// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
-// Copyright (c) 2011-2012 The PPCoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_DB_H
class CWalletTx;
extern unsigned int nWalletDBUpdated;
-extern bool fDetachDB;
-extern DbEnv dbenv;
-extern void DBFlush(bool fShutdown);
void ThreadFlushWalletDB(void* parg);
bool BackupWallet(const CWallet& wallet, const std::string& strDest);
+bool DumpWallet(CWallet* pwallet, const std::string& strDest);
+bool ImportWallet(CWallet* pwallet, const std::string& strLocation);
+
+class CDBEnv
+{
+private:
+ bool fDetachDB;
+ bool fDbEnvInit;
+ bool fMockDb;
+ boost::filesystem::path pathEnv;
+ std::string strPath;
+
+ void EnvShutdown();
+
+public:
+ mutable CCriticalSection cs_db;
+ DbEnv dbenv;
+ std::map<std::string, int> mapFileUseCount;
+ std::map<std::string, Db*> mapDb;
+
+ CDBEnv();
+ ~CDBEnv();
+
+ /*
+ * Verify that database file strFile is OK. If it is not,
+ * call the callback to try to recover.
+ * This must be called BEFORE strFile is opened.
+ * Returns true if strFile is OK.
+ */
+ enum VerifyResult { VERIFY_OK, RECOVER_OK, RECOVER_FAIL };
+ VerifyResult Verify(std::string strFile, bool (*recoverFunc)(CDBEnv& dbenv, std::string strFile));
+ /*
+ * Salvage data from a file that Verify says is bad.
+ * fAggressive sets the DB_AGGRESSIVE flag (see berkeley DB->verify() method documentation).
+ * Appends binary key/value pairs to vResult, returns true if successful.
+ * NOTE: reads the entire database into memory, so cannot be used
+ * for huge databases.
+ */
+ typedef std::pair<std::vector<unsigned char>, std::vector<unsigned char> > KeyValPair;
+ bool Salvage(std::string strFile, bool fAggressive, std::vector<KeyValPair>& vResult);
+
+ bool Open(boost::filesystem::path pathEnv_);
+ void Close();
+ void Flush(bool fShutdown);
+ void CheckpointLSN(std::string strFile);
+ void SetDetach(bool fDetachDB_) { fDetachDB = fDetachDB_; }
+ bool GetDetach() { return fDetachDB; }
+
+ void CloseDb(const std::string& strFile);
+ bool RemoveDb(const std::string& strFile);
+
+ DbTxn *TxnBegin(int flags=DB_TXN_WRITE_NOSYNC);
+};
+
+extern CDBEnv bitdb;
/** RAII class that provides access to a Berkeley database */
protected:
Db* pdb;
std::string strFile;
- std::vector<DbTxn*> vTxn;
+ DbTxn *activeTxn;
bool fReadOnly;
explicit CDB(const char* pszFile, const char* pszMode="r+");
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
ssKey.reserve(1000);
ssKey << key;
- Dbt datKey(&ssKey[0], ssKey.size());
+ Dbt datKey(&ssKey[0], (uint32_t)ssKey.size());
// Read
Dbt datValue;
datValue.set_flags(DB_DBT_MALLOC);
- int ret = pdb->get(GetTxn(), &datKey, &datValue, 0);
+ int ret = pdb->get(activeTxn, &datKey, &datValue, 0);
memset(datKey.get_data(), 0, datKey.get_size());
if (datValue.get_data() == NULL)
return false;
CDataStream ssValue((char*)datValue.get_data(), (char*)datValue.get_data() + datValue.get_size(), SER_DISK, CLIENT_VERSION);
ssValue >> value;
}
- catch (std::exception &e) {
+ catch (const std::exception&) {
return false;
}
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
ssKey.reserve(1000);
ssKey << key;
- Dbt datKey(&ssKey[0], ssKey.size());
+ Dbt datKey(&ssKey[0], (uint32_t)ssKey.size());
// Value
CDataStream ssValue(SER_DISK, CLIENT_VERSION);
ssValue.reserve(10000);
ssValue << value;
- Dbt datValue(&ssValue[0], ssValue.size());
+ Dbt datValue(&ssValue[0], (uint32_t)ssValue.size());
// Write
- int ret = pdb->put(GetTxn(), &datKey, &datValue, (fOverwrite ? 0 : DB_NOOVERWRITE));
+ int ret = pdb->put(activeTxn, &datKey, &datValue, (fOverwrite ? 0 : DB_NOOVERWRITE));
// Clear memory in case it was a private key
memset(datKey.get_data(), 0, datKey.get_size());
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
ssKey.reserve(1000);
ssKey << key;
- Dbt datKey(&ssKey[0], ssKey.size());
+ Dbt datKey(&ssKey[0], (uint32_t)ssKey.size());
// Erase
- int ret = pdb->del(GetTxn(), &datKey, 0);
+ int ret = pdb->del(activeTxn, &datKey, 0);
// Clear memory
memset(datKey.get_data(), 0, datKey.get_size());
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
ssKey.reserve(1000);
ssKey << key;
- Dbt datKey(&ssKey[0], ssKey.size());
+ Dbt datKey(&ssKey[0], (uint32_t)ssKey.size());
// Exists
- int ret = pdb->exists(GetTxn(), &datKey, 0);
+ int ret = pdb->exists(activeTxn, &datKey, 0);
// Clear memory
memset(datKey.get_data(), 0, datKey.get_size());
return (ret == 0);
}
- Dbc* GetCursor()
- {
- if (!pdb)
- return NULL;
- Dbc* pcursor = NULL;
- int ret = pdb->cursor(NULL, &pcursor, 0);
- if (ret != 0)
- return NULL;
- return pcursor;
- }
-
- int ReadAtCursor(Dbc* pcursor, CDataStream& ssKey, CDataStream& ssValue, unsigned int fFlags=DB_NEXT)
- {
- // Read at cursor
- Dbt datKey;
- if (fFlags == DB_SET || fFlags == DB_SET_RANGE || fFlags == DB_GET_BOTH || fFlags == DB_GET_BOTH_RANGE)
- {
- datKey.set_data(&ssKey[0]);
- datKey.set_size(ssKey.size());
- }
- Dbt datValue;
- if (fFlags == DB_GET_BOTH || fFlags == DB_GET_BOTH_RANGE)
- {
- datValue.set_data(&ssValue[0]);
- datValue.set_size(ssValue.size());
- }
- datKey.set_flags(DB_DBT_MALLOC);
- datValue.set_flags(DB_DBT_MALLOC);
- int ret = pcursor->get(&datKey, &datValue, fFlags);
- if (ret != 0)
- return ret;
- else if (datKey.get_data() == NULL || datValue.get_data() == NULL)
- return 99999;
-
- // Convert to streams
- ssKey.SetType(SER_DISK);
- ssKey.clear();
- ssKey.write((char*)datKey.get_data(), datKey.get_size());
- ssValue.SetType(SER_DISK);
- ssValue.clear();
- ssValue.write((char*)datValue.get_data(), datValue.get_size());
-
- // Clear and free memory
- memset(datKey.get_data(), 0, datKey.get_size());
- memset(datValue.get_data(), 0, datValue.get_size());
- free(datKey.get_data());
- free(datValue.get_data());
- return 0;
- }
-
- DbTxn* GetTxn()
- {
- if (!vTxn.empty())
- return vTxn.back();
- else
- return NULL;
- }
+ Dbc* GetCursor();
+ int ReadAtCursor(Dbc* pcursor, CDataStream& ssKey, CDataStream& ssValue, unsigned int fFlags=DB_NEXT);
public:
- bool TxnBegin()
- {
- if (!pdb)
- return false;
- DbTxn* ptxn = NULL;
- int ret = dbenv.txn_begin(GetTxn(), &ptxn, DB_TXN_WRITE_NOSYNC);
- if (!ptxn || ret != 0)
- return false;
- vTxn.push_back(ptxn);
- return true;
- }
-
- bool TxnCommit()
- {
- if (!pdb)
- return false;
- if (vTxn.empty())
- return false;
- int ret = vTxn.back()->commit(0);
- vTxn.pop_back();
- return (ret == 0);
- }
-
- bool TxnAbort()
- {
- if (!pdb)
- return false;
- if (vTxn.empty())
- return false;
- int ret = vTxn.back()->abort();
- vTxn.pop_back();
- return (ret == 0);
- }
-
- bool ReadVersion(int& nVersion)
- {
- nVersion = 0;
- return Read(std::string("version"), nVersion);
- }
-
- bool WriteVersion(int nVersion)
- {
- return Write(std::string("version"), nVersion);
- }
-
+ bool TxnBegin();
+ bool TxnCommit();
+ bool TxnAbort();
+ bool ReadVersion(int& nVersion);
+ bool WriteVersion(int nVersion);
bool static Rewrite(const std::string& strFile, const char* pszSkip = NULL);
};
-
-
-
-
-
-/** Access to the transaction database (blkindex.dat) */
-class CTxDB : public CDB
-{
-public:
- CTxDB(const char* pszMode="r+") : CDB("blkindex.dat", pszMode) { }
-private:
- CTxDB(const CTxDB&);
- void operator=(const CTxDB&);
-public:
- bool ReadTxIndex(uint256 hash, CTxIndex& txindex);
- bool UpdateTxIndex(uint256 hash, const CTxIndex& txindex);
- bool AddTxIndex(const CTransaction& tx, const CDiskTxPos& pos, int nHeight);
- bool EraseTxIndex(const CTransaction& tx);
- bool ContainsTx(uint256 hash);
- bool ReadOwnerTxes(uint160 hash160, int nHeight, std::vector<CTransaction>& vtx);
- bool ReadDiskTx(uint256 hash, CTransaction& tx, CTxIndex& txindex);
- bool ReadDiskTx(uint256 hash, CTransaction& tx);
- bool ReadDiskTx(COutPoint outpoint, CTransaction& tx, CTxIndex& txindex);
- bool ReadDiskTx(COutPoint outpoint, CTransaction& tx);
- bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
- bool EraseBlockIndex(uint256 hash);
- bool ReadHashBestChain(uint256& hashBestChain);
- bool WriteHashBestChain(uint256 hashBestChain);
- bool ReadBestInvalidTrust(uint64& nBestInvalidTrust);
- bool WriteBestInvalidTrust(uint64 nBestInvalidTrust);
- bool ReadSyncCheckpoint(uint256& hashCheckpoint);
- bool WriteSyncCheckpoint(uint256 hashCheckpoint);
- bool ReadCheckpointPubKey(std::string& strPubKey);
- bool WriteCheckpointPubKey(const std::string& strPubKey);
- bool LoadBlockIndex();
-};
-
-
-
-
-/** Access to the (IP) address database (addr.dat) */
-class CAddrDB : public CDB
+/** Access to the (IP) address database (peers.dat) */
+class CAddrDB
{
-public:
- CAddrDB(const char* pszMode="r+") : CDB("addr.dat", pszMode) { }
private:
- CAddrDB(const CAddrDB&);
- void operator=(const CAddrDB&);
+ boost::filesystem::path pathAddr;
public:
- bool WriteAddrman(const CAddrMan& addr);
- bool LoadAddresses();
+ CAddrDB();
+ bool Write(const CAddrMan& addr);
+ bool Read(CAddrMan& addr);
};
-bool LoadAddresses();
-
-
#endif // BITCOIN_DB_H
git://git.novaco.in / novacoin.git / blobdiff