a3310b4d48
Remove the mistaken assumption that GetKey returning false signifies an internal database issue. It will return false when the key cannot be deserialized into the (char,uint256) stanza, which indicates that the cursor has reached a different kind of key. Fixes bug #7890 introduced in #7756.
218 lines
7.1 KiB
C++
218 lines
7.1 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.
|
|
|
|
#include "txdb.h"
|
|
|
|
#include "chain.h"
|
|
#include "chainparams.h"
|
|
#include "hash.h"
|
|
#include "main.h"
|
|
#include "pow.h"
|
|
#include "uint256.h"
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <boost/thread.hpp>
|
|
|
|
using namespace std;
|
|
|
|
static const char DB_COINS = 'c';
|
|
static const char DB_BLOCK_FILES = 'f';
|
|
static const char DB_TXINDEX = 't';
|
|
static const char DB_BLOCK_INDEX = 'b';
|
|
|
|
static const char DB_BEST_BLOCK = 'B';
|
|
static const char DB_FLAG = 'F';
|
|
static const char DB_REINDEX_FLAG = 'R';
|
|
static const char DB_LAST_BLOCK = 'l';
|
|
|
|
|
|
CCoinsViewDB::CCoinsViewDB(size_t nCacheSize, bool fMemory, bool fWipe) : db(GetDataDir() / "chainstate", nCacheSize, fMemory, fWipe, true)
|
|
{
|
|
}
|
|
|
|
bool CCoinsViewDB::GetCoins(const uint256 &txid, CCoins &coins) const {
|
|
return db.Read(make_pair(DB_COINS, txid), coins);
|
|
}
|
|
|
|
bool CCoinsViewDB::HaveCoins(const uint256 &txid) const {
|
|
return db.Exists(make_pair(DB_COINS, txid));
|
|
}
|
|
|
|
uint256 CCoinsViewDB::GetBestBlock() const {
|
|
uint256 hashBestChain;
|
|
if (!db.Read(DB_BEST_BLOCK, hashBestChain))
|
|
return uint256();
|
|
return hashBestChain;
|
|
}
|
|
|
|
bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
|
|
CDBBatch batch(&db.GetObfuscateKey());
|
|
size_t count = 0;
|
|
size_t changed = 0;
|
|
for (CCoinsMap::iterator it = mapCoins.begin(); it != mapCoins.end();) {
|
|
if (it->second.flags & CCoinsCacheEntry::DIRTY) {
|
|
if (it->second.coins.IsPruned())
|
|
batch.Erase(make_pair(DB_COINS, it->first));
|
|
else
|
|
batch.Write(make_pair(DB_COINS, it->first), it->second.coins);
|
|
changed++;
|
|
}
|
|
count++;
|
|
CCoinsMap::iterator itOld = it++;
|
|
mapCoins.erase(itOld);
|
|
}
|
|
if (!hashBlock.IsNull())
|
|
batch.Write(DB_BEST_BLOCK, hashBlock);
|
|
|
|
LogPrint("coindb", "Committing %u changed transactions (out of %u) to coin database...\n", (unsigned int)changed, (unsigned int)count);
|
|
return db.WriteBatch(batch);
|
|
}
|
|
|
|
CBlockTreeDB::CBlockTreeDB(size_t nCacheSize, bool fMemory, bool fWipe) : CDBWrapper(GetDataDir() / "blocks" / "index", nCacheSize, fMemory, fWipe) {
|
|
}
|
|
|
|
bool CBlockTreeDB::ReadBlockFileInfo(int nFile, CBlockFileInfo &info) {
|
|
return Read(make_pair(DB_BLOCK_FILES, nFile), info);
|
|
}
|
|
|
|
bool CBlockTreeDB::WriteReindexing(bool fReindexing) {
|
|
if (fReindexing)
|
|
return Write(DB_REINDEX_FLAG, '1');
|
|
else
|
|
return Erase(DB_REINDEX_FLAG);
|
|
}
|
|
|
|
bool CBlockTreeDB::ReadReindexing(bool &fReindexing) {
|
|
fReindexing = Exists(DB_REINDEX_FLAG);
|
|
return true;
|
|
}
|
|
|
|
bool CBlockTreeDB::ReadLastBlockFile(int &nFile) {
|
|
return Read(DB_LAST_BLOCK, nFile);
|
|
}
|
|
|
|
CCoinsViewCursor *CCoinsViewDB::Cursor() const
|
|
{
|
|
CCoinsViewDBCursor *i = new CCoinsViewDBCursor(const_cast<CDBWrapper*>(&db)->NewIterator(), GetBestBlock());
|
|
/* It seems that there are no "const iterators" for LevelDB. Since we
|
|
only need read operations on it, use a const-cast to get around
|
|
that restriction. */
|
|
i->pcursor->Seek(DB_COINS);
|
|
// Cache key of first record
|
|
i->pcursor->GetKey(i->keyTmp);
|
|
return i;
|
|
}
|
|
|
|
bool CCoinsViewDBCursor::GetKey(uint256 &key) const
|
|
{
|
|
// Return cached key
|
|
if (keyTmp.first == DB_COINS) {
|
|
key = keyTmp.second;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool CCoinsViewDBCursor::GetValue(CCoins &coins) const
|
|
{
|
|
return pcursor->GetValue(coins);
|
|
}
|
|
|
|
unsigned int CCoinsViewDBCursor::GetValueSize() const
|
|
{
|
|
return pcursor->GetValueSize();
|
|
}
|
|
|
|
bool CCoinsViewDBCursor::Valid() const
|
|
{
|
|
return keyTmp.first == DB_COINS;
|
|
}
|
|
|
|
void CCoinsViewDBCursor::Next()
|
|
{
|
|
pcursor->Next();
|
|
if (!pcursor->Valid() || !pcursor->GetKey(keyTmp))
|
|
keyTmp.first = 0; // Invalidate cached key after last record so that Valid() and GetKey() return false
|
|
}
|
|
|
|
bool CBlockTreeDB::WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo) {
|
|
CDBBatch batch(&GetObfuscateKey());
|
|
for (std::vector<std::pair<int, const CBlockFileInfo*> >::const_iterator it=fileInfo.begin(); it != fileInfo.end(); it++) {
|
|
batch.Write(make_pair(DB_BLOCK_FILES, it->first), *it->second);
|
|
}
|
|
batch.Write(DB_LAST_BLOCK, nLastFile);
|
|
for (std::vector<const CBlockIndex*>::const_iterator it=blockinfo.begin(); it != blockinfo.end(); it++) {
|
|
batch.Write(make_pair(DB_BLOCK_INDEX, (*it)->GetBlockHash()), CDiskBlockIndex(*it));
|
|
}
|
|
return WriteBatch(batch, true);
|
|
}
|
|
|
|
bool CBlockTreeDB::ReadTxIndex(const uint256 &txid, CDiskTxPos &pos) {
|
|
return Read(make_pair(DB_TXINDEX, txid), pos);
|
|
}
|
|
|
|
bool CBlockTreeDB::WriteTxIndex(const std::vector<std::pair<uint256, CDiskTxPos> >&vect) {
|
|
CDBBatch batch(&GetObfuscateKey());
|
|
for (std::vector<std::pair<uint256,CDiskTxPos> >::const_iterator it=vect.begin(); it!=vect.end(); it++)
|
|
batch.Write(make_pair(DB_TXINDEX, it->first), it->second);
|
|
return WriteBatch(batch);
|
|
}
|
|
|
|
bool CBlockTreeDB::WriteFlag(const std::string &name, bool fValue) {
|
|
return Write(std::make_pair(DB_FLAG, name), fValue ? '1' : '0');
|
|
}
|
|
|
|
bool CBlockTreeDB::ReadFlag(const std::string &name, bool &fValue) {
|
|
char ch;
|
|
if (!Read(std::make_pair(DB_FLAG, name), ch))
|
|
return false;
|
|
fValue = ch == '1';
|
|
return true;
|
|
}
|
|
|
|
bool CBlockTreeDB::LoadBlockIndexGuts()
|
|
{
|
|
boost::scoped_ptr<CDBIterator> pcursor(NewIterator());
|
|
|
|
pcursor->Seek(make_pair(DB_BLOCK_INDEX, uint256()));
|
|
|
|
// Load mapBlockIndex
|
|
while (pcursor->Valid()) {
|
|
boost::this_thread::interruption_point();
|
|
std::pair<char, uint256> key;
|
|
if (pcursor->GetKey(key) && key.first == DB_BLOCK_INDEX) {
|
|
CDiskBlockIndex diskindex;
|
|
if (pcursor->GetValue(diskindex)) {
|
|
// Construct block index object
|
|
CBlockIndex* pindexNew = InsertBlockIndex(diskindex.GetBlockHash());
|
|
pindexNew->pprev = InsertBlockIndex(diskindex.hashPrev);
|
|
pindexNew->nHeight = diskindex.nHeight;
|
|
pindexNew->nFile = diskindex.nFile;
|
|
pindexNew->nDataPos = diskindex.nDataPos;
|
|
pindexNew->nUndoPos = diskindex.nUndoPos;
|
|
pindexNew->nVersion = diskindex.nVersion;
|
|
pindexNew->hashMerkleRoot = diskindex.hashMerkleRoot;
|
|
pindexNew->nTime = diskindex.nTime;
|
|
pindexNew->nBits = diskindex.nBits;
|
|
pindexNew->nNonce = diskindex.nNonce;
|
|
pindexNew->nStatus = diskindex.nStatus;
|
|
pindexNew->nTx = diskindex.nTx;
|
|
|
|
if (!CheckProofOfWork(pindexNew->GetBlockHash(), pindexNew->nBits, Params().GetConsensus()))
|
|
return error("LoadBlockIndex(): CheckProofOfWork failed: %s", pindexNew->ToString());
|
|
|
|
pcursor->Next();
|
|
} else {
|
|
return error("LoadBlockIndex() : failed to read value");
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|