static const unsigned int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
static const unsigned int MAX_ORPHAN_TRANSACTIONS = MAX_BLOCK_SIZE/100;
static const unsigned int MAX_INV_SZ = 50000;
+
+static const unsigned int MAX_BLOCKFILE_SIZE = 0x8000000; // 128 MiB
+static const unsigned int BLOCKFILE_CHUNK_SIZE = 0x1000000; // 16 MiB
+static const unsigned int UNDOFILE_CHUNK_SIZE = 0x100000; // 1 MiB
+static const unsigned int MEMPOOL_HEIGHT = 0x7FFFFFFF;
+
static const int64 MIN_TX_FEE = CENT;
static const int64 MIN_RELAY_TX_FEE = CENT;
static const int64 MAX_MONEY = 2000000000 * COIN;
static const uint64 nMinDiskSpace = 52428800;
class CReserveKey;
-class CTxDB;
-class CTxIndex;
+class CCoinsDB;
+class CChainDB;
class CDiskBlockPos;
+class CCoins;
+class CTxUndo;
+class CCoinsView;
void RegisterWallet(CWallet* pwalletIn);
void UnregisterWallet(CWallet* pwalletIn);
void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fUpdate = false, bool fConnect = true);
bool ProcessBlock(CNode* pfrom, CBlock* pblock);
bool CheckDiskSpace(uint64 nAdditionalBytes=0);
-FILE* OpenBlockFile(const CDiskBlockPos &pos, const char* pszMode="rb");
+FILE* OpenBlockFile(const CDiskBlockPos &pos, bool fReadOnly = false);
+FILE* OpenUndoFile(const CDiskBlockPos &pos, bool fReadOnly = false);
bool LoadBlockIndex(bool fAllowNew=true);
void PrintBlockTree();
CBlockIndex* FindBlockByHeight(int nHeight);
int GetNumBlocksOfPeers();
bool IsInitialBlockDownload();
std::string GetWarnings(std::string strFor);
-bool GetTransaction(const uint256 &hash, CTransaction &tx, uint256 &hashBlock);
+bool GetTransaction(const uint256 &hash, CTransaction &tx, uint256 &hashBlock, bool fAllowSlow);
uint256 WantedByOrphan(const CBlock* pblockOrphan);
const CBlockIndex* GetLastBlockIndex(const CBlockIndex* pindex, bool fProofOfStake);
void StakeMiner(CWallet *pwallet);
class CDiskBlockPos
{
public:
- int nHeight;
- int nAlternative;
-
- CDiskBlockPos() {
- SetNull();
- }
-
- CDiskBlockPos(int nHeightIn, int nAlternativeIn = 0) {
- nHeight = nHeightIn;
- nAlternative = nAlternativeIn;
- }
-
- std::string GetAlternative() const {
- char c[9]={0,0,0,0,0,0,0,0,0};
- char *cp = &c[8];
- unsigned int n = nAlternative;
- while (n > 0 && cp>c) {
- n--;
- *(--cp) = 'a' + (n % 26);
- n /= 26;
- }
- return std::string(cp);
- }
-
- boost::filesystem::path GetDirectory(const boost::filesystem::path &base) const {
- assert(nHeight != -1);
- return base / strprintf("era%02u", nHeight / 210000) /
- strprintf("cycle%04u", nHeight / 2016);
- }
-
- boost::filesystem::path GetFileName(const boost::filesystem::path &base) const {
- return GetDirectory(base) / strprintf("%08u%s.blk", nHeight, GetAlternative().c_str());
- }
-
- boost::filesystem::path GetUndoFile(const boost::filesystem::path &base) const {
- return GetDirectory(base) / strprintf("%08u%s.und", nHeight, GetAlternative().c_str());
- }
-
- // TODO: make thread-safe (lockfile, atomic file creation, ...?)
- void MakeUnique(const boost::filesystem::path &base) {
- while (boost::filesystem::exists(GetFileName(base)))
- nAlternative++;
- }
-
- IMPLEMENT_SERIALIZE(({
- CDiskBlockPos *me = const_cast<CDiskBlockPos*>(this);
- if (!fRead) {
- unsigned int nCode = (nHeight + 1) * 2 + (nAlternative > 0);
- READWRITE(VARINT(nCode));
- if (nAlternative > 0) {
- unsigned int nAlt = nAlternative - 1;
- READWRITE(VARINT(nAlt));
- }
- } else {
- unsigned int nCode = 0;
- READWRITE(VARINT(nCode));
- me->nHeight = (nCode / 2) - 1;
- if (nCode & 1) {
- unsigned int nAlt = 0;
- READWRITE(VARINT(nAlt));
- me->nAlternative = 1 + nAlt;
- } else {
- me->nAlternative = 0;
- }
- }
- });)
-
- friend bool operator==(const CDiskBlockPos &a, const CDiskBlockPos &b) {
- return ((a.nHeight == b.nHeight) && (a.nAlternative == b.nAlternative));
- }
-
- friend bool operator!=(const CDiskBlockPos &a, const CDiskBlockPos &b) {
- return !(a == b);
- }
-
- void SetNull() { nHeight = -1; nAlternative = 0; }
- bool IsNull() const { return ((nHeight == -1) && (nAlternative == 0)); }
-
- void SetMemPool() { nHeight = -1; nAlternative = -1; }
- bool IsMemPool() const { return ((nHeight == -1) && (nAlternative == -1)); }
-};
-
-
-/** Position on disk for a particular transaction. */
-class CDiskTxPos
-{
-public:
- CDiskBlockPos blockPos;
- unsigned int nTxPos;
-
- CDiskTxPos(bool fInMemPool = false)
- {
- SetNull();
- if (fInMemPool)
- blockPos.SetMemPool();
-
- }
-
- CDiskTxPos(const CDiskBlockPos &block, unsigned int nTxPosIn) : blockPos(block), nTxPos(nTxPosIn) { }
+ int nFile;
+ unsigned int nPos;
IMPLEMENT_SERIALIZE(
- READWRITE(blockPos);
- READWRITE(VARINT(nTxPos));
+ READWRITE(VARINT(nFile));
+ READWRITE(VARINT(nPos));
)
- void SetNull() { blockPos.SetNull(); nTxPos = 0; }
- bool IsNull() const { return blockPos.IsNull(); }
- bool IsMemPool() const { return blockPos.IsMemPool(); }
-
- friend bool operator==(const CDiskTxPos& a, const CDiskTxPos& b)
- {
- return (a.blockPos == b.blockPos &&
- a.nTxPos == b.nTxPos);
+ friend bool operator==(const CDiskBlockPos &a, const CDiskBlockPos &b) {
+ return (a.nFile == b.nFile && a.nPos == b.nPos);
}
- friend bool operator!=(const CDiskTxPos& a, const CDiskTxPos& b)
- {
+ friend bool operator!=(const CDiskBlockPos &a, const CDiskBlockPos &b) {
return !(a == b);
}
-
- std::string ToString() const
- {
- if (IsNull())
- return "null";
- else if (blockPos.IsMemPool())
- return "mempool";
- else
- return strprintf("(%s, nTxPos=%u)", blockPos.GetFileName("").string().c_str(), nTxPos);
- }
-
- void print() const
- {
- printf("%s", ToString().c_str());
- }
+ void SetNull() { nFile = -1; nPos = 0; }
+ bool IsNull() const { return (nFile == -1); }
};
-
/** An inpoint - a combination of a transaction and an index n into its vin */
class CInPoint
{
std::string ToStringShort() const
{
- return strprintf(" out %s %s", FormatMoney(nValue).c_str(), scriptPubKey.ToString(true).c_str());
+ return strprintf(" out %s %s", FormatMoney(nValue).c_str(), scriptPubKey.ToString().substr(0, 10).c_str());
}
std::string ToString() const
GMF_SEND,
};
-typedef std::map<uint256, std::pair<CTxIndex, CTransaction> > MapPrevTx;
+// Modes for script/signature checking
+enum CheckSig_mode
+{
+ CS_NEVER, // never validate scripts
+ CS_AFTER_CHECKPOINT, // validate scripts after the last checkpoint
+ CS_ALWAYS // always validate scripts
+};
/** The basic transaction that is broadcasted on the network and contained in
* blocks. A transaction can contain multiple inputs and outputs.
@return True if all inputs (scriptSigs) use only standard transaction forms
@see CTransaction::FetchInputs
*/
- bool AreInputsStandard(const MapPrevTx& mapInputs) const;
+ bool AreInputsStandard(CCoinsView& mapInputs) const;
/** Count ECDSA signature operations the old-fashioned (pre-0.6) way
@return number of sigops this transaction's outputs will produce when spent
@return maximum number of sigops required to validate this transaction's inputs
@see CTransaction::FetchInputs
*/
- unsigned int GetP2SHSigOpCount(const MapPrevTx& mapInputs) const;
+ unsigned int GetP2SHSigOpCount(CCoinsView& mapInputs) const;
/** Amount of bitcoins spent by this transaction.
@return sum of all outputs (note: does not include fees)
@return Sum of value of all inputs (scriptSigs)
@see CTransaction::FetchInputs
*/
- int64 GetValueIn(const MapPrevTx& mapInputs) const;
+ int64 GetValueIn(CCoinsView& mapInputs) const;
static bool AllowFree(double dPriority)
{
int64 GetMinFee(unsigned int nBlockSize=1, bool fAllowFree=false, enum GetMinFee_mode mode=GMF_BLOCK, unsigned int nBytes = 0) const;
- bool ReadFromDisk(CDiskTxPos pos, FILE** pfileRet=NULL)
- {
- CAutoFile filein = CAutoFile(OpenBlockFile(pos.blockPos, pfileRet ? "rb+" : "rb"), SER_DISK, CLIENT_VERSION);
- if (!filein)
- return error("CTransaction::ReadFromDisk() : OpenBlockFile failed");
-
- // Read transaction
- if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
- return error("CTransaction::ReadFromDisk() : fseek failed");
-
- try {
- filein >> *this;
- }
- catch (std::exception &e) {
- return error("%s() : deserialize or I/O error", __PRETTY_FUNCTION__);
- }
-
- // Return file pointer
- if (pfileRet)
- {
- if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
- return error("CTransaction::ReadFromDisk() : second fseek failed");
- *pfileRet = filein.release();
- }
- return true;
- }
-
friend bool operator==(const CTransaction& a, const CTransaction& b)
{
return (a.nVersion == b.nVersion &&
}
- bool ReadFromDisk(CTxDB& txdb, COutPoint prevout, CTxIndex& txindexRet);
- bool ReadFromDisk(CTxDB& txdb, COutPoint prevout);
- bool ReadFromDisk(COutPoint prevout);
- bool DisconnectInputs(CTxDB& txdb);
+ // Do all possible client-mode checks
+ bool ClientCheckInputs() const;
- /** Fetch from memory and/or disk. inputsRet keys are transaction hashes.
+ // Check whether all prevouts of this transaction are present in the UTXO set represented by view
+ bool HaveInputs(CCoinsView &view) const;
- @param[in] txdb Transaction database
- @param[in] mapTestPool List of pending changes to the transaction index database
- @param[in] fBlock True if being called to add a new best-block to the chain
- @param[in] fMiner True if being called by CreateNewBlock
- @param[out] inputsRet Pointers to this transaction's inputs
- @param[out] fInvalid returns true if transaction is invalid
- @return Returns true if all inputs are in txdb or mapTestPool
- */
- bool FetchInputs(CTxDB& txdb, const std::map<uint256, CTxIndex>& mapTestPool,
- bool fBlock, bool fMiner, MapPrevTx& inputsRet, bool& fInvalid);
-
- /** Sanity check previous transactions, then, if all checks succeed,
- mark them as spent by this transaction.
-
- @param[in] inputs Previous transactions (from FetchInputs)
- @param[out] mapTestPool Keeps track of inputs that need to be updated on disk
- @param[in] posThisTx Position of this transaction on disk
- @param[in] pindexBlock
- @param[in] fBlock true if called from ConnectBlock
- @param[in] fMiner true if called from CreateNewBlock
- @param[in] fStrictPayToScriptHash true if fully validating p2sh transactions
- @return Returns true if all checks succeed
- */
- bool ConnectInputs(CTxDB& txdb, MapPrevTx inputs,
- std::map<uint256, CTxIndex>& mapTestPool, const CDiskTxPos& posThisTx,
- const CBlockIndex* pindexBlock, bool fBlock, bool fMiner, bool fStrictPayToScriptHash=true);
- bool ClientConnectInputs();
+ // Check whether all inputs of this transaction are valid (no double spends, scripts & sigs, amounts)
+ // This does not modify the UTXO set
+ bool CheckInputs(CCoinsView &view, enum CheckSig_mode csmode, bool fStrictPayToScriptHash=true, bool fStrictEncodings=true, CBlock *pblock=NULL) const;
+
+ // Apply the effects of this transaction on the UTXO set represented by view
+ bool UpdateCoins(CCoinsView &view, CTxUndo &txundo, int nHeight, unsigned int nBlockTime) const;
+
+ // Context-independent validity checks
bool CheckTransaction() const;
- bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL);
- bool GetCoinAge(CTxDB& txdb, uint64& nCoinAge) const; // ppcoin: get transaction coin age
+ // Try to accept this transaction into the memory pool
+ bool AcceptToMemoryPool(bool fCheckInputs=true, bool* pfMissingInputs=NULL);
+ bool GetCoinAge(uint64& nCoinAge) const; // Get transaction coin age
protected:
- const CTxOut& GetOutputFor(const CTxIn& input, const MapPrevTx& inputs) const;
+ static CTxOut GetOutputFor(const CTxIn& input, CCoinsView& mapInputs);
};
class CTxInUndo
{
public:
- CTxOut txout; // the txout data before being spent
- bool fCoinBase; // if the outpoint was the last unspent: whether it belonged to a coinbase
- unsigned int nHeight; // if the outpoint was the last unspent: its height
- int nVersion; // if the outpoint was the last unspent: its version
+ CTxOut txout; // the txout data before being spent
+ bool fCoinBase; // if the outpoint was the last unspent: whether it belonged to a coinbase
+ bool fCoinStake; // if the outpoint was the last unspent: whether it belonged to a coinstake
+ unsigned int nHeight; // if the outpoint was the last unspent: its height
+ int nVersion; // if the outpoint was the last unspent: its version
+ unsigned int nTime; // if the outpoint was the last unspent: its timestamp
+ unsigned int nBlockTime; // if the outpoint was the last unspent: its block timestamp
- CTxInUndo() : txout(), fCoinBase(false), nHeight(0), nVersion(0) {}
- CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, unsigned int nHeightIn = 0, int nVersionIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), nHeight(nHeightIn), nVersion(nVersionIn) { }
+ CTxInUndo() : txout(), fCoinBase(false), fCoinStake(false), nHeight(0), nVersion(0), nTime(0), nBlockTime(0) {}
+ CTxInUndo(const CTxOut &txoutIn, bool fCoinBaseIn = false, bool fCoinStakeIn = false, unsigned int nHeightIn = 0, int nVersionIn = 0, int nTimeIn = 0, int nBlockTimeIn = 0) : txout(txoutIn), fCoinBase(fCoinBaseIn), fCoinStake(fCoinStakeIn), nHeight(nHeightIn), nVersion(nVersionIn), nTime(nTimeIn), nBlockTime(nBlockTimeIn) { }
unsigned int GetSerializeSize(int nType, int nVersion) const {
return ::GetSerializeSize(VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion) +
+ ::GetSerializeSize(VARINT(nTime*2+(fCoinStake ? 1 : 0)), nType, nVersion) +
+ ::GetSerializeSize(VARINT(nBlockTime), nType, nVersion) +
(nHeight > 0 ? ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion) : 0) +
::GetSerializeSize(CTxOutCompressor(REF(txout)), nType, nVersion);
}
template<typename Stream>
void Serialize(Stream &s, int nType, int nVersion) const {
::Serialize(s, VARINT(nHeight*2+(fCoinBase ? 1 : 0)), nType, nVersion);
+ ::Serialize(s, VARINT(nTime*2+(fCoinStake ? 1 : 0)), nType, nVersion);
+ ::Serialize(s, VARINT(nBlockTime), nType, nVersion);
if (nHeight > 0)
::Serialize(s, VARINT(this->nVersion), nType, nVersion);
::Serialize(s, CTxOutCompressor(REF(txout)), nType, nVersion);
template<typename Stream>
void Unserialize(Stream &s, int nType, int nVersion) {
- unsigned int nCode = 0;
- ::Unserialize(s, VARINT(nCode), nType, nVersion);
- nHeight = nCode / 2;
- fCoinBase = nCode & 1;
+ unsigned int nCodeHeight = 0, nCodeTime = 0;
+ ::Unserialize(s, VARINT(nCodeHeight), nType, nVersion);
+ nHeight = nCodeHeight / 2;
+ fCoinBase = nCodeHeight & 1;
+ ::Unserialize(s, VARINT(nCodeTime), nType, nVersion);
+ nTime = nCodeTime / 2;
+ fCoinStake = nCodeTime & 1;
+ ::Unserialize(s, VARINT(nBlockTime), nType, nVersion);
if (nHeight > 0)
::Unserialize(s, VARINT(this->nVersion), nType, nVersion);
::Unserialize(s, REF(CTxOutCompressor(REF(txout))), nType, nVersion);
class CTxUndo
{
public:
+ // undo information for all txins
std::vector<CTxInUndo> vprevout;
IMPLEMENT_SERIALIZE(
class CBlockUndo
{
public:
- std::vector<CTxUndo> vtxundo;
+ std::vector<CTxUndo> vtxundo; // for all but the coinbase
IMPLEMENT_SERIALIZE(
READWRITE(vtxundo);
)
+
+ bool WriteToDisk(CDiskBlockPos &pos)
+ {
+ // Open history file to append
+ CAutoFile fileout = CAutoFile(OpenUndoFile(pos), SER_DISK, CLIENT_VERSION);
+ if (!fileout)
+ return error("CBlockUndo::WriteToDisk() : OpenUndoFile failed");
+
+ // Write index header
+ unsigned int nSize = fileout.GetSerializeSize(*this);
+ fileout << FLATDATA(pchMessageStart) << nSize;
+
+ // Write undo data
+ long fileOutPos = ftell(fileout);
+ if (fileOutPos < 0)
+ return error("CBlockUndo::WriteToDisk() : ftell failed");
+ pos.nPos = (unsigned int)fileOutPos;
+ fileout << *this;
+
+ // Flush stdio buffers and commit to disk before returning
+ fflush(fileout);
+ if (!IsInitialBlockDownload())
+ FileCommit(fileout);
+
+ return true;
+ }
+
};
/** pruned version of CTransaction: only retains metadata and unspent transaction outputs
* - unspentness bitvector, for vout[2] and further; least significant byte first
* - the non-spent CTxOuts (via CTxOutCompressor)
* - VARINT(nHeight)
+ * - VARINT(nTime + is_coinstake)
+ * - VARINT(nBlockTime)
*
* The nCode value consists of:
* - bit 1: IsCoinBase()
* - In case both bit 2 and bit 4 are unset, they encode N-1, as there must be at
* least one non-spent output).
*
- * Example: 0104835800816115944e077fe7c803cfa57f29b36bf87c1d358bb85e
- * <><><--------------------------------------------><---->
- * | \ | /
- * version code vout[1] height
+ * Example: 0104835800816115944e077fe7c803cfa57f29b36bf87c1d358bb85e40f1d75240f1d752
+ * <><><--------------------------------------------><----><------><------>
+ * | \ | / / /
+ * version code vout[1] height timestamp block timestamp
*
* - version = 1
* - code = 4 (vout[1] is not spent, and 0 non-zero bytes of bitvector follow)
* * 00: special txout type pay-to-pubkey-hash
* * 816115944e077fe7c803cfa57f29b36bf87c1d35: address uint160
* - height = 203998
+ * - time = 1389883712
+ * - is_coinstake = 0
+ * - block time = 1389883712
*
*
- * Example: 0109044086ef97d5790061b01caab50f1b8e9c50a5057eb43c2d9563a4eebbd123008c988f1a4a4de2161e0f50aac7f17e7f9555caa486af3b
- * <><><--><--------------------------------------------------><----------------------------------------------><---->
- * / \ \ | | /
- * version code unspentness vout[4] vout[16] height
+ * Example: 0109044086ef97d5790061b01caab50f1b8e9c50a5057eb43c2d9563a4eebbd123008c988f1a4a4de2161e0f50aac7f17e7f9555caa486af3b40f1d75240f1d752
+ * <><><--><--------------------------------------------------><----------------------------------------------><----><------><------>
+ * / \ \ | | / / /
+ * version code unspentness vout[4] vout[16] height timestamp block timestamp
*
* - version = 1
* - code = 9 (coinbase, neither vout[0] or vout[1] are unspent,
* * 00: special txout type pay-to-pubkey-hash
* * 8c988f1a4a4de2161e0f50aac7f17e7f9555caa4: address uint160
* - height = 120891
+ * - time = 1389883712
+ * - is_coinstake = 0
+ * - block time = 1389883712
*/
class CCoins
{
// whether transaction is a coinbase
bool fCoinBase;
+ // whether transaction is a coinstake
+ bool fCoinStake;
+
// unspent transaction outputs; spent outputs are .IsNull(); spent outputs at the end of the array are dropped
std::vector<CTxOut> vout;
// as new tx version will probably only be introduced at certain heights
int nVersion;
- // construct a CCoins from a CTransaction, at a given height
- CCoins(const CTransaction &tx, int nHeightIn) : fCoinBase(tx.IsCoinBase()), vout(tx.vout), nHeight(nHeightIn), nVersion(tx.nVersion) { }
+ // transaction timestamp + coinstake flag
+ unsigned int nTime;
+
+ // block timestamp
+ unsigned int nBlockTime;
+
+ // construct a CCoins from a CTransaction, at a given height/timestamp
+ CCoins(const CTransaction &tx, int nHeightIn, int nBlockTimeIn) : fCoinBase(tx.IsCoinBase()), fCoinStake(tx.IsCoinStake()), vout(tx.vout), nHeight(nHeightIn), nVersion(tx.nVersion), nTime(tx.nTime), nBlockTime(nBlockTimeIn) { }
// empty constructor
- CCoins() : fCoinBase(false), vout(0), nHeight(0), nVersion(0) { }
+ CCoins() : fCoinBase(false), fCoinStake(false), vout(0), nHeight(0), nVersion(0), nTime(0), nBlockTime(0) { }
// remove spent outputs at the end of vout
void Cleanup() {
// equality test
friend bool operator==(const CCoins &a, const CCoins &b) {
- return a.fCoinBase == b.fCoinBase &&
+ return a.fCoinBase == b.fCoinBase &&
+ a.fCoinStake == b.fCoinStake &&
a.nHeight == b.nHeight &&
a.nVersion == b.nVersion &&
+ a.nTime == b.nTime &&
+ a.nBlockTime == b.nBlockTime &&
a.vout == b.vout;
}
friend bool operator!=(const CCoins &a, const CCoins &b) {
return fCoinBase;
}
+ bool IsCoinStake() const {
+ return fCoinStake;
+ }
+
unsigned int GetSerializeSize(int nType, int nVersion) const {
unsigned int nSize = 0;
unsigned int nMaskSize = 0, nMaskCode = 0;
bool fFirst = vout.size() > 0 && !vout[0].IsNull();
bool fSecond = vout.size() > 1 && !vout[1].IsNull();
assert(fFirst || fSecond || nMaskCode);
- unsigned int nCode = 8*(nMaskCode - (fFirst || fSecond ? 0 : 1)) + (fCoinBase ? 1 : 0) + (fFirst ? 2 : 0) + (fSecond ? 4 : 0);
+ unsigned int nCode = 8*(nMaskCode - (fFirst || fSecond ? 0 : 1)) + (fCoinBase ? 1 : 0) + (fFirst ? 2 : 0) + (fCoinStake ? 1 : 0) + (fSecond ? 4 : 0);
// version
nSize += ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion);
// size of header code
nSize += ::GetSerializeSize(CTxOutCompressor(REF(vout[i])), nType, nVersion);
// height
nSize += ::GetSerializeSize(VARINT(nHeight), nType, nVersion);
+ // timestamp and coinstake flag
+ nSize += ::GetSerializeSize(VARINT(nTime*2+(fCoinStake ? 1 : 0)), nType, nVersion);
+ // block timestamp
+ nSize += ::GetSerializeSize(VARINT(nBlockTime), nType, nVersion);
return nSize;
}
}
// coinbase height
::Serialize(s, VARINT(nHeight), nType, nVersion);
+ // transaction timestamp and coinstake flag
+ ::Serialize(s, VARINT(nTime*2+(fCoinStake ? 1 : 0)), nType, nVersion);
+ // block time
+ ::Serialize(s, VARINT(nBlockTime), nType, nVersion);
}
template<typename Stream>
void Unserialize(Stream &s, int nType, int nVersion) {
- unsigned int nCode = 0;
+ unsigned int nCode = 0, nCodeTime = 0;
// version
::Unserialize(s, VARINT(this->nVersion), nType, nVersion);
// header code
}
// coinbase height
::Unserialize(s, VARINT(nHeight), nType, nVersion);
+ // transaction timestamp
+ ::Unserialize(s, VARINT(nCodeTime), nType, nVersion);
+ nTime = nCodeTime / 2;
+ fCoinStake = nCodeTime & 1;
+ // block timestamp
+ ::Unserialize(s, VARINT(nBlockTime), nType, nVersion);
Cleanup();
}
Cleanup();
if (vout.size() == 0) {
undo.nHeight = nHeight;
+ undo.nTime = nTime;
+ undo.nBlockTime = nBlockTime;
undo.fCoinBase = fCoinBase;
+ undo.fCoinStake = fCoinStake;
undo.nVersion = this->nVersion;
}
return true;
int GetDepthInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet); }
bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
int GetBlocksToMaturity() const;
- bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true);
- bool AcceptToMemoryPool();
+ bool AcceptToMemoryPool(bool fCheckInputs=true);
};
-
-/** A txdb record that contains the disk location of a transaction and the
- * locations of transactions that spend its outputs. vSpent is really only
- * used as a flag, but having the location is very helpful for debugging.
- */
-class CTxIndex
-{
-public:
- CDiskTxPos pos;
- std::vector<CDiskTxPos> vSpent;
-
- CTxIndex()
- {
- SetNull();
- }
-
- CTxIndex(const CDiskTxPos& posIn, unsigned int nOutputs)
- {
- pos = posIn;
- vSpent.resize(nOutputs);
- }
-
- IMPLEMENT_SERIALIZE
- (
- if (!(nType & SER_GETHASH))
- READWRITE(nVersion);
- READWRITE(pos);
- READWRITE(vSpent);
- )
-
- void SetNull()
- {
- pos.SetNull();
- vSpent.clear();
- }
-
- bool IsNull()
- {
- return pos.IsNull();
- }
-
- friend bool operator==(const CTxIndex& a, const CTxIndex& b)
- {
- return (a.pos == b.pos &&
- a.vSpent == b.vSpent);
- }
-
- friend bool operator!=(const CTxIndex& a, const CTxIndex& b)
- {
- return !(a == b);
- }
- int GetDepthInMainChain() const;
-
-};
-
-
-
-
-
/** Nodes collect new transactions into a block, hash them into a hash tree,
* and scan through nonce values to make the block's hash satisfy proof-of-work
* requirements. When they solve the proof-of-work, they broadcast the block
* to everyone and the block is added to the block chain. The first transaction
* in the block is a special one that creates a new coin owned by the creator
* of the block.
- *
- * Blocks are appended to blk0001.dat files on disk. Their location on disk
- * is indexed by CBlockIndex objects in memory.
*/
class CBlock
{
return hash;
}
-
bool WriteToDisk(CDiskBlockPos &pos)
{
// Open history file to append
- pos.MakeUnique(GetDataDir());
- CAutoFile fileout = CAutoFile(OpenBlockFile(pos, "ab"), SER_DISK, CLIENT_VERSION);
+ CAutoFile fileout = CAutoFile(OpenBlockFile(pos), SER_DISK, CLIENT_VERSION);
if (!fileout)
- return error("CBlock::WriteToDisk() : AppendBlockFile failed");
+ return error("CBlock::WriteToDisk() : OpenBlockFile failed");
+
+ // Write index header
+ unsigned int nSize = fileout.GetSerializeSize(*this);
+ fileout << FLATDATA(pchMessageStart) << nSize;
// Write block
+ long fileOutPos = ftell(fileout);
+ if (fileOutPos < 0)
+ return error("CBlock::WriteToDisk() : ftell failed");
+ pos.nPos = (unsigned int)fileOutPos;
fileout << *this;
// Flush stdio buffers and commit to disk before returning
fflush(fileout);
- if (!IsInitialBlockDownload() || (nBestHeight+1) % 500 == 0)
+ if (!IsInitialBlockDownload())
FileCommit(fileout);
return true;
SetNull();
// Open history file to read
- CAutoFile filein = CAutoFile(OpenBlockFile(pos, "rb"), SER_DISK, CLIENT_VERSION);
+ CAutoFile filein = CAutoFile(OpenBlockFile(pos, true), SER_DISK, CLIENT_VERSION);
if (!filein)
return error("CBlock::ReadFromDisk() : OpenBlockFile failed");
if (!fReadTransactions)
return true;
}
-
-
void print() const
{
printf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%"PRIszu", vchBlockSig=%s)\n",
printf("\n");
}
+ // Undo the effects of this block (with given index) on the UTXO set represented by coins
+ bool DisconnectBlock(CBlockIndex *pindex, CCoinsView &coins);
- bool DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex);
- bool ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck=false);
+ // Apply the effects of this block (with given index) on the UTXO set represented by coins
+ bool ConnectBlock(CBlockIndex *pindex, CCoinsView &coins, bool fJustCheck=false);
+
+ // Read a block from disk
bool ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions=true);
- bool SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew);
+
+ // Make this block (with given index) the new tip of the active block chain
+ bool SetBestChain(CBlockIndex* pindexNew);
+
+ // Add this block to the block index, and if necessary, switch the active block chain to this
bool AddToBlockIndex(const CDiskBlockPos &pos);
- bool CheckBlock(bool fCheckPOW=true, bool fCheckMerkleRoot=true, bool fCheckSig=true) const;
+
+ // Context-independent validity checks
+ bool CheckBlock(bool fCheckPOW=true, bool fCheckMerkleRoot=true, bool fCheckSig=false) const;
+
+ // Store block on disk
bool AcceptBlock();
- bool GetCoinAge(uint64& nCoinAge) const; // ppcoin: calculate total coin age spent in block
+
+ // Get total coinage consumed
+ bool GetCoinAge(uint64& nCoinAge) const;
+
+ // Generate proof-of-stake block signature
bool SignBlock(CWallet& keystore);
- bool CheckBlockSignature(bool fProofOfStake) const;
-private:
- bool SetBestChainInner(CTxDB& txdb, CBlockIndex *pindexNew);
+ // Get generator key
+ bool GetGenerator(CKey& GeneratorKey) const;
+
+ // Validate proof-of-stake block signature
+ bool CheckSignature(bool& fFatal, uint256& hashProofOfStake) const;
+
+ // Legacy proof-of-work signature
+ bool CheckLegacySignature() const;
};
+class CBlockFileInfo
+{
+public:
+ unsigned int nBlocks; // number of blocks stored in file
+ unsigned int nSize; // number of used bytes of block file
+ unsigned int nUndoSize; // number of used bytes in the undo file
+ unsigned int nHeightFirst; // lowest height of block in file
+ unsigned int nHeightLast; // highest height of block in file
+ uint64 nTimeFirst; // earliest time of block in file
+ uint64 nTimeLast; // latest time of block in file
+ IMPLEMENT_SERIALIZE(
+ READWRITE(VARINT(nBlocks));
+ READWRITE(VARINT(nSize));
+ READWRITE(VARINT(nUndoSize));
+ READWRITE(VARINT(nHeightFirst));
+ READWRITE(VARINT(nHeightLast));
+ READWRITE(VARINT(nTimeFirst));
+ READWRITE(VARINT(nTimeLast));
+ )
+
+ void SetNull() {
+ nBlocks = 0;
+ nSize = 0;
+ nUndoSize = 0;
+ nHeightFirst = 0;
+ nHeightLast = 0;
+ nTimeFirst = 0;
+ nTimeLast = 0;
+ }
+
+ CBlockFileInfo() {
+ SetNull();
+ }
+
+ std::string ToString() const {
+ return strprintf("CBlockFileInfo(blocks=%u, size=%u, heights=%u..%u, time=%s..%s)", nBlocks, nSize, nHeightFirst, nHeightLast, DateTimeStrFormat("%Y-%m-%d", nTimeFirst).c_str(), DateTimeStrFormat("%Y-%m-%d", nTimeLast).c_str());
+ }
+
+ // update statistics (does not update nSize)
+ void AddBlock(unsigned int nHeightIn, uint64 nTimeIn) {
+ if (nBlocks==0 || nHeightFirst > nHeightIn)
+ nHeightFirst = nHeightIn;
+ if (nBlocks==0 || nTimeFirst > nTimeIn)
+ nTimeFirst = nTimeIn;
+ nBlocks++;
+ if (nHeightIn > nHeightFirst)
+ nHeightLast = nHeightIn;
+ if (nTimeIn > nTimeLast)
+ nTimeLast = nTimeIn;
+ }
+};
+extern CCriticalSection cs_LastBlockFile;
+extern CBlockFileInfo infoLastBlockFile;
+extern int nLastBlockFile;
/** The block chain is a tree shaped structure starting with the
* genesis block at the root, with each block potentially having multiple
const uint256* phashBlock;
CBlockIndex* pprev;
CBlockIndex* pnext;
- uint256 nChainTrust; // ppcoin: trust score of block chain
int nHeight;
- unsigned int nAlternative;
+ CDiskBlockPos pos;
+ unsigned int nUndoPos;
+ uint256 nChainTrust; // trust score of block chain
int64 nMint;
int64 nMoneySupply;
unsigned int nBits;
unsigned int nNonce;
+
CBlockIndex()
{
phashBlock = NULL;
pprev = NULL;
pnext = NULL;
nHeight = 0;
+ pos.SetNull();
+ nUndoPos = 0;
nChainTrust = 0;
nMint = 0;
nMoneySupply = 0;
hashProofOfStake = 0;
prevoutStake.SetNull();
nStakeTime = 0;
- nAlternative = 0;
nVersion = 0;
hashMerkleRoot = 0;
pprev = NULL;
pnext = NULL;
nHeight = 0;
+ pos.SetNull();
+ nUndoPos = 0;
nChainTrust = 0;
nMint = 0;
nMoneySupply = 0;
prevoutStake.SetNull();
nStakeTime = 0;
}
- nAlternative = 0;
nVersion = block.nVersion;
hashMerkleRoot = block.hashMerkleRoot;
}
CDiskBlockPos GetBlockPos() const {
- return CDiskBlockPos(nHeight, nAlternative);
+ return pos;
+ }
+
+ CDiskBlockPos GetUndoPos() const {
+ CDiskBlockPos ret = pos;
+ if (nUndoPos == 0)
+ ret.SetNull();
+ else
+ ret.nPos = nUndoPos - 1;
+ return ret;
}
CBlock GetBlockHeader() const
static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart,
unsigned int nRequired, unsigned int nToCheck);
-
bool IsProofOfWork() const
{
return !(nFlags & BLOCK_PROOF_OF_STAKE);
GetBlockHash().ToString().c_str());
}
+
void print() const
{
printf("%s\n", ToString().c_str());
}
};
-
-
/** Used to marshal pointers into hashes for db storage. */
class CDiskBlockIndex : public CBlockIndex
{
private:
uint256 blockHash;
-
public:
uint256 hashPrev;
- uint256 hashNext;
- CDiskBlockIndex()
- {
+ CDiskBlockIndex() {
hashPrev = 0;
- hashNext = 0;
blockHash = 0;
}
- explicit CDiskBlockIndex(CBlockIndex* pindex) : CBlockIndex(*pindex)
- {
+ explicit CDiskBlockIndex(CBlockIndex* pindex) : CBlockIndex(*pindex) {
hashPrev = (pprev ? pprev->GetBlockHash() : 0);
- hashNext = (pnext ? pnext->GetBlockHash() : 0);
}
IMPLEMENT_SERIALIZE
if (!(nType & SER_GETHASH))
READWRITE(nVersion);
- READWRITE(hashNext);
READWRITE(nHeight);
- READWRITE(nAlternative);
+ READWRITE(pos);
+ READWRITE(nUndoPos);
READWRITE(nMint);
READWRITE(nMoneySupply);
READWRITE(nFlags);
const_cast<CDiskBlockIndex*>(this)->nStakeTime = 0;
const_cast<CDiskBlockIndex*>(this)->hashProofOfStake = 0;
}
+ READWRITE(blockHash);
// block header
READWRITE(this->nVersion);
READWRITE(nTime);
READWRITE(nBits);
READWRITE(nNonce);
- READWRITE(blockHash);
)
uint256 GetBlockHash() const
return blockHash;
}
+
std::string ToString() const
{
std::string str = "CDiskBlockIndex(";
str += CBlockIndex::ToString();
- str += strprintf("\n hashBlock=%s, hashPrev=%s, hashNext=%s)",
+ str += strprintf("\n hashBlock=%s, hashPrev=%s)",
GetBlockHash().ToString().c_str(),
- hashPrev.ToString().c_str(),
- hashNext.ToString().c_str());
+ hashPrev.ToString().substr(0,20).c_str());
return str;
}
};
-
-
-
-
-
-
/** Describes a place in the block chain to another node such that if the
* other node doesn't have the same branch, it can find a recent common trunk.
* The further back it is, the further before the fork it may be.
-
-
-
class CTxMemPool
{
public:
std::map<uint256, CTransaction> mapTx;
std::map<COutPoint, CInPoint> mapNextTx;
- bool accept(CTxDB& txdb, CTransaction &tx,
- bool fCheckInputs, bool* pfMissingInputs);
+ bool accept(CTransaction &tx, bool fCheckInputs, bool* pfMissingInputs);
bool addUnchecked(const uint256& hash, CTransaction &tx);
bool remove(CTransaction &tx);
void clear();
void queryHashes(std::vector<uint256>& vtxid);
+ void pruneSpent(const uint256& hash, CCoins &coins);
unsigned long size()
{
extern CTxMemPool mempool;
+/** Abstract view on the open txout dataset. */
+class CCoinsView
+{
+public:
+ // Retrieve the CCoins (unspent transaction outputs) for a given txid
+ virtual bool GetCoins(uint256 txid, CCoins &coins);
+
+ // Modify the CCoins for a given txid
+ virtual bool SetCoins(uint256 txid, const CCoins &coins);
+
+ // Just check whether we have data for a given txid.
+ // This may (but cannot always) return true for fully spent transactions
+ virtual bool HaveCoins(uint256 txid);
+
+ // Retrieve the block index whose state this CCoinsView currently represents
+ virtual CBlockIndex *GetBestBlock();
+
+ // Modify the currently active block index
+ virtual bool SetBestBlock(CBlockIndex *pindex);
+ virtual bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
+};
+
+/** CCoinsView backed by another CCoinsView */
+class CCoinsViewBacked : public CCoinsView
+{
+protected:
+ CCoinsView *base;
+
+public:
+ CCoinsViewBacked(CCoinsView &viewIn);
+ bool GetCoins(uint256 txid, CCoins &coins);
+ bool SetCoins(uint256 txid, const CCoins &coins);
+ bool HaveCoins(uint256 txid);
+ CBlockIndex *GetBestBlock();
+ bool SetBestBlock(CBlockIndex *pindex);
+ void SetBackend(CCoinsView &viewIn);
+ bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
+};
+
+/** CCoinsView that adds a memory cache for transactions to another CCoinsView */
+class CCoinsViewCache : public CCoinsViewBacked
+{
+protected:
+ CBlockIndex *pindexTip;
+ std::map<uint256,CCoins> cacheCoins;
+
+public:
+ CCoinsViewCache(CCoinsView &baseIn, bool fDummy = false);
+ bool GetCoins(uint256 txid, CCoins &coins);
+ bool SetCoins(uint256 txid, const CCoins &coins);
+ bool HaveCoins(uint256 txid);
+ CBlockIndex *GetBestBlock();
+ bool SetBestBlock(CBlockIndex *pindex);
+ bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
+ bool Flush();
+ unsigned int GetCacheSize();
+};
+
+/** CCoinsView that brings transactions from a memorypool into view.
+ It does not check for spendings by memory pool transactions. */
+class CCoinsViewMemPool : public CCoinsViewBacked
+{
+protected:
+ CTxMemPool &mempool;
+
+public:
+ CCoinsViewMemPool(CCoinsView &baseIn, CTxMemPool &mempoolIn);
+ bool GetCoins(uint256 txid, CCoins &coins);
+ bool HaveCoins(uint256 txid);
+};
+
+extern CCoinsViewCache *pcoinsTip;
+
#endif
git://git.novaco.in / novacoin.git / blobdiff