mirror of
https://github.com/dashpay/dash.git
synced 2024-12-27 21:12:48 +01:00
23fe35a18a
509cb00 txdb: Add Cursor() method to CCoinsView to iterate over UTXO set (Wladimir J. van der Laan)
111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
|
// Copyright (c) 2009-2015 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_TXDB_H
|
|
#define BITCOIN_TXDB_H
|
|
|
|
#include "coins.h"
|
|
#include "dbwrapper.h"
|
|
|
|
#include <map>
|
|
#include <string>
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
class CBlockFileInfo;
|
|
class CBlockIndex;
|
|
struct CDiskTxPos;
|
|
struct CAddressUnspentKey;
|
|
struct CAddressUnspentValue;
|
|
struct CAddressIndexKey;
|
|
struct CAddressIndexIteratorKey;
|
|
struct CAddressIndexIteratorHeightKey;
|
|
struct CTimestampIndexKey;
|
|
struct CTimestampIndexIteratorKey;
|
|
struct CSpentIndexKey;
|
|
struct CSpentIndexValue;
|
|
class uint256;
|
|
|
|
//! -dbcache default (MiB)
|
|
static const int64_t nDefaultDbCache = 100;
|
|
//! max. -dbcache in (MiB)
|
|
static const int64_t nMaxDbCache = sizeof(void*) > 4 ? 16384 : 1024;
|
|
//! min. -dbcache in (MiB)
|
|
static const int64_t nMinDbCache = 4;
|
|
|
|
class CCoinsViewDBCursor;
|
|
|
|
/** CCoinsView backed by the coin database (chainstate/) */
|
|
class CCoinsViewDB : public CCoinsView
|
|
{
|
|
protected:
|
|
CDBWrapper db;
|
|
public:
|
|
CCoinsViewDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
|
|
|
|
bool GetCoins(const uint256 &txid, CCoins &coins) const;
|
|
bool HaveCoins(const uint256 &txid) const;
|
|
uint256 GetBestBlock() const;
|
|
bool BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock);
|
|
CCoinsViewCursor *Cursor() const;
|
|
};
|
|
|
|
/** Specialization of CCoinsViewCursor to iterate over a CCoinsViewDB */
|
|
class CCoinsViewDBCursor: public CCoinsViewCursor
|
|
{
|
|
public:
|
|
~CCoinsViewDBCursor() {}
|
|
|
|
bool GetKey(uint256 &key) const;
|
|
bool GetValue(CCoins &coins) const;
|
|
unsigned int GetValueSize() const;
|
|
|
|
bool Valid() const;
|
|
void Next();
|
|
|
|
private:
|
|
CCoinsViewDBCursor(CDBIterator* pcursorIn, const uint256 &hashBlockIn):
|
|
CCoinsViewCursor(hashBlockIn), pcursor(pcursorIn) {}
|
|
boost::scoped_ptr<CDBIterator> pcursor;
|
|
std::pair<char, uint256> keyTmp;
|
|
|
|
friend class CCoinsViewDB;
|
|
};
|
|
|
|
/** Access to the block database (blocks/index/) */
|
|
class CBlockTreeDB : public CDBWrapper
|
|
{
|
|
public:
|
|
CBlockTreeDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
|
|
private:
|
|
CBlockTreeDB(const CBlockTreeDB&);
|
|
void operator=(const CBlockTreeDB&);
|
|
public:
|
|
bool WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo);
|
|
bool ReadBlockFileInfo(int nFile, CBlockFileInfo &fileinfo);
|
|
bool ReadLastBlockFile(int &nFile);
|
|
bool WriteReindexing(bool fReindex);
|
|
bool ReadReindexing(bool &fReindex);
|
|
bool ReadTxIndex(const uint256 &txid, CDiskTxPos &pos);
|
|
bool WriteTxIndex(const std::vector<std::pair<uint256, CDiskTxPos> > &list);
|
|
bool ReadSpentIndex(CSpentIndexKey &key, CSpentIndexValue &value);
|
|
bool UpdateSpentIndex(const std::vector<std::pair<CSpentIndexKey, CSpentIndexValue> >&vect);
|
|
bool UpdateAddressUnspentIndex(const std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue > >&vect);
|
|
bool ReadAddressUnspentIndex(uint160 addressHash, int type,
|
|
std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > &vect);
|
|
bool WriteAddressIndex(const std::vector<std::pair<CAddressIndexKey, CAmount> > &vect);
|
|
bool EraseAddressIndex(const std::vector<std::pair<CAddressIndexKey, CAmount> > &vect);
|
|
bool ReadAddressIndex(uint160 addressHash, int type,
|
|
std::vector<std::pair<CAddressIndexKey, CAmount> > &addressIndex,
|
|
int start = 0, int end = 0);
|
|
bool WriteTimestampIndex(const CTimestampIndexKey ×tampIndex);
|
|
bool ReadTimestampIndex(const unsigned int &high, const unsigned int &low, std::vector<uint256> &vect);
|
|
bool WriteFlag(const std::string &name, bool fValue);
|
|
bool ReadFlag(const std::string &name, bool &fValue);
|
|
bool LoadBlockIndexGuts();
|
|
};
|
|
|
|
#endif // BITCOIN_TXDB_H
|