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Decouple CBlockUndo from CDiskBlockPos

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jtimon 2014-10-27 14:35:52 +01:00 committed by jtimon
parent d7621ccf9d
commit e035c6a737
2 changed files with 16 additions and 18 deletions
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31
src/main.cpp
View file

@ -1520,7 +1520,8 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsVi
return true;
}
bool UndoWriteToDisk(const CBlockUndo& blockundo, CDiskBlockPos& pos, const uint256& hashBlock);
bool UndoReadFromDisk(CBlockUndo& blockundo, const CDiskBlockPos& pos, const uint256& hashBlock);
bool DisconnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, CCoinsViewCache& view, bool* pfClean)
{
@ -1535,7 +1536,7 @@ bool DisconnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex
CDiskBlockPos pos = pindex->GetUndoPos();
if (pos.IsNull())
return error("DisconnectBlock() : no undo data available");
if (!blockUndo.ReadFromDisk(pos, pindex->pprev->GetBlockHash()))
if (!UndoReadFromDisk(blockUndo, pos, pindex->pprev->GetBlockHash()))
return error("DisconnectBlock() : failure reading undo data");
if (blockUndo.vtxundo.size() + 1 != block.vtx.size())
@ -1777,7 +1778,7 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
CDiskBlockPos pos;
if (!FindUndoPos(state, pindex->nFile, pos, ::GetSerializeSize(blockundo, SER_DISK, CLIENT_VERSION) + 40))
return error("ConnectBlock() : FindUndoPos failed");
if (!blockundo.WriteToDisk(pos, pindex->pprev->GetBlockHash()))
if (!UndoWriteToDisk(blockundo, pos, pindex->pprev->GetBlockHash()))
return state.Abort("Failed to write undo data");
// update nUndoPos in block index
@ -2943,7 +2944,7 @@ bool CVerifyDB::VerifyDB(CCoinsView *coinsview, int nCheckLevel, int nCheckDepth
CBlockUndo undo;
CDiskBlockPos pos = pindex->GetUndoPos();
if (!pos.IsNull()) {
if (!undo.ReadFromDisk(pos, pindex->pprev->GetBlockHash()))
if (!UndoReadFromDisk(undo, pos, pindex->pprev->GetBlockHash()))
return error("VerifyDB() : *** found bad undo data at %d, hash=%s\n", pindex->nHeight, pindex->GetBlockHash().ToString());
}
}
@ -4509,44 +4510,44 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
}
bool CBlockUndo::WriteToDisk(CDiskBlockPos &pos, const uint256 &hashBlock)
bool UndoWriteToDisk(const CBlockUndo& blockundo, CDiskBlockPos& pos, const uint256& hashBlock)
{
// Open history file to append
CAutoFile fileout(OpenUndoFile(pos), SER_DISK, CLIENT_VERSION);
if (fileout.IsNull())
return error("CBlockUndo::WriteToDisk : OpenUndoFile failed");
return error("%s : OpenUndoFile failed", __func__);
// Write index header
unsigned int nSize = fileout.GetSerializeSize(*this);
unsigned int nSize = fileout.GetSerializeSize(blockundo);
fileout << FLATDATA(Params().MessageStart()) << nSize;
// Write undo data
long fileOutPos = ftell(fileout.Get());
if (fileOutPos < 0)
return error("CBlockUndo::WriteToDisk : ftell failed");
return error("%s : ftell failed", __func__);
pos.nPos = (unsigned int)fileOutPos;
fileout << *this;
fileout << blockundo;
// calculate & write checksum
CHashWriter hasher(SER_GETHASH, PROTOCOL_VERSION);
hasher << hashBlock;
hasher << *this;
hasher << blockundo;
fileout << hasher.GetHash();
return true;
}
bool CBlockUndo::ReadFromDisk(const CDiskBlockPos &pos, const uint256 &hashBlock)
bool UndoReadFromDisk(CBlockUndo& blockundo, const CDiskBlockPos& pos, const uint256& hashBlock)
{
// Open history file to read
CAutoFile filein(OpenUndoFile(pos, true), SER_DISK, CLIENT_VERSION);
if (filein.IsNull())
return error("CBlockUndo::ReadFromDisk : OpenBlockFile failed");
return error("%s : OpenBlockFile failed", __func__);
// Read block
uint256 hashChecksum;
try {
filein >> *this;
filein >> blockundo;
filein >> hashChecksum;
}
catch (const std::exception& e) {
@ -4556,9 +4557,9 @@ bool CBlockUndo::ReadFromDisk(const CDiskBlockPos &pos, const uint256 &hashBlock
// Verify checksum
CHashWriter hasher(SER_GETHASH, PROTOCOL_VERSION);
hasher << hashBlock;
hasher << *this;
hasher << blockundo;
if (hashChecksum != hasher.GetHash())
return error("CBlockUndo::ReadFromDisk : Checksum mismatch");
return error("%s : Checksum mismatch", __func__);
return true;
}

3
src/main.h
View file

@ -314,9 +314,6 @@ public:
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
READWRITE(vtxundo);
}
bool WriteToDisk(CDiskBlockPos &pos, const uint256 &hashBlock);
bool ReadFromDisk(const CDiskBlockPos &pos, const uint256 &hashBlock);
};