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-rw-r--r--src/init.cpp6
-rw-r--r--src/interfaces/chain.cpp4
-rw-r--r--src/interfaces/node.cpp2
-rw-r--r--src/net_processing.cpp16
-rw-r--r--src/rpc/blockchain.cpp6
-rw-r--r--src/rpc/mining.cpp2
-rw-r--r--src/validation.cpp285
-rw-r--r--src/validation.h191
8 files changed, 273 insertions, 239 deletions
diff --git a/src/init.cpp b/src/init.cpp
index 2bb270647a..f9723196b0 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -259,7 +259,7 @@ void Shutdown(InitInterfaces& interfaces)
// FlushStateToDisk generates a ChainStateFlushed callback, which we should avoid missing
if (pcoinsTip != nullptr) {
- FlushStateToDisk();
+ ::ChainstateActive().ForceFlushStateToDisk();
}
// After there are no more peers/RPC left to give us new data which may generate
@@ -275,7 +275,7 @@ void Shutdown(InitInterfaces& interfaces)
{
LOCK(cs_main);
if (pcoinsTip != nullptr) {
- FlushStateToDisk();
+ ::ChainstateActive().ForceFlushStateToDisk();
}
pcoinsTip.reset();
pcoinscatcher.reset();
@@ -1693,7 +1693,7 @@ bool AppInitMain(InitInterfaces& interfaces)
nLocalServices = ServiceFlags(nLocalServices & ~NODE_NETWORK);
if (!fReindex) {
uiInterface.InitMessage(_("Pruning blockstore..."));
- PruneAndFlush();
+ ::ChainstateActive().PruneAndFlush();
}
}
diff --git a/src/interfaces/chain.cpp b/src/interfaces/chain.cpp
index a864f21f04..161dd01ffe 100644
--- a/src/interfaces/chain.cpp
+++ b/src/interfaces/chain.cpp
@@ -334,8 +334,8 @@ public:
return ::fHavePruned;
}
bool p2pEnabled() override { return g_connman != nullptr; }
- bool isReadyToBroadcast() override { return !::fImporting && !::fReindex && !IsInitialBlockDownload(); }
- bool isInitialBlockDownload() override { return IsInitialBlockDownload(); }
+ bool isReadyToBroadcast() override { return !::fImporting && !::fReindex && !isInitialBlockDownload(); }
+ bool isInitialBlockDownload() override { return ::ChainstateActive().IsInitialBlockDownload(); }
bool shutdownRequested() override { return ShutdownRequested(); }
int64_t getAdjustedTime() override { return GetAdjustedTime(); }
void initMessage(const std::string& message) override { ::uiInterface.InitMessage(message); }
diff --git a/src/interfaces/node.cpp b/src/interfaces/node.cpp
index 618cd02ea6..15646b0ff4 100644
--- a/src/interfaces/node.cpp
+++ b/src/interfaces/node.cpp
@@ -197,7 +197,7 @@ public:
}
return GuessVerificationProgress(Params().TxData(), tip);
}
- bool isInitialBlockDownload() override { return IsInitialBlockDownload(); }
+ bool isInitialBlockDownload() override { return ::ChainstateActive().IsInitialBlockDownload(); }
bool getReindex() override { return ::fReindex; }
bool getImporting() override { return ::fImporting; }
void setNetworkActive(bool active) override
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index a3b865a69e..3d0a9b192d 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -1240,7 +1240,7 @@ void PeerLogicValidation::BlockChecked(const CBlock& block, const CValidationSta
// the tip yet so we have no way to check this directly here. Instead we
// just check that there are currently no other blocks in flight.
else if (state.IsValid() &&
- !IsInitialBlockDownload() &&
+ !::ChainstateActive().IsInitialBlockDownload() &&
mapBlocksInFlight.count(hash) == mapBlocksInFlight.size()) {
if (it != mapBlockSource.end()) {
MaybeSetPeerAsAnnouncingHeaderAndIDs(it->second.first, connman);
@@ -1728,7 +1728,7 @@ bool static ProcessHeadersMessage(CNode *pfrom, CConnman *connman, const std::ve
}
// If we're in IBD, we want outbound peers that will serve us a useful
// chain. Disconnect peers that are on chains with insufficient work.
- if (IsInitialBlockDownload() && nCount != MAX_HEADERS_RESULTS) {
+ if (::ChainstateActive().IsInitialBlockDownload() && nCount != MAX_HEADERS_RESULTS) {
// When nCount < MAX_HEADERS_RESULTS, we know we have no more
// headers to fetch from this peer.
if (nodestate->pindexBestKnownBlock && nodestate->pindexBestKnownBlock->nChainWork < nMinimumChainWork) {
@@ -1994,7 +1994,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
if (!pfrom->fInbound)
{
// Advertise our address
- if (fListen && !IsInitialBlockDownload())
+ if (fListen && !::ChainstateActive().IsInitialBlockDownload())
{
CAddress addr = GetLocalAddress(&pfrom->addr, pfrom->GetLocalServices());
FastRandomContext insecure_rand;
@@ -2229,7 +2229,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
pfrom->AddInventoryKnown(inv);
if (fBlocksOnly) {
LogPrint(BCLog::NET, "transaction (%s) inv sent in violation of protocol peer=%d\n", inv.hash.ToString(), pfrom->GetId());
- } else if (!fAlreadyHave && !fImporting && !fReindex && !IsInitialBlockDownload()) {
+ } else if (!fAlreadyHave && !fImporting && !fReindex && !::ChainstateActive().IsInitialBlockDownload()) {
RequestTx(State(pfrom->GetId()), inv.hash, nNow);
}
}
@@ -2387,7 +2387,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
}
LOCK(cs_main);
- if (IsInitialBlockDownload() && !pfrom->fWhitelisted) {
+ if (::ChainstateActive().IsInitialBlockDownload() && !pfrom->fWhitelisted) {
LogPrint(BCLog::NET, "Ignoring getheaders from peer=%d because node is in initial block download\n", pfrom->GetId());
return true;
}
@@ -2609,7 +2609,7 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
if (!LookupBlockIndex(cmpctblock.header.hashPrevBlock)) {
// Doesn't connect (or is genesis), instead of DoSing in AcceptBlockHeader, request deeper headers
- if (!IsInitialBlockDownload())
+ if (!::ChainstateActive().IsInitialBlockDownload())
connman->PushMessage(pfrom, msgMaker.Make(NetMsgType::GETHEADERS, ::ChainActive().GetLocator(pindexBestHeader), uint256()));
return true;
}
@@ -3524,7 +3524,7 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
// Address refresh broadcast
int64_t nNow = GetTimeMicros();
- if (!IsInitialBlockDownload() && pto->nNextLocalAddrSend < nNow) {
+ if (!::ChainstateActive().IsInitialBlockDownload() && pto->nNextLocalAddrSend < nNow) {
AdvertiseLocal(pto);
pto->nNextLocalAddrSend = PoissonNextSend(nNow, AVG_LOCAL_ADDRESS_BROADCAST_INTERVAL);
}
@@ -3925,7 +3925,7 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
// Message: getdata (blocks)
//
std::vector<CInv> vGetData;
- if (!pto->fClient && ((fFetch && !pto->m_limited_node) || !IsInitialBlockDownload()) && state.nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
+ if (!pto->fClient && ((fFetch && !pto->m_limited_node) || !::ChainstateActive().IsInitialBlockDownload()) && state.nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
std::vector<const CBlockIndex*> vToDownload;
NodeId staller = -1;
FindNextBlocksToDownload(pto->GetId(), MAX_BLOCKS_IN_TRANSIT_PER_PEER - state.nBlocksInFlight, vToDownload, staller, consensusParams);
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 56018caf24..d2d157e785 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -1095,7 +1095,7 @@ static UniValue gettxoutsetinfo(const JSONRPCRequest& request)
UniValue ret(UniValue::VOBJ);
CCoinsStats stats;
- FlushStateToDisk();
+ ::ChainstateActive().ForceFlushStateToDisk();
if (GetUTXOStats(pcoinsdbview.get(), stats)) {
ret.pushKV("height", (int64_t)stats.nHeight);
ret.pushKV("bestblock", stats.hashBlock.GetHex());
@@ -1360,7 +1360,7 @@ UniValue getblockchaininfo(const JSONRPCRequest& request)
obj.pushKV("difficulty", (double)GetDifficulty(tip));
obj.pushKV("mediantime", (int64_t)tip->GetMedianTimePast());
obj.pushKV("verificationprogress", GuessVerificationProgress(Params().TxData(), tip));
- obj.pushKV("initialblockdownload", IsInitialBlockDownload());
+ obj.pushKV("initialblockdownload", ::ChainstateActive().IsInitialBlockDownload());
obj.pushKV("chainwork", tip->nChainWork.GetHex());
obj.pushKV("size_on_disk", CalculateCurrentUsage());
obj.pushKV("pruned", fPruneMode);
@@ -2292,7 +2292,7 @@ UniValue scantxoutset(const JSONRPCRequest& request)
std::unique_ptr<CCoinsViewCursor> pcursor;
{
LOCK(cs_main);
- FlushStateToDisk();
+ ::ChainstateActive().ForceFlushStateToDisk();
pcursor = std::unique_ptr<CCoinsViewCursor>(pcoinsdbview->Cursor());
assert(pcursor);
}
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index 1831562100..477f05f46c 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -442,7 +442,7 @@ static UniValue getblocktemplate(const JSONRPCRequest& request)
if (g_connman->GetNodeCount(CConnman::CONNECTIONS_ALL) == 0)
throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, PACKAGE_NAME " is not connected!");
- if (IsInitialBlockDownload())
+ if (::ChainstateActive().IsInitialBlockDownload())
throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, PACKAGE_NAME " is in initial sync and waiting for blocks...");
static unsigned int nTransactionsUpdatedLast;
diff --git a/src/validation.cpp b/src/validation.cpp
index 436c62261b..6fd7964647 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -60,165 +60,27 @@
#define MICRO 0.000001
#define MILLI 0.001
-/**
- * Global state
- */
-namespace {
- struct CBlockIndexWorkComparator
- {
- bool operator()(const CBlockIndex *pa, const CBlockIndex *pb) const {
- // First sort by most total work, ...
- if (pa->nChainWork > pb->nChainWork) return false;
- if (pa->nChainWork < pb->nChainWork) return true;
-
- // ... then by earliest time received, ...
- if (pa->nSequenceId < pb->nSequenceId) return false;
- if (pa->nSequenceId > pb->nSequenceId) return true;
-
- // Use pointer address as tie breaker (should only happen with blocks
- // loaded from disk, as those all have id 0).
- if (pa < pb) return false;
- if (pa > pb) return true;
-
- // Identical blocks.
- return false;
- }
- };
-} // anon namespace
-
-enum DisconnectResult
-{
- DISCONNECT_OK, // All good.
- DISCONNECT_UNCLEAN, // Rolled back, but UTXO set was inconsistent with block.
- DISCONNECT_FAILED // Something else went wrong.
-};
-
-class ConnectTrace;
-
-/**
- * CChainState stores and provides an API to update our local knowledge of the
- * current best chain and header tree.
- *
- * It generally provides access to the current block tree, as well as functions
- * to provide new data, which it will appropriately validate and incorporate in
- * its state as necessary.
- *
- * Eventually, the API here is targeted at being exposed externally as a
- * consumable libconsensus library, so any functions added must only call
- * other class member functions, pure functions in other parts of the consensus
- * library, callbacks via the validation interface, or read/write-to-disk
- * functions (eventually this will also be via callbacks).
- */
-class CChainState {
-private:
- /**
- * The set of all CBlockIndex entries with BLOCK_VALID_TRANSACTIONS (for itself and all ancestors) and
- * as good as our current tip or better. Entries may be failed, though, and pruning nodes may be
- * missing the data for the block.
- */
- std::set<CBlockIndex*, CBlockIndexWorkComparator> setBlockIndexCandidates;
-
- /**
- * Every received block is assigned a unique and increasing identifier, so we
- * know which one to give priority in case of a fork.
- */
- CCriticalSection cs_nBlockSequenceId;
- /** Blocks loaded from disk are assigned id 0, so start the counter at 1. */
- int32_t nBlockSequenceId = 1;
- /** Decreasing counter (used by subsequent preciousblock calls). */
- int32_t nBlockReverseSequenceId = -1;
- /** chainwork for the last block that preciousblock has been applied to. */
- arith_uint256 nLastPreciousChainwork = 0;
-
- /** In order to efficiently track invalidity of headers, we keep the set of
- * blocks which we tried to connect and found to be invalid here (ie which
- * were set to BLOCK_FAILED_VALID since the last restart). We can then
- * walk this set and check if a new header is a descendant of something in
- * this set, preventing us from having to walk mapBlockIndex when we try
- * to connect a bad block and fail.
- *
- * While this is more complicated than marking everything which descends
- * from an invalid block as invalid at the time we discover it to be
- * invalid, doing so would require walking all of mapBlockIndex to find all
- * descendants. Since this case should be very rare, keeping track of all
- * BLOCK_FAILED_VALID blocks in a set should be just fine and work just as
- * well.
- *
- * Because we already walk mapBlockIndex in height-order at startup, we go
- * ahead and mark descendants of invalid blocks as FAILED_CHILD at that time,
- * instead of putting things in this set.
- */
- std::set<CBlockIndex*> m_failed_blocks;
-
- /**
- * the ChainState CriticalSection
- * A lock that must be held when modifying this ChainState - held in ActivateBestChain()
- */
- CCriticalSection m_cs_chainstate;
+bool CBlockIndexWorkComparator::operator()(const CBlockIndex *pa, const CBlockIndex *pb) const {
+ // First sort by most total work, ...
+ if (pa->nChainWork > pb->nChainWork) return false;
+ if (pa->nChainWork < pb->nChainWork) return true;
-public:
- //! The current chain of blockheaders we consult and build on.
- //! @see CChain, CBlockIndex.
- CChain m_chain;
- BlockMap mapBlockIndex GUARDED_BY(cs_main);
- std::multimap<CBlockIndex*, CBlockIndex*> mapBlocksUnlinked;
- CBlockIndex *pindexBestInvalid = nullptr;
-
- bool LoadBlockIndex(const Consensus::Params& consensus_params, CBlockTreeDB& blocktree) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
-
- bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, std::shared_ptr<const CBlock> pblock) LOCKS_EXCLUDED(cs_main);
-
- /**
- * 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) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
- bool AcceptBlock(const std::shared_ptr<const CBlock>& pblock, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex, bool fRequested, const FlatFilePos* dbp, bool* fNewBlock) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
-
- // Block (dis)connection on a given view:
- DisconnectResult DisconnectBlock(const CBlock& block, const CBlockIndex* pindex, CCoinsViewCache& view);
- bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pindex,
- CCoinsViewCache& view, const CChainParams& chainparams, bool fJustCheck = false) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ // ... then by earliest time received, ...
+ if (pa->nSequenceId < pb->nSequenceId) return false;
+ if (pa->nSequenceId > pb->nSequenceId) return true;
- // Block disconnection on our pcoinsTip:
- bool DisconnectTip(CValidationState& state, const CChainParams& chainparams, DisconnectedBlockTransactions* disconnectpool) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
-
- // Manual block validity manipulation:
- bool PreciousBlock(CValidationState& state, const CChainParams& params, CBlockIndex* pindex) LOCKS_EXCLUDED(cs_main);
- bool InvalidateBlock(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindex) LOCKS_EXCLUDED(cs_main);
- void ResetBlockFailureFlags(CBlockIndex* pindex) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
-
- bool ReplayBlocks(const CChainParams& params, CCoinsView* view);
- bool RewindBlockIndex(const CChainParams& params) LOCKS_EXCLUDED(cs_main);
- bool LoadGenesisBlock(const CChainParams& chainparams);
-
- void PruneBlockIndexCandidates();
-
- void UnloadBlockIndex();
-
-private:
- bool ActivateBestChainStep(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexMostWork, const std::shared_ptr<const CBlock>& pblock, bool& fInvalidFound, ConnectTrace& connectTrace) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
- bool ConnectTip(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexNew, const std::shared_ptr<const CBlock>& pblock, ConnectTrace& connectTrace, DisconnectedBlockTransactions &disconnectpool) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
-
- CBlockIndex* AddToBlockIndex(const CBlockHeader& block) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
- /** Create a new block index entry for a given block hash */
- CBlockIndex* InsertBlockIndex(const uint256& hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
- /**
- * 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);
+ // Use pointer address as tie breaker (should only happen with blocks
+ // loaded from disk, as those all have id 0).
+ if (pa < pb) return false;
+ if (pa > pb) return true;
- void InvalidBlockFound(CBlockIndex *pindex, const CValidationState &state) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
- CBlockIndex* FindMostWorkChain() EXCLUSIVE_LOCKS_REQUIRED(cs_main);
- void ReceivedBlockTransactions(const CBlock& block, CBlockIndex* pindexNew, const FlatFilePos& pos, const Consensus::Params& consensusParams) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ // Identical blocks.
+ return false;
+}
- bool RollforwardBlock(const CBlockIndex* pindex, CCoinsViewCache& inputs, const CChainParams& params) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+CChainState g_chainstate;
- //! Mark a block as not having block data
- void EraseBlockData(CBlockIndex* index) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
-} g_chainstate;
+CChainState& ChainstateActive() { return g_chainstate; }
CChain& ChainActive() { return g_chainstate.m_chain; }
@@ -234,7 +96,7 @@ CChain& ChainActive() { return g_chainstate.m_chain; }
*/
RecursiveMutex cs_main;
-BlockMap& mapBlockIndex = g_chainstate.mapBlockIndex;
+BlockMap& mapBlockIndex = ::ChainstateActive().mapBlockIndex;
CBlockIndex *pindexBestHeader = nullptr;
Mutex g_best_block_mutex;
std::condition_variable g_best_block_cv;
@@ -265,12 +127,12 @@ CScript COINBASE_FLAGS;
// Internal stuff
namespace {
- CBlockIndex *&pindexBestInvalid = g_chainstate.pindexBestInvalid;
+ CBlockIndex *&pindexBestInvalid = ::ChainstateActive().pindexBestInvalid;
/** All pairs A->B, where A (or one of its ancestors) misses transactions, but B has transactions.
* Pruned nodes may have entries where B is missing data.
*/
- std::multimap<CBlockIndex*, CBlockIndex*>& mapBlocksUnlinked = g_chainstate.mapBlocksUnlinked;
+ std::multimap<CBlockIndex*, CBlockIndex*>& mapBlocksUnlinked = ::ChainstateActive().mapBlocksUnlinked;
CCriticalSection cs_LastBlockFile;
std::vector<CBlockFileInfo> vinfoBlockFile;
@@ -311,15 +173,7 @@ std::unique_ptr<CCoinsViewDB> pcoinsdbview;
std::unique_ptr<CCoinsViewCache> pcoinsTip;
std::unique_ptr<CBlockTreeDB> pblocktree;
-enum class FlushStateMode {
- NONE,
- IF_NEEDED,
- PERIODIC,
- ALWAYS
-};
-
// See definition for documentation
-static bool FlushStateToDisk(const CChainParams& chainParams, CValidationState &state, FlushStateMode mode, int nManualPruneHeight=0);
static void FindFilesToPruneManual(std::set<int>& setFilesToPrune, int nManualPruneHeight);
static void FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight);
bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsViewCache &inputs, bool fScriptChecks, unsigned int flags, bool cacheSigStore, bool cacheFullScriptStore, PrecomputedTransactionData& txdata, std::vector<CScriptCheck> *pvChecks = nullptr);
@@ -467,7 +321,7 @@ static void LimitMempoolSize(CTxMemPool& pool, size_t limit, unsigned long age)
static bool IsCurrentForFeeEstimation() EXCLUSIVE_LOCKS_REQUIRED(cs_main)
{
AssertLockHeld(cs_main);
- if (IsInitialBlockDownload())
+ if (::ChainstateActive().IsInitialBlockDownload())
return false;
if (::ChainActive().Tip()->GetBlockTime() < (GetTime() - MAX_FEE_ESTIMATION_TIP_AGE))
return false;
@@ -992,7 +846,7 @@ static bool AcceptToMemoryPoolWithTime(const CChainParams& chainparams, CTxMemPo
}
// After we've (potentially) uncached entries, ensure our coins cache is still within its size limits
CValidationState stateDummy;
- FlushStateToDisk(chainparams, stateDummy, FlushStateMode::PERIODIC);
+ ::ChainstateActive().FlushStateToDisk(chainparams, stateDummy, FlushStateMode::PERIODIC);
return res;
}
@@ -1168,27 +1022,30 @@ CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams)
return nSubsidy;
}
-bool IsInitialBlockDownload()
+// Note that though this is marked const, we may end up modifying `m_cached_finished_ibd`, which
+// is a performance-related implementation detail. This function must be marked
+// `const` so that `CValidationInterface` clients (which are given a `const CChainState*`)
+// can call it.
+//
+bool CChainState::IsInitialBlockDownload() const
{
- // Once this function has returned false, it must remain false.
- static std::atomic<bool> latchToFalse{false};
// Optimization: pre-test latch before taking the lock.
- if (latchToFalse.load(std::memory_order_relaxed))
+ if (m_cached_finished_ibd.load(std::memory_order_relaxed))
return false;
LOCK(cs_main);
- if (latchToFalse.load(std::memory_order_relaxed))
+ if (m_cached_finished_ibd.load(std::memory_order_relaxed))
return false;
if (fImporting || fReindex)
return true;
- if (::ChainActive().Tip() == nullptr)
+ if (m_chain.Tip() == nullptr)
return true;
- if (::ChainActive().Tip()->nChainWork < nMinimumChainWork)
+ if (m_chain.Tip()->nChainWork < nMinimumChainWork)
return true;
- if (::ChainActive().Tip()->GetBlockTime() < (GetTime() - nMaxTipAge))
+ if (m_chain.Tip()->GetBlockTime() < (GetTime() - nMaxTipAge))
return true;
LogPrintf("Leaving InitialBlockDownload (latching to false)\n");
- latchToFalse.store(true, std::memory_order_relaxed);
+ m_cached_finished_ibd.store(true, std::memory_order_relaxed);
return false;
}
@@ -1217,7 +1074,7 @@ static void CheckForkWarningConditions() EXCLUSIVE_LOCKS_REQUIRED(cs_main)
AssertLockHeld(cs_main);
// Before we get past initial download, we cannot reliably alert about forks
// (we assume we don't get stuck on a fork before finishing our initial sync)
- if (IsInitialBlockDownload())
+ if (::ChainstateActive().IsInitialBlockDownload())
return;
// If our best fork is no longer within 72 blocks (+/- 12 hours if no one mines it)
@@ -2089,16 +1946,12 @@ bool CChainState::ConnectBlock(const CBlock& block, CValidationState& state, CBl
return true;
}
-/**
- * Update the on-disk chain state.
- * The caches and indexes are flushed depending on the mode we're called with
- * if they're too large, if it's been a while since the last write,
- * or always and in all cases if we're in prune mode and are deleting files.
- *
- * If FlushStateMode::NONE is used, then FlushStateToDisk(...) won't do anything
- * besides checking if we need to prune.
- */
-bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState &state, FlushStateMode mode, int nManualPruneHeight) {
+bool CChainState::FlushStateToDisk(
+ const CChainParams& chainparams,
+ CValidationState &state,
+ FlushStateMode mode,
+ int nManualPruneHeight)
+{
int64_t nMempoolUsage = mempool.DynamicMemoryUsage();
LOCK(cs_main);
static int64_t nLastWrite = 0;
@@ -2196,7 +2049,7 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState &
}
if (full_flush_completed) {
// Update best block in wallet (so we can detect restored wallets).
- GetMainSignals().ChainStateFlushed(::ChainActive().GetLocator());
+ GetMainSignals().ChainStateFlushed(m_chain.GetLocator());
}
} catch (const std::runtime_error& e) {
return AbortNode(state, std::string("System error while flushing: ") + e.what());
@@ -2204,19 +2057,20 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState &
return true;
}
-void FlushStateToDisk() {
+void CChainState::ForceFlushStateToDisk() {
CValidationState state;
const CChainParams& chainparams = Params();
- if (!FlushStateToDisk(chainparams, state, FlushStateMode::ALWAYS)) {
+ if (!this->FlushStateToDisk(chainparams, state, FlushStateMode::ALWAYS)) {
LogPrintf("%s: failed to flush state (%s)\n", __func__, FormatStateMessage(state));
}
}
-void PruneAndFlush() {
+void CChainState::PruneAndFlush() {
CValidationState state;
fCheckForPruning = true;
const CChainParams& chainparams = Params();
- if (!FlushStateToDisk(chainparams, state, FlushStateMode::NONE)) {
+
+ if (!this->FlushStateToDisk(chainparams, state, FlushStateMode::NONE)) {
LogPrintf("%s: failed to flush state (%s)\n", __func__, FormatStateMessage(state));
}
}
@@ -2250,7 +2104,7 @@ void static UpdateTip(const CBlockIndex *pindexNew, const CChainParams& chainPar
}
std::string warningMessages;
- if (!IsInitialBlockDownload())
+ if (!::ChainstateActive().IsInitialBlockDownload())
{
int nUpgraded = 0;
const CBlockIndex* pindex = pindexNew;
@@ -2641,7 +2495,7 @@ static void NotifyHeaderTip() LOCKS_EXCLUDED(cs_main) {
if (pindexHeader != pindexHeaderOld) {
fNotify = true;
- fInitialBlockDownload = IsInitialBlockDownload();
+ fInitialBlockDownload = ::ChainstateActive().IsInitialBlockDownload();
pindexHeaderOld = pindexHeader;
}
}
@@ -2767,7 +2621,7 @@ bool CChainState::ActivateBestChain(CValidationState &state, const CChainParams&
}
bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, std::shared_ptr<const CBlock> pblock) {
- return g_chainstate.ActivateBestChain(state, chainparams, std::move(pblock));
+ return ::ChainstateActive().ActivateBestChain(state, chainparams, std::move(pblock));
}
bool CChainState::PreciousBlock(CValidationState& state, const CChainParams& params, CBlockIndex *pindex)
@@ -2799,7 +2653,7 @@ bool CChainState::PreciousBlock(CValidationState& state, const CChainParams& par
return ActivateBestChain(state, params, std::shared_ptr<const CBlock>());
}
bool PreciousBlock(CValidationState& state, const CChainParams& params, CBlockIndex *pindex) {
- return g_chainstate.PreciousBlock(state, params, pindex);
+ return ::ChainstateActive().PreciousBlock(state, params, pindex);
}
bool CChainState::InvalidateBlock(CValidationState& state, const CChainParams& chainparams, CBlockIndex *pindex)
@@ -2888,7 +2742,7 @@ bool CChainState::InvalidateBlock(CValidationState& state, const CChainParams& c
}
bool InvalidateBlock(CValidationState& state, const CChainParams& chainparams, CBlockIndex *pindex) {
- return g_chainstate.InvalidateBlock(state, chainparams, pindex);
+ return ::ChainstateActive().InvalidateBlock(state, chainparams, pindex);
}
void CChainState::ResetBlockFailureFlags(CBlockIndex *pindex) {
@@ -2926,7 +2780,7 @@ void CChainState::ResetBlockFailureFlags(CBlockIndex *pindex) {
}
void ResetBlockFailureFlags(CBlockIndex *pindex) {
- return g_chainstate.ResetBlockFailureFlags(pindex);
+ return ::ChainstateActive().ResetBlockFailureFlags(pindex);
}
CBlockIndex* CChainState::AddToBlockIndex(const CBlockHeader& block)
@@ -3464,7 +3318,7 @@ bool ProcessNewBlockHeaders(const std::vector<CBlockHeader>& headers, CValidatio
LOCK(cs_main);
for (const CBlockHeader& header : headers) {
CBlockIndex *pindex = nullptr; // Use a temp pindex instead of ppindex to avoid a const_cast
- if (!g_chainstate.AcceptBlockHeader(header, state, chainparams, &pindex)) {
+ if (!::ChainstateActive().AcceptBlockHeader(header, state, chainparams, &pindex)) {
if (first_invalid) *first_invalid = header;
return false;
}
@@ -3595,7 +3449,7 @@ bool ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<cons
bool ret = CheckBlock(*pblock, state, chainparams.GetConsensus());
if (ret) {
// Store to disk
- ret = g_chainstate.AcceptBlock(pblock, state, chainparams, &pindex, fForceProcessing, nullptr, fNewBlock);
+ ret = ::ChainstateActive().AcceptBlock(pblock, state, chainparams, &pindex, fForceProcessing, nullptr, fNewBlock);
}
if (!ret) {
GetMainSignals().BlockChecked(*pblock, state);
@@ -3606,7 +3460,7 @@ bool ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<cons
NotifyHeaderTip();
CValidationState state; // Only used to report errors, not invalidity - ignore it
- if (!g_chainstate.ActivateBestChain(state, chainparams, pblock))
+ if (!::ChainstateActive().ActivateBestChain(state, chainparams, pblock))
return error("%s: ActivateBestChain failed (%s)", __func__, FormatStateMessage(state));
return true;
@@ -3630,7 +3484,7 @@ bool TestBlockValidity(CValidationState& state, const CChainParams& chainparams,
return error("%s: Consensus::CheckBlock: %s", __func__, FormatStateMessage(state));
if (!ContextualCheckBlock(block, state, chainparams.GetConsensus(), pindexPrev))
return error("%s: Consensus::ContextualCheckBlock: %s", __func__, FormatStateMessage(state));
- if (!g_chainstate.ConnectBlock(block, state, &indexDummy, viewNew, chainparams, true))
+ if (!::ChainstateActive().ConnectBlock(block, state, &indexDummy, viewNew, chainparams, true))
return false;
assert(state.IsValid());
@@ -3725,7 +3579,8 @@ void PruneBlockFilesManual(int nManualPruneHeight)
{
CValidationState state;
const CChainParams& chainparams = Params();
- if (!FlushStateToDisk(chainparams, state, FlushStateMode::NONE, nManualPruneHeight)) {
+ if (!::ChainstateActive().FlushStateToDisk(
+ chainparams, state, FlushStateMode::NONE, nManualPruneHeight)) {
LogPrintf("%s: failed to flush state (%s)\n", __func__, FormatStateMessage(state));
}
}
@@ -3769,7 +3624,7 @@ static void FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfte
// To avoid excessive prune events negating the benefit of high dbcache
// values, we should not prune too rapidly.
// So when pruning in IBD, increase the buffer a bit to avoid a re-prune too soon.
- if (IsInitialBlockDownload()) {
+ if (::ChainstateActive().IsInitialBlockDownload()) {
// Since this is only relevant during IBD, we use a fixed 10%
nBuffer += nPruneTarget / 10;
}
@@ -3898,7 +3753,7 @@ bool CChainState::LoadBlockIndex(const Consensus::Params& consensus_params, CBlo
bool static LoadBlockIndexDB(const CChainParams& chainparams) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
{
- if (!g_chainstate.LoadBlockIndex(chainparams.GetConsensus(), *pblocktree))
+ if (!::ChainstateActive().LoadBlockIndex(chainparams.GetConsensus(), *pblocktree))
return false;
// Load block file info
@@ -3963,7 +3818,7 @@ bool LoadChainTip(const CChainParams& chainparams)
}
::ChainActive().SetTip(pindex);
- g_chainstate.PruneBlockIndexCandidates();
+ ::ChainstateActive().PruneBlockIndexCandidates();
LogPrintf("Loaded best chain: hashBestChain=%s height=%d date=%s progress=%f\n",
::ChainActive().Tip()->GetBlockHash().ToString(), ::ChainActive().Height(),
@@ -4036,7 +3891,7 @@ bool CVerifyDB::VerifyDB(const CChainParams& chainparams, CCoinsView *coinsview,
// check level 3: check for inconsistencies during memory-only disconnect of tip blocks
if (nCheckLevel >= 3 && (coins.DynamicMemoryUsage() + pcoinsTip->DynamicMemoryUsage()) <= nCoinCacheUsage) {
assert(coins.GetBestBlock() == pindex->GetBlockHash());
- DisconnectResult res = g_chainstate.DisconnectBlock(block, pindex, coins);
+ DisconnectResult res = ::ChainstateActive().DisconnectBlock(block, pindex, coins);
if (res == DISCONNECT_FAILED) {
return error("VerifyDB(): *** irrecoverable inconsistency in block data at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString());
}
@@ -4071,7 +3926,7 @@ bool CVerifyDB::VerifyDB(const CChainParams& chainparams, CCoinsView *coinsview,
CBlock block;
if (!ReadBlockFromDisk(block, pindex, chainparams.GetConsensus()))
return error("VerifyDB(): *** ReadBlockFromDisk failed at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString());
- if (!g_chainstate.ConnectBlock(block, state, pindex, coins, chainparams))
+ if (!::ChainstateActive().ConnectBlock(block, state, pindex, coins, chainparams))
return error("VerifyDB(): *** found unconnectable block at %d, hash=%s (%s)", pindex->nHeight, pindex->GetBlockHash().ToString(), FormatStateMessage(state));
}
}
@@ -4170,7 +4025,7 @@ bool CChainState::ReplayBlocks(const CChainParams& params, CCoinsView* view)
}
bool ReplayBlocks(const CChainParams& params, CCoinsView* view) {
- return g_chainstate.ReplayBlocks(params, view);
+ return ::ChainstateActive().ReplayBlocks(params, view);
}
//! Helper for CChainState::RewindBlockIndex
@@ -4303,7 +4158,7 @@ bool CChainState::RewindBlockIndex(const CChainParams& params)
}
bool RewindBlockIndex(const CChainParams& params) {
- if (!g_chainstate.RewindBlockIndex(params)) {
+ if (!::ChainstateActive().RewindBlockIndex(params)) {
return false;
}
@@ -4313,7 +4168,7 @@ bool RewindBlockIndex(const CChainParams& params) {
// and skip it here, we're about to -reindex-chainstate anyway, so
// it'll get called a bunch real soon.
CValidationState state;
- if (!FlushStateToDisk(params, state, FlushStateMode::ALWAYS)) {
+ if (!::ChainstateActive().FlushStateToDisk(params, state, FlushStateMode::ALWAYS)) {
LogPrintf("RewindBlockIndex: unable to flush state to disk (%s)\n", FormatStateMessage(state));
return false;
}
@@ -4354,7 +4209,7 @@ void UnloadBlockIndex()
mapBlockIndex.clear();
fHavePruned = false;
- g_chainstate.UnloadBlockIndex();
+ ::ChainstateActive().UnloadBlockIndex();
}
bool LoadBlockIndex(const CChainParams& chainparams)
@@ -4406,7 +4261,7 @@ bool CChainState::LoadGenesisBlock(const CChainParams& chainparams)
bool LoadGenesisBlock(const CChainParams& chainparams)
{
- return g_chainstate.LoadGenesisBlock(chainparams);
+ return ::ChainstateActive().LoadGenesisBlock(chainparams);
}
bool LoadExternalBlockFile(const CChainParams& chainparams, FILE* fileIn, FlatFilePos *dbp)
@@ -4471,7 +4326,7 @@ bool LoadExternalBlockFile(const CChainParams& chainparams, FILE* fileIn, FlatFi
CBlockIndex* pindex = LookupBlockIndex(hash);
if (!pindex || (pindex->nStatus & BLOCK_HAVE_DATA) == 0) {
CValidationState state;
- if (g_chainstate.AcceptBlock(pblock, state, chainparams, nullptr, true, dbp, nullptr)) {
+ if (::ChainstateActive().AcceptBlock(pblock, state, chainparams, nullptr, true, dbp, nullptr)) {
nLoaded++;
}
if (state.IsError()) {
@@ -4508,7 +4363,7 @@ bool LoadExternalBlockFile(const CChainParams& chainparams, FILE* fileIn, FlatFi
head.ToString());
LOCK(cs_main);
CValidationState dummy;
- if (g_chainstate.AcceptBlock(pblockrecursive, dummy, chainparams, nullptr, true, &it->second, nullptr))
+ if (::ChainstateActive().AcceptBlock(pblockrecursive, dummy, chainparams, nullptr, true, &it->second, nullptr))
{
nLoaded++;
queue.push_back(pblockrecursive->GetHash());
diff --git a/src/validation.h b/src/validation.h
index ad978f0e05..963439d35b 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -31,6 +31,7 @@
#include <utility>
#include <vector>
+class CChainState;
class CBlockIndex;
class CBlockTreeDB;
class CBlockUndo;
@@ -44,6 +45,7 @@ class CTxMemPool;
class CValidationState;
struct ChainTxData;
+struct DisconnectedBlockTransactions;
struct PrecomputedTransactionData;
struct LockPoints;
@@ -247,8 +249,6 @@ bool LoadChainTip(const CChainParams& chainparams) EXCLUSIVE_LOCKS_REQUIRED(cs_m
void UnloadBlockIndex();
/** Run an instance of the script checking thread */
void ThreadScriptCheck(int worker_num);
-/** Check whether we are doing an initial block download (synchronizing from disk or network) */
-bool IsInitialBlockDownload();
/** Retrieve a transaction (from memory pool, or from disk, if possible) */
bool GetTransaction(const uint256& hash, CTransactionRef& tx, const Consensus::Params& params, uint256& hashBlock, const CBlockIndex* const blockIndex = nullptr);
/**
@@ -276,10 +276,6 @@ void PruneOneBlockFile(const int fileNumber) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
*/
void UnlinkPrunedFiles(const std::set<int>& setFilesToPrune);
-/** Flush all state, indexes and buffers to disk. */
-void FlushStateToDisk();
-/** Prune block files and flush state to disk. */
-void PruneAndFlush();
/** Prune block files up to a given height */
void PruneBlockFilesManual(int nManualPruneHeight);
@@ -422,6 +418,186 @@ inline CBlockIndex* LookupBlockIndex(const uint256& hash) EXCLUSIVE_LOCKS_REQUIR
/** Find the last common block between the parameter chain and a locator. */
CBlockIndex* FindForkInGlobalIndex(const CChain& chain, const CBlockLocator& locator) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+enum DisconnectResult
+{
+ DISCONNECT_OK, // All good.
+ DISCONNECT_UNCLEAN, // Rolled back, but UTXO set was inconsistent with block.
+ DISCONNECT_FAILED // Something else went wrong.
+};
+
+class ConnectTrace;
+
+/** @see CChainState::FlushStateToDisk */
+enum class FlushStateMode {
+ NONE,
+ IF_NEEDED,
+ PERIODIC,
+ ALWAYS
+};
+
+struct CBlockIndexWorkComparator
+{
+ bool operator()(const CBlockIndex *pa, const CBlockIndex *pb) const;
+};
+
+/**
+ * CChainState stores and provides an API to update our local knowledge of the
+ * current best chain and header tree.
+ *
+ * It generally provides access to the current block tree, as well as functions
+ * to provide new data, which it will appropriately validate and incorporate in
+ * its state as necessary.
+ *
+ * Eventually, the API here is targeted at being exposed externally as a
+ * consumable libconsensus library, so any functions added must only call
+ * other class member functions, pure functions in other parts of the consensus
+ * library, callbacks via the validation interface, or read/write-to-disk
+ * functions (eventually this will also be via callbacks).
+ */
+class CChainState {
+private:
+ /**
+ * The set of all CBlockIndex entries with BLOCK_VALID_TRANSACTIONS (for itself and all ancestors) and
+ * as good as our current tip or better. Entries may be failed, though, and pruning nodes may be
+ * missing the data for the block.
+ */
+ std::set<CBlockIndex*, CBlockIndexWorkComparator> setBlockIndexCandidates;
+
+ /**
+ * Every received block is assigned a unique and increasing identifier, so we
+ * know which one to give priority in case of a fork.
+ */
+ CCriticalSection cs_nBlockSequenceId;
+ /** Blocks loaded from disk are assigned id 0, so start the counter at 1. */
+ int32_t nBlockSequenceId = 1;
+ /** Decreasing counter (used by subsequent preciousblock calls). */
+ int32_t nBlockReverseSequenceId = -1;
+ /** chainwork for the last block that preciousblock has been applied to. */
+ arith_uint256 nLastPreciousChainwork = 0;
+
+ /** In order to efficiently track invalidity of headers, we keep the set of
+ * blocks which we tried to connect and found to be invalid here (ie which
+ * were set to BLOCK_FAILED_VALID since the last restart). We can then
+ * walk this set and check if a new header is a descendant of something in
+ * this set, preventing us from having to walk mapBlockIndex when we try
+ * to connect a bad block and fail.
+ *
+ * While this is more complicated than marking everything which descends
+ * from an invalid block as invalid at the time we discover it to be
+ * invalid, doing so would require walking all of mapBlockIndex to find all
+ * descendants. Since this case should be very rare, keeping track of all
+ * BLOCK_FAILED_VALID blocks in a set should be just fine and work just as
+ * well.
+ *
+ * Because we already walk mapBlockIndex in height-order at startup, we go
+ * ahead and mark descendants of invalid blocks as FAILED_CHILD at that time,
+ * instead of putting things in this set.
+ */
+ std::set<CBlockIndex*> m_failed_blocks;
+
+ /**
+ * the ChainState CriticalSection
+ * A lock that must be held when modifying this ChainState - held in ActivateBestChain()
+ */
+ CCriticalSection m_cs_chainstate;
+
+ /**
+ * Whether this chainstate is undergoing initial block download.
+ *
+ * Mutable because we need to be able to mark IsInitialBlockDownload()
+ * const, which latches this for caching purposes.
+ */
+ mutable std::atomic<bool> m_cached_finished_ibd{false};
+
+public:
+ //! The current chain of blockheaders we consult and build on.
+ //! @see CChain, CBlockIndex.
+ CChain m_chain;
+ BlockMap mapBlockIndex GUARDED_BY(cs_main);
+ std::multimap<CBlockIndex*, CBlockIndex*> mapBlocksUnlinked;
+ CBlockIndex *pindexBestInvalid = nullptr;
+
+ bool LoadBlockIndex(const Consensus::Params& consensus_params, CBlockTreeDB& blocktree) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ /**
+ * Update the on-disk chain state.
+ * The caches and indexes are flushed depending on the mode we're called with
+ * if they're too large, if it's been a while since the last write,
+ * or always and in all cases if we're in prune mode and are deleting files.
+ *
+ * If FlushStateMode::NONE is used, then FlushStateToDisk(...) won't do anything
+ * besides checking if we need to prune.
+ */
+ bool FlushStateToDisk(
+ const CChainParams& chainparams,
+ CValidationState &state,
+ FlushStateMode mode,
+ int nManualPruneHeight = 0);
+
+ //! Unconditionally flush all changes to disk.
+ void ForceFlushStateToDisk();
+
+ //! Prune blockfiles from the disk if necessary and then flush chainstate changes
+ //! if we pruned.
+ void PruneAndFlush();
+
+ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, std::shared_ptr<const CBlock> pblock) LOCKS_EXCLUDED(cs_main);
+
+ /**
+ * 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) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ bool AcceptBlock(const std::shared_ptr<const CBlock>& pblock, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex, bool fRequested, const FlatFilePos* dbp, bool* fNewBlock) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ // Block (dis)connection on a given view:
+ DisconnectResult DisconnectBlock(const CBlock& block, const CBlockIndex* pindex, CCoinsViewCache& view);
+ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pindex,
+ CCoinsViewCache& view, const CChainParams& chainparams, bool fJustCheck = false) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ // Block disconnection on our pcoinsTip:
+ bool DisconnectTip(CValidationState& state, const CChainParams& chainparams, DisconnectedBlockTransactions* disconnectpool) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ // Manual block validity manipulation:
+ bool PreciousBlock(CValidationState& state, const CChainParams& params, CBlockIndex* pindex) LOCKS_EXCLUDED(cs_main);
+ bool InvalidateBlock(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindex) LOCKS_EXCLUDED(cs_main);
+ void ResetBlockFailureFlags(CBlockIndex* pindex) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ bool ReplayBlocks(const CChainParams& params, CCoinsView* view);
+ bool RewindBlockIndex(const CChainParams& params) LOCKS_EXCLUDED(cs_main);
+ bool LoadGenesisBlock(const CChainParams& chainparams);
+
+ void PruneBlockIndexCandidates();
+
+ void UnloadBlockIndex();
+
+ /** Check whether we are doing an initial block download (synchronizing from disk or network) */
+ bool IsInitialBlockDownload() const;
+
+private:
+ bool ActivateBestChainStep(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexMostWork, const std::shared_ptr<const CBlock>& pblock, bool& fInvalidFound, ConnectTrace& connectTrace) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ bool ConnectTip(CValidationState& state, const CChainParams& chainparams, CBlockIndex* pindexNew, const std::shared_ptr<const CBlock>& pblock, ConnectTrace& connectTrace, DisconnectedBlockTransactions &disconnectpool) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ CBlockIndex* AddToBlockIndex(const CBlockHeader& block) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ /** Create a new block index entry for a given block hash */
+ CBlockIndex* InsertBlockIndex(const uint256& hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ /**
+ * 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) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ CBlockIndex* FindMostWorkChain() EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+ void ReceivedBlockTransactions(const CBlock& block, CBlockIndex* pindexNew, const FlatFilePos& pos, const Consensus::Params& consensusParams) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ bool RollforwardBlock(const CBlockIndex* pindex, CCoinsViewCache& inputs, const CChainParams& params) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
+ //! Mark a block as not having block data
+ void EraseBlockData(CBlockIndex* index) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+};
+
/** Mark a block as precious and reorganize.
*
* May not be called in a
@@ -435,6 +611,9 @@ bool InvalidateBlock(CValidationState& state, const CChainParams& chainparams, C
/** Remove invalidity status from a block and its descendants. */
void ResetBlockFailureFlags(CBlockIndex* pindex) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+/** @returns the most-work valid chainstate. */
+CChainState& ChainstateActive();
+
/** @returns the most-work chain. */
CChain& ChainActive();