diff options
Diffstat (limited to 'src/coins.h')
-rw-r--r-- | src/coins.h | 68 |
1 files changed, 21 insertions, 47 deletions
diff --git a/src/coins.h b/src/coins.h index 033651a435..065bae56e9 100644 --- a/src/coins.h +++ b/src/coins.h @@ -1,11 +1,12 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto -// Copyright (c) 2009-2015 The Bitcoin Core developers +// Copyright (c) 2009-2016 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #ifndef BITCOIN_COINS_H #define BITCOIN_COINS_H +#include "primitives/transaction.h" #include "compressor.h" #include "core_memusage.h" #include "hash.h" @@ -17,7 +18,7 @@ #include <stdint.h> #include <boost/foreach.hpp> -#include <boost/unordered_map.hpp> +#include <unordered_map> /** * Pruned version of CTransaction: only retains metadata and unspent transaction outputs @@ -153,31 +154,8 @@ public: return fCoinBase; } - unsigned int GetSerializeSize(int nType, int nVersion) const { - unsigned int nSize = 0; - unsigned int nMaskSize = 0, nMaskCode = 0; - CalcMaskSize(nMaskSize, nMaskCode); - 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); - // version - nSize += ::GetSerializeSize(VARINT(this->nVersion), nType, nVersion); - // size of header code - nSize += ::GetSerializeSize(VARINT(nCode), nType, nVersion); - // spentness bitmask - nSize += nMaskSize; - // txouts themself - for (unsigned int i = 0; i < vout.size(); i++) - if (!vout[i].IsNull()) - nSize += ::GetSerializeSize(CTxOutCompressor(REF(vout[i])), nType, nVersion); - // height - nSize += ::GetSerializeSize(VARINT(nHeight), nType, nVersion); - return nSize; - } - template<typename Stream> - void Serialize(Stream &s, int nType, int nVersion) const { + void Serialize(Stream &s) const { unsigned int nMaskSize = 0, nMaskCode = 0; CalcMaskSize(nMaskSize, nMaskCode); bool fFirst = vout.size() > 0 && !vout[0].IsNull(); @@ -185,33 +163,33 @@ public: assert(fFirst || fSecond || nMaskCode); unsigned int nCode = 8*(nMaskCode - (fFirst || fSecond ? 0 : 1)) + (fCoinBase ? 1 : 0) + (fFirst ? 2 : 0) + (fSecond ? 4 : 0); // version - ::Serialize(s, VARINT(this->nVersion), nType, nVersion); + ::Serialize(s, VARINT(this->nVersion)); // header code - ::Serialize(s, VARINT(nCode), nType, nVersion); + ::Serialize(s, VARINT(nCode)); // spentness bitmask for (unsigned int b = 0; b<nMaskSize; b++) { unsigned char chAvail = 0; for (unsigned int i = 0; i < 8 && 2+b*8+i < vout.size(); i++) if (!vout[2+b*8+i].IsNull()) chAvail |= (1 << i); - ::Serialize(s, chAvail, nType, nVersion); + ::Serialize(s, chAvail); } // txouts themself for (unsigned int i = 0; i < vout.size(); i++) { if (!vout[i].IsNull()) - ::Serialize(s, CTxOutCompressor(REF(vout[i])), nType, nVersion); + ::Serialize(s, CTxOutCompressor(REF(vout[i]))); } // coinbase height - ::Serialize(s, VARINT(nHeight), nType, nVersion); + ::Serialize(s, VARINT(nHeight)); } template<typename Stream> - void Unserialize(Stream &s, int nType, int nVersion) { + void Unserialize(Stream &s) { unsigned int nCode = 0; // version - ::Unserialize(s, VARINT(this->nVersion), nType, nVersion); + ::Unserialize(s, VARINT(this->nVersion)); // header code - ::Unserialize(s, VARINT(nCode), nType, nVersion); + ::Unserialize(s, VARINT(nCode)); fCoinBase = nCode & 1; std::vector<bool> vAvail(2, false); vAvail[0] = (nCode & 2) != 0; @@ -220,7 +198,7 @@ public: // spentness bitmask while (nMaskCode > 0) { unsigned char chAvail = 0; - ::Unserialize(s, chAvail, nType, nVersion); + ::Unserialize(s, chAvail); for (unsigned int p = 0; p < 8; p++) { bool f = (chAvail & (1 << p)) != 0; vAvail.push_back(f); @@ -232,10 +210,10 @@ public: vout.assign(vAvail.size(), CTxOut()); for (unsigned int i = 0; i < vAvail.size(); i++) { if (vAvail[i]) - ::Unserialize(s, REF(CTxOutCompressor(vout[i])), nType, nVersion); + ::Unserialize(s, REF(CTxOutCompressor(vout[i]))); } // coinbase height - ::Unserialize(s, VARINT(nHeight), nType, nVersion); + ::Unserialize(s, VARINT(nHeight)); Cleanup(); } @@ -292,12 +270,17 @@ struct CCoinsCacheEntry enum Flags { DIRTY = (1 << 0), // This cache entry is potentially different from the version in the parent view. FRESH = (1 << 1), // The parent view does not have this entry (or it is pruned). + /* Note that FRESH is a performance optimization with which we can + * erase coins that are fully spent if we know we do not need to + * flush the changes to the parent cache. It is always safe to + * not mark FRESH if that condition is not guaranteed. + */ }; CCoinsCacheEntry() : coins(), flags(0) {} }; -typedef boost::unordered_map<uint256, CCoinsCacheEntry, SaltedTxidHasher> CCoinsMap; +typedef std::unordered_map<uint256, CCoinsCacheEntry, SaltedTxidHasher> CCoinsMap; /** Cursor for iterating over CoinsView state */ class CCoinsViewCursor @@ -308,7 +291,6 @@ public: virtual bool GetKey(uint256 &key) const = 0; virtual bool GetValue(CCoins &coins) const = 0; - /* Don't care about GetKeySize here */ virtual unsigned int GetValueSize() const = 0; virtual bool Valid() const = 0; @@ -478,19 +460,11 @@ public: //! Check whether all prevouts of the transaction are present in the UTXO set represented by this view bool HaveInputs(const CTransaction& tx) const; - /** - * Return priority of tx at height nHeight. Also calculate the sum of the values of the inputs - * that are already in the chain. These are the inputs that will age and increase priority as - * new blocks are added to the chain. - */ - double GetPriority(const CTransaction &tx, int nHeight, CAmount &inChainInputValue) const; - const CTxOut &GetOutputFor(const CTxIn& input) const; friend class CCoinsModifier; private: - CCoinsMap::iterator FetchCoins(const uint256 &txid); CCoinsMap::const_iterator FetchCoins(const uint256 &txid) const; /** |