Bitcoin Core  0.20.99
P2P Digital Currency
Classes | Typedefs | Enumerations | Functions | Variables
validation.h File Reference
#include <amount.h>
#include <coins.h>
#include <crypto/common.h>
#include <fs.h>
#include <optional.h>
#include <policy/feerate.h>
#include <protocol.h>
#include <script/script_error.h>
#include <sync.h>
#include <txmempool.h>
#include <txdb.h>
#include <versionbits.h>
#include <serialize.h>
#include <atomic>
#include <map>
#include <memory>
#include <set>
#include <stdint.h>
#include <utility>
#include <vector>
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Classes

struct  BlockHasher
 
class  CScriptCheck
 Closure representing one script verification Note that this stores references to the spending transaction. More...
 
class  CVerifyDB
 RAII wrapper for VerifyDB: Verify consistency of the block and coin databases. More...
 
struct  CBlockIndexWorkComparator
 
class  BlockManager
 Maintains a tree of blocks (stored in m_block_index) which is consulted to determine where the most-work tip is. More...
 
class  CoinsViews
 A convenience class for constructing the CCoinsView* hierarchy used to facilitate access to the UTXO set. More...
 
class  CChainState
 CChainState stores and provides an API to update our local knowledge of the current best chain. More...
 
class  ChainstateManager
 Provides an interface for creating and interacting with one or two chainstates: an IBD chainstate generated by downloading blocks, and an optional snapshot chainstate loaded from a UTXO snapshot. More...
 

Typedefs

typedef std::unordered_map< uint256, CBlockIndex *, BlockHasherBlockMap
 

Enumerations

enum  SynchronizationState { SynchronizationState::INIT_REINDEX, SynchronizationState::INIT_DOWNLOAD, SynchronizationState::POST_INIT }
 Current sync state passed to tip changed callbacks. More...
 
enum  DisconnectResult { DISCONNECT_OK, DISCONNECT_UNCLEAN, DISCONNECT_FAILED }
 
enum  FlushStateMode { FlushStateMode::NONE, FlushStateMode::IF_NEEDED, FlushStateMode::PERIODIC, FlushStateMode::ALWAYS }
 
enum  CoinsCacheSizeState { CoinsCacheSizeState::CRITICAL = 2, CoinsCacheSizeState::LARGE = 1, CoinsCacheSizeState::OK = 0 }
 

Functions

FILE * OpenBlockFile (const FlatFilePos &pos, bool fReadOnly=false)
 Open a block file (blk?????.dat) More...
 
fs::path GetBlockPosFilename (const FlatFilePos &pos)
 Translation to a filesystem path. More...
 
void LoadExternalBlockFile (const CChainParams &chainparams, FILE *fileIn, FlatFilePos *dbp=nullptr)
 Import blocks from an external file. More...
 
bool LoadGenesisBlock (const CChainParams &chainparams)
 Ensures we have a genesis block in the block tree, possibly writing one to disk. More...
 
void UnloadBlockIndex ()
 Unload database information. More...
 
void ThreadScriptCheck (int worker_num)
 Run an instance of the script checking thread. More...
 
bool GetTransaction (const uint256 &hash, CTransactionRef &tx, const Consensus::Params &params, uint256 &hashBlock, const CBlockIndex *const blockIndex=nullptr)
 Retrieve a transaction (from memory pool, or from disk, if possible) More...
 
bool ActivateBestChain (BlockValidationState &state, const CChainParams &chainparams, std::shared_ptr< const CBlock > pblock=std::shared_ptr< const CBlock >())
 Find the best known block, and make it the tip of the block chain. More...
 
CAmount GetBlockSubsidy (int nHeight, const Consensus::Params &consensusParams)
 
double GuessVerificationProgress (const ChainTxData &data, const CBlockIndex *pindex)
 Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip). More...
 
uint64_t CalculateCurrentUsage ()
 Calculate the amount of disk space the block & undo files currently use. More...
 
void UnlinkPrunedFiles (const std::set< int > &setFilesToPrune)
 Actually unlink the specified files. More...
 
void PruneBlockFilesManual (int nManualPruneHeight)
 Prune block files up to a given height. More...
 
bool AcceptToMemoryPool (CTxMemPool &pool, TxValidationState &state, const CTransactionRef &tx, std::list< CTransactionRef > *plTxnReplaced, bool bypass_limits, const CAmount nAbsurdFee, bool test_accept=false) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 (try to) add transaction to memory pool plTxnReplaced will be appended to with all transactions replaced from mempool More...
 
ThresholdState VersionBitsTipState (const Consensus::Params &params, Consensus::DeploymentPos pos)
 Get the BIP9 state for a given deployment at the current tip. More...
 
BIP9Stats VersionBitsTipStatistics (const Consensus::Params &params, Consensus::DeploymentPos pos)
 Get the numerical statistics for the BIP9 state for a given deployment at the current tip. More...
 
int VersionBitsTipStateSinceHeight (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. More...
 
void UpdateCoins (const CTransaction &tx, CCoinsViewCache &inputs, int nHeight)
 Apply the effects of this transaction on the UTXO set represented by view. More...
 
bool CheckFinalTx (const CTransaction &tx, int flags=-1) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 Transaction validation functions. More...
 
bool TestLockPointValidity (const LockPoints *lp) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 Test whether the LockPoints height and time are still valid on the current chain. More...
 
bool CheckSequenceLocks (const CTxMemPool &pool, const CTransaction &tx, int flags, LockPoints *lp=nullptr, bool useExistingLockPoints=false) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 Check if transaction will be BIP 68 final in the next block to be created. More...
 
void InitScriptExecutionCache ()
 Initializes the script-execution cache. More...
 
bool ReadBlockFromDisk (CBlock &block, const FlatFilePos &pos, const Consensus::Params &consensusParams)
 Functions for disk access for blocks. More...
 
bool ReadBlockFromDisk (CBlock &block, const CBlockIndex *pindex, const Consensus::Params &consensusParams)
 
bool ReadRawBlockFromDisk (std::vector< uint8_t > &block, const FlatFilePos &pos, const CMessageHeader::MessageStartChars &message_start)
 
bool ReadRawBlockFromDisk (std::vector< uint8_t > &block, const CBlockIndex *pindex, const CMessageHeader::MessageStartChars &message_start)
 
bool UndoReadFromDisk (CBlockUndo &blockundo, const CBlockIndex *pindex)
 
bool CheckBlock (const CBlock &block, BlockValidationState &state, const Consensus::Params &consensusParams, bool fCheckPOW=true, bool fCheckMerkleRoot=true)
 Functions for validating blocks and updating the block tree. More...
 
bool TestBlockValidity (BlockValidationState &state, const CChainParams &chainparams, const CBlock &block, CBlockIndex *pindexPrev, bool fCheckPOW=true, bool fCheckMerkleRoot=true) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 Check a block is completely valid from start to finish (only works on top of our current best block) More...
 
bool IsWitnessEnabled (const CBlockIndex *pindexPrev, const Consensus::Params &params)
 Check whether witness commitments are required for a block, and whether to enforce NULLDUMMY (BIP 147) rules. More...
 
int GetWitnessCommitmentIndex (const CBlock &block)
 Compute at which vout of the block's coinbase transaction the witness commitment occurs, or -1 if not found. More...
 
void UpdateUncommittedBlockStructures (CBlock &block, const CBlockIndex *pindexPrev, const Consensus::Params &consensusParams)
 Update uncommitted block structures (currently: only the witness reserved value). More...
 
std::vector< unsigned char > GenerateCoinbaseCommitment (CBlock &block, const CBlockIndex *pindexPrev, const Consensus::Params &consensusParams)
 Produce the necessary coinbase commitment for a block (modifies the hash, don't call for mined blocks). More...
 
CBlockIndexLookupBlockIndex (const uint256 &hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 
CBlockIndexFindForkInGlobalIndex (const CChain &chain, const CBlockLocator &locator) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 Find the last common block between the parameter chain and a locator. More...
 
bool PreciousBlock (BlockValidationState &state, const CChainParams &params, CBlockIndex *pindex) LOCKS_EXCLUDED(cs_main)
 Mark a block as precious and reorganize. More...
 
bool InvalidateBlock (BlockValidationState &state, const CChainParams &chainparams, CBlockIndex *pindex) LOCKS_EXCLUDED(cs_main)
 Mark a block as invalid. More...
 
void ResetBlockFailureFlags (CBlockIndex *pindex) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 Remove invalidity status from a block and its descendants. More...
 
ChainstateManager g_chainman GUARDED_BY (::cs_main)
 DEPRECATED! Please use node.chainman instead. More...
 
CChainStateChainstateActive ()
 
CChainChainActive ()
 
BlockMapBlockIndex ()
 
int GetSpendHeight (const CCoinsViewCache &inputs)
 Return the spend height, which is one more than the inputs.GetBestBlock(). More...
 
int32_t ComputeBlockVersion (const CBlockIndex *pindexPrev, const Consensus::Params &params)
 Determine what nVersion a new block should use. More...
 
CBlockFileInfoGetBlockFileInfo (size_t n)
 Get block file info entry for one block file. More...
 
bool DumpMempool (const CTxMemPool &pool)
 Dump the mempool to disk. More...
 
bool LoadMempool (CTxMemPool &pool)
 Load the mempool from disk. More...
 
bool IsBlockPruned (const CBlockIndex *pblockindex)
 Check whether the block associated with this index entry is pruned or not. More...
 

Variables

static const unsigned int DEFAULT_MIN_RELAY_TX_FEE = 1000
 Default for -minrelaytxfee, minimum relay fee for transactions. More...
 
static const unsigned int DEFAULT_ANCESTOR_LIMIT = 25
 Default for -limitancestorcount, max number of in-mempool ancestors. More...
 
static const unsigned int DEFAULT_ANCESTOR_SIZE_LIMIT = 101
 Default for -limitancestorsize, maximum kilobytes of tx + all in-mempool ancestors. More...
 
static const unsigned int DEFAULT_DESCENDANT_LIMIT = 25
 Default for -limitdescendantcount, max number of in-mempool descendants. More...
 
static const unsigned int DEFAULT_DESCENDANT_SIZE_LIMIT = 101
 Default for -limitdescendantsize, maximum kilobytes of in-mempool descendants. More...
 
static const unsigned int DEFAULT_MEMPOOL_EXPIRY = 336
 Default for -mempoolexpiry, expiration time for mempool transactions in hours. More...
 
static const unsigned int MAX_BLOCKFILE_SIZE = 0x8000000
 The maximum size of a blk?????.dat file (since 0.8) More...
 
static const int MAX_SCRIPTCHECK_THREADS = 15
 Maximum number of dedicated script-checking threads allowed. More...
 
static const int DEFAULT_SCRIPTCHECK_THREADS = 0
 -par default (number of script-checking threads, 0 = auto) More...
 
static const int64_t DEFAULT_MAX_TIP_AGE = 24 * 60 * 60
 
static const bool DEFAULT_CHECKPOINTS_ENABLED = true
 
static const bool DEFAULT_TXINDEX = false
 
static const char *const DEFAULT_BLOCKFILTERINDEX = "0"
 
static const unsigned int DEFAULT_BANSCORE_THRESHOLD = 100
 
static const bool DEFAULT_PERSIST_MEMPOOL = true
 Default for -persistmempool. More...
 
static const bool DEFAULT_FEEFILTER = true
 Default for using fee filter. More...
 
static const int DEFAULT_STOPATHEIGHT = 0
 Default for -stopatheight. More...
 
static const unsigned int MIN_BLOCKS_TO_KEEP = 288
 Block files containing a block-height within MIN_BLOCKS_TO_KEEP of ChainActive().Tip() will not be pruned. More...
 
static const signed int DEFAULT_CHECKBLOCKS = 6
 
static const unsigned int DEFAULT_CHECKLEVEL = 3
 
static const uint64_t MIN_DISK_SPACE_FOR_BLOCK_FILES = 550 * 1024 * 1024
 
static constexpr size_t MINIMUM_WITNESS_COMMITMENT {38}
 Minimum size of a witness commitment structure. More...
 
RecursiveMutex cs_main
 Mutex to guard access to validation specific variables, such as reading or changing the chainstate. More...
 
CBlockPolicyEstimator feeEstimator
 
CTxMemPool mempool
 
Mutex g_best_block_mutex
 
std::condition_variable g_best_block_cv
 
uint256 g_best_block
 
std::atomic_bool fImporting
 
std::atomic_bool fReindex
 
bool g_parallel_script_checks
 Whether there are dedicated script-checking threads running. More...
 
bool fRequireStandard
 
bool fCheckBlockIndex
 
bool fCheckpointsEnabled
 
size_t nCoinCacheUsage
 
CFeeRate minRelayTxFee
 A fee rate smaller than this is considered zero fee (for relaying, mining and transaction creation) More...
 
int64_t nMaxTipAge
 If the tip is older than this (in seconds), the node is considered to be in initial block download. More...
 
uint256 hashAssumeValid
 Block hash whose ancestors we will assume to have valid scripts without checking them. More...
 
arith_uint256 nMinimumChainWork
 Minimum work we will assume exists on some valid chain. More...
 
CBlockIndexpindexBestHeader
 Best header we've seen so far (used for getheaders queries' starting points). More...
 
bool fHavePruned
 Pruning-related variables and constants. More...
 
bool fPruneMode
 True if we're running in -prune mode. More...
 
uint64_t nPruneTarget
 Number of MiB of block files that we're trying to stay below. More...
 
std::unique_ptr< CBlockTreeDBpblocktree
 Global variable that points to the active block tree (protected by cs_main) More...
 
VersionBitsCache versionbitscache
 

Typedef Documentation

◆ BlockMap

typedef std::unordered_map<uint256, CBlockIndex*, BlockHasher> BlockMap

Definition at line 117 of file validation.h.

Enumeration Type Documentation

◆ CoinsCacheSizeState

enum CoinsCacheSizeState
strong
Enumerator
CRITICAL 

The coins cache is in immediate need of a flush.

LARGE 

The cache is at >= 90% capacity.

OK 

Definition at line 445 of file validation.h.

◆ DisconnectResult

Enumerator
DISCONNECT_OK 
DISCONNECT_UNCLEAN 
DISCONNECT_FAILED 

Definition at line 319 of file validation.h.

◆ FlushStateMode

enum FlushStateMode
strong
See also
CChainState::FlushStateToDisk
Enumerator
NONE 
IF_NEEDED 
PERIODIC 
ALWAYS 

Definition at line 329 of file validation.h.

◆ SynchronizationState

enum SynchronizationState
strong

Current sync state passed to tip changed callbacks.

Enumerator
INIT_REINDEX 
INIT_DOWNLOAD 
POST_INIT 

Definition at line 108 of file validation.h.

Function Documentation

◆ AcceptToMemoryPool()

bool AcceptToMemoryPool ( CTxMemPool pool,
TxValidationState state,
const CTransactionRef tx,
std::list< CTransactionRef > *  plTxnReplaced,
bool  bypass_limits,
const CAmount  nAbsurdFee,
bool  test_accept = false 
)

(try to) add transaction to memory pool plTxnReplaced will be appended to with all transactions replaced from mempool

Definition at line 1079 of file validation.cpp.

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◆ ActivateBestChain()

bool ActivateBestChain ( BlockValidationState state,
const CChainParams chainparams,
std::shared_ptr< const CBlock pblock = std::shared_ptr< const CBlock >() 
)

Find the best known block, and make it the tip of the block chain.

May not be called with cs_main held. May not be called in a validationinterface callback.

Definition at line 2940 of file validation.cpp.

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◆ BlockIndex()

BlockMap& BlockIndex ( )
Returns
the global block index map.

Definition at line 1317 of file validation.cpp.

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◆ CalculateCurrentUsage()

uint64_t CalculateCurrentUsage ( )

Calculate the amount of disk space the block & undo files currently use.

Calculate the amount of disk space the block & undo files currently use.

Definition at line 3888 of file validation.cpp.

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◆ ChainActive()

CChain& ChainActive ( )
Returns
the most-work chain.

Definition at line 108 of file validation.cpp.

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◆ ChainstateActive()

CChainState& ChainstateActive ( )
Returns
the most-work valid chainstate.

Definition at line 101 of file validation.cpp.

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◆ CheckBlock()

bool CheckBlock ( const CBlock block,
BlockValidationState state,
const Consensus::Params consensusParams,
bool  fCheckPOW = true,
bool  fCheckMerkleRoot = true 
)

Functions for validating blocks and updating the block tree.

Context-independent validity checks

Definition at line 3317 of file validation.cpp.

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◆ CheckFinalTx()

bool CheckFinalTx ( const CTransaction tx,
int  flags = -1 
)

Transaction validation functions.

Check if transaction will be final in the next block to be created.

Calls IsFinalTx() with current block height and appropriate block time.

See consensus/consensus.h for flag definitions.

Definition at line 206 of file validation.cpp.

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◆ CheckSequenceLocks()

bool CheckSequenceLocks ( const CTxMemPool pool,
const CTransaction tx,
int  flags,
LockPoints lp = nullptr,
bool  useExistingLockPoints = false 
)

Check if transaction will be BIP 68 final in the next block to be created.

Simulates calling SequenceLocks() with data from the tip of the current active chain. Optionally stores in LockPoints the resulting height and time calculated and the hash of the block needed for calculation or skips the calculation and uses the LockPoints passed in for evaluation. The LockPoints should not be considered valid if CheckSequenceLocks returns false.

See consensus/consensus.h for flag definitions.

Definition at line 256 of file validation.cpp.

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◆ ComputeBlockVersion()

int32_t ComputeBlockVersion ( const CBlockIndex pindexPrev,
const Consensus::Params params 
)

Determine what nVersion a new block should use.

Definition at line 1813 of file validation.cpp.

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◆ DumpMempool()

bool DumpMempool ( const CTxMemPool pool)

Dump the mempool to disk.

Definition at line 5093 of file validation.cpp.

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◆ FindForkInGlobalIndex()

CBlockIndex* FindForkInGlobalIndex ( const CChain chain,
const CBlockLocator locator 
)

Find the last common block between the parameter chain and a locator.

Definition at line 177 of file validation.cpp.

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◆ GenerateCoinbaseCommitment()

std::vector<unsigned char> GenerateCoinbaseCommitment ( CBlock block,
const CBlockIndex pindexPrev,
const Consensus::Params consensusParams 
)

Produce the necessary coinbase commitment for a block (modifies the hash, don't call for mined blocks).

Definition at line 3424 of file validation.cpp.

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◆ GetBlockFileInfo()

CBlockFileInfo* GetBlockFileInfo ( size_t  n)

Get block file info entry for one block file.

Definition at line 4973 of file validation.cpp.

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◆ GetBlockPosFilename()

fs::path GetBlockPosFilename ( const FlatFilePos pos)

Translation to a filesystem path.

Definition at line 4067 of file validation.cpp.

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◆ GetBlockSubsidy()

CAmount GetBlockSubsidy ( int  nHeight,
const Consensus::Params consensusParams 
)

Definition at line 1238 of file validation.cpp.

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◆ GetSpendHeight()

int GetSpendHeight ( const CCoinsViewCache inputs)

Return the spend height, which is one more than the inputs.GetBestBlock().

While checking, GetBestBlock() refers to the parent block. (protected by cs_main) This is also true for mempool checks.

Definition at line 1476 of file validation.cpp.

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◆ GetTransaction()

bool GetTransaction ( const uint256 hash,
CTransactionRef txOut,
const Consensus::Params consensusParams,
uint256 hashBlock,
const CBlockIndex *const  block_index 
)

Retrieve a transaction (from memory pool, or from disk, if possible)

Retrieve a transaction (from memory pool, or from disk, if possible)

If blockIndex is provided, the transaction is fetched from the corresponding block.

Definition at line 1091 of file validation.cpp.

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◆ GetWitnessCommitmentIndex()

int GetWitnessCommitmentIndex ( const CBlock block)

Compute at which vout of the block's coinbase transaction the witness commitment occurs, or -1 if not found.

Definition at line 3392 of file validation.cpp.

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◆ GUARDED_BY()

ChainstateManager g_chainman GUARDED_BY ( ::cs_main  )

DEPRECATED! Please use node.chainman instead.

May only be used in validation.cpp internally

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◆ GuessVerificationProgress()

double GuessVerificationProgress ( const ChainTxData data,
const CBlockIndex pindex 
)

Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip).

Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip).

Definition at line 5154 of file validation.cpp.

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◆ InitScriptExecutionCache()

void InitScriptExecutionCache ( )

Initializes the script-execution cache.

Definition at line 1487 of file validation.cpp.

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◆ InvalidateBlock()

bool InvalidateBlock ( BlockValidationState state,
const CChainParams chainparams,
CBlockIndex pindex 
)

Mark a block as invalid.

Definition at line 3112 of file validation.cpp.

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◆ IsBlockPruned()

bool IsBlockPruned ( const CBlockIndex pblockindex)
inline

Check whether the block associated with this index entry is pruned or not.

Definition at line 915 of file validation.h.

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◆ IsWitnessEnabled()

bool IsWitnessEnabled ( const CBlockIndex pindexPrev,
const Consensus::Params params 
)

Check whether witness commitments are required for a block, and whether to enforce NULLDUMMY (BIP 147) rules.

Note that transaction witness validation rules are always enforced when P2SH is enforced.

Definition at line 3386 of file validation.cpp.

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◆ LoadExternalBlockFile()

void LoadExternalBlockFile ( const CChainParams chainparams,
FILE *  fileIn,
FlatFilePos dbp = nullptr 
)

Import blocks from an external file.

Definition at line 4656 of file validation.cpp.

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◆ LoadGenesisBlock()

bool LoadGenesisBlock ( const CChainParams chainparams)

Ensures we have a genesis block in the block tree, possibly writing one to disk.

Definition at line 4651 of file validation.cpp.

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◆ LoadMempool()

bool LoadMempool ( CTxMemPool pool)

Load the mempool from disk.

Definition at line 5000 of file validation.cpp.

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◆ LookupBlockIndex()

CBlockIndex* LookupBlockIndex ( const uint256 hash)

Definition at line 170 of file validation.cpp.

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◆ OpenBlockFile()

FILE* OpenBlockFile ( const FlatFilePos pos,
bool  fReadOnly = false 
)

Open a block file (blk?????.dat)

Definition at line 4058 of file validation.cpp.

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◆ PreciousBlock()

bool PreciousBlock ( BlockValidationState state,
const CChainParams params,
CBlockIndex pindex 
)

Mark a block as precious and reorganize.

May not be called in a validationinterface callback.

Definition at line 2972 of file validation.cpp.

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◆ PruneBlockFilesManual()

void PruneBlockFilesManual ( int  nManualPruneHeight)

Prune block files up to a given height.

Definition at line 3967 of file validation.cpp.

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◆ ReadBlockFromDisk() [1/2]

bool ReadBlockFromDisk ( CBlock block,
const FlatFilePos pos,
const Consensus::Params consensusParams 
)

Functions for disk access for blocks.

Definition at line 1152 of file validation.cpp.

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◆ ReadBlockFromDisk() [2/2]

bool ReadBlockFromDisk ( CBlock block,
const CBlockIndex pindex,
const Consensus::Params consensusParams 
)

Definition at line 1176 of file validation.cpp.

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◆ ReadRawBlockFromDisk() [1/2]

bool ReadRawBlockFromDisk ( std::vector< uint8_t > &  block,
const FlatFilePos pos,
const CMessageHeader::MessageStartChars message_start 
)

Definition at line 1192 of file validation.cpp.

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◆ ReadRawBlockFromDisk() [2/2]

bool ReadRawBlockFromDisk ( std::vector< uint8_t > &  block,
const CBlockIndex pindex,
const CMessageHeader::MessageStartChars message_start 
)

Definition at line 1227 of file validation.cpp.

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◆ ResetBlockFailureFlags()

void ResetBlockFailureFlags ( CBlockIndex pindex)

Remove invalidity status from a block and its descendants.

Definition at line 3150 of file validation.cpp.

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◆ TestBlockValidity()

bool TestBlockValidity ( BlockValidationState state,
const CChainParams chainparams,
const CBlock block,
CBlockIndex pindexPrev,
bool  fCheckPOW = true,
bool  fCheckMerkleRoot = true 
)

Check a block is completely valid from start to finish (only works on top of our current best block)

Definition at line 3858 of file validation.cpp.

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◆ TestLockPointValidity()

bool TestLockPointValidity ( const LockPoints lp)

Test whether the LockPoints height and time are still valid on the current chain.

Definition at line 238 of file validation.cpp.

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◆ ThreadScriptCheck()

void ThreadScriptCheck ( int  worker_num)

Run an instance of the script checking thread.

Definition at line 1806 of file validation.cpp.

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◆ UndoReadFromDisk()

bool UndoReadFromDisk ( CBlockUndo blockundo,
const CBlockIndex pindex 
)

Definition at line 1622 of file validation.cpp.

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◆ UnlinkPrunedFiles()

void UnlinkPrunedFiles ( const std::set< int > &  setFilesToPrune)

Actually unlink the specified files.

Definition at line 3934 of file validation.cpp.

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◆ UnloadBlockIndex()

void UnloadBlockIndex ( )

Unload database information.

Definition at line 4585 of file validation.cpp.

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◆ UpdateCoins()

void UpdateCoins ( const CTransaction tx,
CCoinsViewCache inputs,
int  nHeight 
)

Apply the effects of this transaction on the UTXO set represented by view.

Definition at line 1464 of file validation.cpp.

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◆ UpdateUncommittedBlockStructures()

void UpdateUncommittedBlockStructures ( CBlock block,
const CBlockIndex pindexPrev,
const Consensus::Params consensusParams 
)

Update uncommitted block structures (currently: only the witness reserved value).

This is safe for submitted blocks.

Definition at line 3412 of file validation.cpp.

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◆ VersionBitsTipState()

ThresholdState VersionBitsTipState ( const Consensus::Params params,
Consensus::DeploymentPos  pos 
)

Get the BIP9 state for a given deployment at the current tip.

Definition at line 4980 of file validation.cpp.

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◆ VersionBitsTipStateSinceHeight()

int VersionBitsTipStateSinceHeight ( 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.

Definition at line 4992 of file validation.cpp.

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◆ VersionBitsTipStatistics()

BIP9Stats VersionBitsTipStatistics ( const Consensus::Params params,
Consensus::DeploymentPos  pos 
)

Get the numerical statistics for the BIP9 state for a given deployment at the current tip.

Definition at line 4986 of file validation.cpp.

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Variable Documentation

◆ cs_main

RecursiveMutex cs_main

Mutex to guard access to validation specific variables, such as reading or changing the chainstate.

This may also need to be locked when updating the transaction pool, e.g. on AcceptToMemoryPool. See CTxMemPool::cs comment for details.

The transaction pool has a separate lock to allow reading from it and the chainstate at the same time.

Definition at line 124 of file validation.cpp.

◆ DEFAULT_ANCESTOR_LIMIT

const unsigned int DEFAULT_ANCESTOR_LIMIT = 25
static

Default for -limitancestorcount, max number of in-mempool ancestors.

Definition at line 57 of file validation.h.

◆ DEFAULT_ANCESTOR_SIZE_LIMIT

const unsigned int DEFAULT_ANCESTOR_SIZE_LIMIT = 101
static

Default for -limitancestorsize, maximum kilobytes of tx + all in-mempool ancestors.

Definition at line 59 of file validation.h.

◆ DEFAULT_BANSCORE_THRESHOLD

const unsigned int DEFAULT_BANSCORE_THRESHOLD = 100
static

Definition at line 76 of file validation.h.

◆ DEFAULT_BLOCKFILTERINDEX

const char* const DEFAULT_BLOCKFILTERINDEX = "0"
static

Definition at line 75 of file validation.h.

◆ DEFAULT_CHECKBLOCKS

const signed int DEFAULT_CHECKBLOCKS = 6
static

Definition at line 85 of file validation.h.

◆ DEFAULT_CHECKLEVEL

const unsigned int DEFAULT_CHECKLEVEL = 3
static

Definition at line 86 of file validation.h.

◆ DEFAULT_CHECKPOINTS_ENABLED

const bool DEFAULT_CHECKPOINTS_ENABLED = true
static

Definition at line 73 of file validation.h.

◆ DEFAULT_DESCENDANT_LIMIT

const unsigned int DEFAULT_DESCENDANT_LIMIT = 25
static

Default for -limitdescendantcount, max number of in-mempool descendants.

Definition at line 61 of file validation.h.

◆ DEFAULT_DESCENDANT_SIZE_LIMIT

const unsigned int DEFAULT_DESCENDANT_SIZE_LIMIT = 101
static

Default for -limitdescendantsize, maximum kilobytes of in-mempool descendants.

Definition at line 63 of file validation.h.

◆ DEFAULT_FEEFILTER

const bool DEFAULT_FEEFILTER = true
static

Default for using fee filter.

Definition at line 80 of file validation.h.

◆ DEFAULT_MAX_TIP_AGE

const int64_t DEFAULT_MAX_TIP_AGE = 24 * 60 * 60
static

Definition at line 72 of file validation.h.

◆ DEFAULT_MEMPOOL_EXPIRY

const unsigned int DEFAULT_MEMPOOL_EXPIRY = 336
static

Default for -mempoolexpiry, expiration time for mempool transactions in hours.

Definition at line 65 of file validation.h.

◆ DEFAULT_MIN_RELAY_TX_FEE

const unsigned int DEFAULT_MIN_RELAY_TX_FEE = 1000
static

Default for -minrelaytxfee, minimum relay fee for transactions.

Definition at line 55 of file validation.h.

◆ DEFAULT_PERSIST_MEMPOOL

const bool DEFAULT_PERSIST_MEMPOOL = true
static

Default for -persistmempool.

Definition at line 78 of file validation.h.

◆ DEFAULT_SCRIPTCHECK_THREADS

const int DEFAULT_SCRIPTCHECK_THREADS = 0
static

-par default (number of script-checking threads, 0 = auto)

Definition at line 71 of file validation.h.

◆ DEFAULT_STOPATHEIGHT

const int DEFAULT_STOPATHEIGHT = 0
static

Default for -stopatheight.

Definition at line 82 of file validation.h.

◆ DEFAULT_TXINDEX

const bool DEFAULT_TXINDEX = false
static

Definition at line 74 of file validation.h.

◆ fCheckBlockIndex

bool fCheckBlockIndex

Definition at line 136 of file validation.cpp.

◆ fCheckpointsEnabled

bool fCheckpointsEnabled

Definition at line 137 of file validation.cpp.

◆ feeEstimator

CBlockPolicyEstimator feeEstimator

Definition at line 147 of file validation.cpp.

◆ fHavePruned

bool fHavePruned

Pruning-related variables and constants.

True if any block files have ever been pruned.

Definition at line 133 of file validation.cpp.

◆ fImporting

std::atomic_bool fImporting

◆ fPruneMode

bool fPruneMode

True if we're running in -prune mode.

Definition at line 134 of file validation.cpp.

◆ fReindex

std::atomic_bool fReindex

◆ fRequireStandard

bool fRequireStandard

Definition at line 135 of file validation.cpp.

◆ g_best_block

uint256 g_best_block

Definition at line 129 of file validation.cpp.

◆ g_best_block_cv

std::condition_variable g_best_block_cv

Definition at line 128 of file validation.cpp.

◆ g_best_block_mutex

Mutex g_best_block_mutex

Definition at line 127 of file validation.cpp.

◆ g_parallel_script_checks

bool g_parallel_script_checks

Whether there are dedicated script-checking threads running.

False indicates all script checking is done on the main threadMessageHandler thread.

Definition at line 130 of file validation.cpp.

◆ hashAssumeValid

uint256 hashAssumeValid

Block hash whose ancestors we will assume to have valid scripts without checking them.

Definition at line 142 of file validation.cpp.

◆ MAX_BLOCKFILE_SIZE

const unsigned int MAX_BLOCKFILE_SIZE = 0x8000000
static

The maximum size of a blk?????.dat file (since 0.8)

Definition at line 67 of file validation.h.

◆ MAX_SCRIPTCHECK_THREADS

const int MAX_SCRIPTCHECK_THREADS = 15
static

Maximum number of dedicated script-checking threads allowed.

Definition at line 69 of file validation.h.

◆ mempool

CTxMemPool mempool

◆ MIN_BLOCKS_TO_KEEP

const unsigned int MIN_BLOCKS_TO_KEEP = 288
static

Block files containing a block-height within MIN_BLOCKS_TO_KEEP of ChainActive().Tip() will not be pruned.

Definition at line 84 of file validation.h.

◆ MIN_DISK_SPACE_FOR_BLOCK_FILES

const uint64_t MIN_DISK_SPACE_FOR_BLOCK_FILES = 550 * 1024 * 1024
static

Definition at line 95 of file validation.h.

◆ MINIMUM_WITNESS_COMMITMENT

constexpr size_t MINIMUM_WITNESS_COMMITMENT {38}
static

Minimum size of a witness commitment structure.

Defined in BIP 141.

Definition at line 97 of file validation.h.

◆ minRelayTxFee

CFeeRate minRelayTxFee

A fee rate smaller than this is considered zero fee (for relaying, mining and transaction creation)

Definition at line 145 of file validation.cpp.

◆ nCoinCacheUsage

size_t nCoinCacheUsage

Definition at line 138 of file validation.cpp.

◆ nMaxTipAge

int64_t nMaxTipAge

If the tip is older than this (in seconds), the node is considered to be in initial block download.

Definition at line 140 of file validation.cpp.

◆ nMinimumChainWork

arith_uint256 nMinimumChainWork

Minimum work we will assume exists on some valid chain.

Definition at line 143 of file validation.cpp.

◆ nPruneTarget

uint64_t nPruneTarget

Number of MiB of block files that we're trying to stay below.

Definition at line 139 of file validation.cpp.

◆ pblocktree

std::unique_ptr<CBlockTreeDB> pblocktree

Global variable that points to the active block tree (protected by cs_main)

Definition at line 196 of file validation.cpp.

◆ pindexBestHeader

CBlockIndex* pindexBestHeader

Best header we've seen so far (used for getheaders queries' starting points).

Definition at line 126 of file validation.cpp.

◆ versionbitscache

VersionBitsCache versionbitscache