155 lines
3.5 KiB
C++
155 lines
3.5 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2016 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_PRIMITIVES_BLOCK_H
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#define BITCOIN_PRIMITIVES_BLOCK_H
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#include "primitives/transaction.h"
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#include "serialize.h"
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#include "uint256.h"
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/** Nodes collect new transactions into a block, hash them into a hash tree,
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* and scan through nonce values to make the block's hash satisfy proof-of-work
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* requirements. When they solve the proof-of-work, they broadcast the block
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* to everyone and the block is added to the block chain. The first transaction
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* in the block is a special one that creates a new coin owned by the creator
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* of the block.
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*/
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class CBlockHeader
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{
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public:
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// header
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int32_t nVersion;
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uint256 hashPrevBlock;
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uint256 hashMerkleRoot;
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uint32_t nTime;
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uint32_t nBits;
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uint32_t nNonce;
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CBlockHeader()
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{
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SetNull();
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}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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READWRITE(this->nVersion);
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READWRITE(hashPrevBlock);
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READWRITE(hashMerkleRoot);
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READWRITE(nTime);
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READWRITE(nBits);
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READWRITE(nNonce);
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}
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void SetNull()
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{
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nVersion = 0;
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hashPrevBlock.SetNull();
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hashMerkleRoot.SetNull();
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nTime = 0;
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nBits = 0;
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nNonce = 0;
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}
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bool IsNull() const
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{
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return (nBits == 0);
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}
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uint256 GetHash() const;
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int64_t GetBlockTime() const
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{
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return (int64_t)nTime;
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}
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};
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class CBlock : public CBlockHeader
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{
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public:
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// network and disk
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std::vector<CTransactionRef> vtx;
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// memory only
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mutable bool fChecked;
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CBlock()
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{
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SetNull();
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}
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CBlock(const CBlockHeader &header)
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{
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SetNull();
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*((CBlockHeader*)this) = header;
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}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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READWRITE(*(CBlockHeader*)this);
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READWRITE(vtx);
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}
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void SetNull()
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{
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CBlockHeader::SetNull();
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vtx.clear();
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fChecked = false;
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}
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CBlockHeader GetBlockHeader() const
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{
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CBlockHeader block;
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block.nVersion = nVersion;
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block.hashPrevBlock = hashPrevBlock;
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block.hashMerkleRoot = hashMerkleRoot;
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block.nTime = nTime;
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block.nBits = nBits;
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block.nNonce = nNonce;
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return block;
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}
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std::string ToString() const;
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};
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/** Describes a place in the block chain to another node such that if the
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* other node doesn't have the same branch, it can find a recent common trunk.
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* The further back it is, the further before the fork it may be.
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*/
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struct CBlockLocator
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{
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std::vector<uint256> vHave;
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CBlockLocator() {}
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explicit CBlockLocator(const std::vector<uint256>& vHaveIn) : vHave(vHaveIn) {}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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int nVersion = s.GetVersion();
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if (!(s.GetType() & SER_GETHASH))
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READWRITE(nVersion);
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READWRITE(vHave);
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}
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void SetNull()
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{
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vHave.clear();
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}
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bool IsNull() const
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{
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return vHave.empty();
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}
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};
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#endif // BITCOIN_PRIMITIVES_BLOCK_H
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