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Use DB Transactions when encrypting wallet.

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This speeds up the encryption process significantly.
This commit is contained in:
Matt Corallo 2011-07-08 15:08:27 +02:00
parent 0efda1a79e
commit 96f34cd5c4
2 changed files with 29 additions and 6 deletions
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31
src/wallet.cpp
View File

@ -31,7 +31,13 @@ bool CWallet::AddCryptedKey(const vector<unsigned char> &vchPubKey, const vector
return false;
if (!fFileBacked)
return true;
return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret);
CRITICAL_BLOCK(cs_pwalletdbEncryption)
{
if (pwalletdbEncryption)
return pwalletdbEncryption->WriteCryptedKey(vchPubKey, vchCryptedSecret);
else
return CWalletDB(strWalletFile).WriteCryptedKey(vchPubKey, vchCryptedSecret);
}
}
bool CWallet::Unlock(const string& strWalletPassphrase)
@ -104,10 +110,10 @@ bool CWallet::ChangeWalletPassphrase(const string& strOldWalletPassphrase, const
bool CWallet::EncryptWallet(const string& strWalletPassphrase)
{
//TODO: use db commits
CRITICAL_BLOCK(cs_mapPubKeys)
CRITICAL_BLOCK(cs_KeyStore)
CRITICAL_BLOCK(cs_vMasterKey)
CRITICAL_BLOCK(cs_pwalletdbEncryption)
{
if (IsCrypted())
return false;
@ -146,13 +152,26 @@ bool CWallet::EncryptWallet(const string& strWalletPassphrase)
mapMasterKeys[++nMasterKeyMaxID] = kMasterKey;
if (fFileBacked)
{
DBFlush(false);
CWalletDB(strWalletFile).WriteMasterKey(nMasterKeyMaxID, kMasterKey);
DBFlush(false);
pwalletdbEncryption = new CWalletDB(strWalletFile);
pwalletdbEncryption->TxnBegin();
pwalletdbEncryption->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
}
if (!EncryptKeys(vMasterKey))
exit(1); //We now probably have half of our keys encrypted, and half not...die and let the user ask someone with experience to recover their wallet.
{
if (fFileBacked)
pwalletdbEncryption->TxnAbort();
exit(1); //We now probably have half of our keys encrypted in memory, and half not...die and let the user reload their unencrypted wallet.
}
if (fFileBacked)
{
if (!pwalletdbEncryption->TxnCommit())
exit(1); //We now have keys encrypted in memory, but no on disk...die to avoid confusion and let the user reload their unencrypted wallet.
pwalletdbEncryption->Close();
pwalletdbEncryption = NULL;
}
Lock();
}

4
src/wallet.h
View File

@ -18,6 +18,8 @@ private:
bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, std::set<std::pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const;
bool SelectCoins(int64 nTargetValue, std::set<std::pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const;
CWalletDB *pwalletdbEncryption;
CCriticalSection cs_pwalletdbEncryption;
public:
bool fFileBacked;
@ -34,12 +36,14 @@ public:
{
fFileBacked = false;
nMasterKeyMaxID = 0;
pwalletdbEncryption = NULL;
}
CWallet(std::string strWalletFileIn)
{
strWalletFile = strWalletFileIn;
fFileBacked = true;
nMasterKeyMaxID = 0;
pwalletdbEncryption = NULL;
}
mutable CCriticalSection cs_mapWallet;