Make the best chain active, in multiple steps. The result is either failure
* or an activated best chain. pblock is either nullptr or a pointer to a block
* that is already loaded (to avoid loading it again from disk).
*
* ActivateBestChain is split into steps (see ActivateBestChainStep) so that
* we avoid holding cs_main for an extended period of time; the length of this
* call may be quite long during reindexing or a substantial reorg.
*/
bool CChainState::ActivateBestChain(CValidationState &state, const CChainParams& chainparams, std::shared_ptr<const CBlock> pblock) {
// Note that while we're often called here from ProcessNewBlock, this is
@ -3323,6 +3336,9 @@ bool CChainState::AcceptBlockHeader(const CBlockHeader& block, CValidationState&
if (!ContextualCheckBlockHeader(block, state, chainparams, pindexPrev, GetAdjustedTime()))
return error("%s: Consensus::ContextualCheckBlockHeader: %s, %s", __func__, hash.ToString(), FormatStateMessage(state));
// If the previous block index isn't valid, determine if it descends from any block which
// has been found invalid (g_failed_blocks), then mark pindexPrev and any blocks
// between them as failed.
if (!pindexPrev->IsValid(BLOCK_VALID_SCRIPTS)) {
for (const CBlockIndex* failedit : g_failed_blocks) {
if (pindexPrev->GetAncestor(failedit->nHeight) == failedit) {