Remove BDB block database support

bitcoin-qt.pro

@@ -90,33 +90,23 @@ contains(BITCOIN_NEED_QT_PLUGINS, 1) {
     QTPLUGIN += qcncodecs qjpcodecs qtwcodecs qkrcodecs qtaccessiblewidgets
 }
 
-contains(USE_LEVELDB, -) {
+INCLUDEPATH += src/leveldb/include src/leveldb/helpers
-    message(Building without LevelDB)
+LIBS += $$PWD/src/leveldb/libleveldb.a $$PWD/src/leveldb/libmemenv.a
-    SOURCES += src/txdb-bdb.cpp
+!windows {
-    HEADERS += src/txdb-bdb.h
+    genleveldb.commands = cd $$PWD/src/leveldb ; $(MAKE) libleveldb.a libmemenv.a
 } else {
-    message(Building with LevelDB)
+    # make an educated guess about what the ranlib command is called
-    DEFINES += USE_LEVELDB
+    isEmpty(QMAKE_RANLIB) {
-    INCLUDEPATH += src/leveldb/include src/leveldb/helpers
+        QMAKE_RANLIB = $$replace(QMAKE_STRIP, strip, ranlib)
-    LIBS += $$PWD/src/leveldb/libleveldb.a $$PWD/src/leveldb/libmemenv.a
-    SOURCES += src/leveldb.cpp src/txdb-leveldb.cpp
-    HEADERS += src/leveldb.h src/txdb-leveldb.h
-    !windows {
-        genleveldb.commands = cd $$PWD/src/leveldb ; $(MAKE) libleveldb.a libmemenv.a
-    } else {
-        # make an educated guess about what the ranlib command is called
-        isEmpty(QMAKE_RANLIB) {
-            QMAKE_RANLIB = $$replace(QMAKE_STRIP, strip, ranlib)
-        }
-        genleveldb.commands = cd $$PWD/src/leveldb ; CC=$$QMAKE_CC CXX=$$QMAKE_CXX TARGET_OS=OS_WINDOWS_CROSSCOMPILE CXXFLAGS="-I$$BOOST_INCLUDE_PATH" LDFLAGS="-L$$BOOST_LIB_PATH" $(MAKE) libleveldb.a libmemenv.a ; $$QMAKE_RANLIB $$PWD/src/leveldb/libleveldb.a ; $$QMAKE_RANLIB $$PWD/src/leveldb/libmemenv.a
     }
-    genleveldb.target = $$PWD/src/leveldb/libleveldb.a
+    genleveldb.commands = cd $$PWD/src/leveldb ; CC=$$QMAKE_CC CXX=$$QMAKE_CXX TARGET_OS=OS_WINDOWS_CROSSCOMPILE CXXFLAGS="-I$$BOOST_INCLUDE_PATH" LDFLAGS="-L$$BOOST_LIB_PATH" $(MAKE) libleveldb.a libmemenv.a ; $$QMAKE_RANLIB $$PWD/src/leveldb/libleveldb.a ; $$QMAKE_RANLIB $$PWD/src/leveldb/libmemenv.a
-    genleveldb.depends = FORCE
-    PRE_TARGETDEPS += $$PWD/src/leveldb/libleveldb.a
-    QMAKE_EXTRA_TARGETS += genleveldb
-    # Gross ugly hack that depends on qmake internals, unfortunately there's no other way to do it.
-    QMAKE_CLEAN += $$PWD/src/leveldb/libleveldb.a; cd $$PWD/src/leveldb ; $(MAKE) clean
 }
+genleveldb.target = $$PWD/src/leveldb/libleveldb.a
+genleveldb.depends = FORCE
+PRE_TARGETDEPS += $$PWD/src/leveldb/libleveldb.a
+QMAKE_EXTRA_TARGETS += genleveldb
+# Gross ugly hack that depends on qmake internals, unfortunately there's no other way to do it.
+QMAKE_CLEAN += $$PWD/src/leveldb/libleveldb.a; cd $$PWD/src/leveldb ; $(MAKE) clean
 
 # regenerate src/build.h
 !windows|contains(USE_BUILD_INFO, 1) {
@@ -202,7 +192,9 @@ HEADERS += src/qt/bitcoingui.h \
     src/qt/rpcconsole.h \
     src/version.h \
     src/netbase.h \
-    src/clientversion.h
+    src/clientversion.h \
+    src/txdb.h \
+    src/leveldb.h
 
 SOURCES += src/qt/bitcoin.cpp src/qt/bitcoingui.cpp \
     src/qt/transactiontablemodel.cpp \
@@ -262,7 +254,9 @@ SOURCES += src/qt/bitcoin.cpp src/qt/bitcoingui.cpp \
     src/qt/notificator.cpp \
     src/qt/qtipcserver.cpp \
     src/qt/rpcconsole.cpp \
-    src/noui.cpp
+    src/noui.cpp \
+    src/leveldb.cpp \
+    src/txdb.cpp
 
 RESOURCES += \
     src/qt/bitcoin.qrc

src/makefile.linux-mingw

@@ -6,7 +6,6 @@ DEPSDIR:=/usr/i586-mingw32msvc
 
 USE_UPNP:=0
 USE_IPV6:=1
-USE_LEVELDB:=1
 
 INCLUDEPATHS= \
  -I"$(CURDIR)" \
@@ -83,21 +82,18 @@ OBJS= \
     obj/util.o \
     obj/wallet.o \
     obj/walletdb.o \
-    obj/noui.o
+    obj/noui.o \
+    obj/leveldb.o \
+    obj/txdb.o
 
 all: bitcoind.exe
 
-ifdef USE_LEVELDB
 LIBS += $(CURDIR)/leveldb/libleveldb.a $(CURDIR)/leveldb/libmemenv.a
-DEFS += -I"$(CURDIR)/leveldb/include" -DUSE_LEVELDB
+DEFS += -I"$(CURDIR)/leveldb/include"
 DEFS += -I"$(CURDIR)/leveldb/helpers"
-OBJS += obj/leveldb.o obj/txdb-leveldb.o
 leveldb/libleveldb.a:
 	@echo "Building LevelDB ..."; cd leveldb; TARGET_OS=OS_WINDOWS_CROSSCOMPILE CXXFLAGS="-I$(INCLUDEPATHS)" LDFLAGS="-L$(LIBPATHS)" make libleveldb.a libmemenv.a; cd ..
 obj/leveldb.o: leveldb/libleveldb.a
-else
-OBJS += obj/txdb-bdb.o
-endif
 
 obj/build.h: FORCE
 	/bin/sh ../share/genbuild.sh obj/build.h

src/makefile.mingw

@@ -4,7 +4,6 @@
 
 USE_UPNP:=0
 USE_IPV6:=1
-USE_LEVELDB:=1
 
 INCLUDEPATHS= \
  -I"C:\boost-1.50.0-mgw" \
@@ -79,7 +78,9 @@ OBJS= \
     obj/util.o \
     obj/wallet.o \
     obj/walletdb.o \
-    obj/noui.o
+    obj/noui.o \
+    obj/leveldb.o \
+    obj/txdb.o
 
 
 all: bitcoind.exe
@@ -90,17 +91,12 @@ test check: test_bitcoin.exe FORCE
 #
 # LevelDB support
 #
-ifdef USE_LEVELDB
 LIBS += $(CURDIR)/leveldb/libleveldb.a $(CURDIR)/leveldb/libmemenv.a
-DEFS += $(addprefix -I,$(CURDIR)/leveldb/include) -DUSE_LEVELDB
+DEFS += $(addprefix -I,$(CURDIR)/leveldb/include)
 DEFS += $(addprefix -I,$(CURDIR)/leveldb/helpers)
-OBJS += obj/leveldb.o obj/txdb-leveldb.o
 leveldb/libleveldb.a:
     cd leveldb; make libleveldb.a libmemenv.a; cd ..
 obj/leveldb.o: leveldb/libleveldb.lib
-else
-OBJS += obj/txdb-bdb.o
-endif
 
 obj/%.o: %.cpp $(HEADERS)
 	g++ -c $(CFLAGS) -o $@ $<

src/makefile.osx

@@ -21,7 +21,6 @@ LIBPATHS= \
 
 USE_UPNP:=1
 USE_IPV6:=1
-USE_LEVELDB:=1
 
 LIBS= -dead_strip
 
@@ -97,7 +96,9 @@ OBJS= \
     obj/util.o \
     obj/wallet.o \
     obj/walletdb.o \
-    obj/noui.o
+    obj/noui.o \
+    obj/leveldb.o \
+    obj/txdb.o
 
 ifndef USE_UPNP
 	override USE_UPNP = -
@@ -123,17 +124,12 @@ test check: test_bitcoin FORCE
 #
 # LevelDB support
 #
-ifdef USE_LEVELDB
 LIBS += $(CURDIR)/leveldb/libleveldb.a $(CURDIR)/leveldb/libmemenv.a
-DEFS += $(addprefix -I,$(CURDIR)/leveldb/include) -DUSE_LEVELDB
+DEFS += $(addprefix -I,$(CURDIR)/leveldb/include)
 DEFS += $(addprefix -I,$(CURDIR)/leveldb/helpers)
-OBJS += obj/leveldb.o obj/txdb-leveldb.o
 leveldb/libleveldb.a:
 	@echo "Building LevelDB ..."; cd leveldb; make libleveldb.a libmemenv.a; cd ..
 obj/leveldb.o: leveldb/libleveldb.a
-else
-OBJS += obj/txdb-bdb.o
-endif
 
 # auto-generated dependencies:
 -include obj/*.P

src/makefile.unix

@@ -4,7 +4,6 @@
 
 USE_UPNP:=0
 USE_IPV6:=1
-USE_LEVELDB:=1
 
 LINK:=$(CXX)
 
@@ -128,7 +127,9 @@ OBJS= \
     obj/util.o \
     obj/wallet.o \
     obj/walletdb.o \
-    obj/noui.o
+    obj/noui.o \
+    obj/leveldb.o \
+    obj/txdb.o
 
 
 all: bitcoind
@@ -139,17 +140,12 @@ test check: test_bitcoin FORCE
 #
 # LevelDB support
 #
-ifdef USE_LEVELDB
 LIBS += $(CURDIR)/leveldb/libleveldb.a $(CURDIR)/leveldb/libmemenv.a
-DEFS += $(addprefix -I,$(CURDIR)/leveldb/include) -DUSE_LEVELDB
+DEFS += $(addprefix -I,$(CURDIR)/leveldb/include)
 DEFS += $(addprefix -I,$(CURDIR)/leveldb/helpers)
-OBJS += obj/leveldb.o obj/txdb-leveldb.o
 leveldb/libleveldb.a:
 	@echo "Building LevelDB ..."; cd leveldb; make libleveldb.a libmemenv.a; cd ..;
 obj/leveldb.o: leveldb/libleveldb.a
-else
-OBJS += obj/txdb-bdb.o
-endif
 
 # auto-generated dependencies:
 -include obj/*.P

src/test/test_bitcoin.cpp

@@ -19,13 +19,8 @@ struct TestingSetup {
         fPrintToDebugger = true; // don't want to write to debug.log file
         noui_connect();
         bitdb.MakeMock();
-#ifdef USE_LEVELDB
         pblocktree = new CBlockTreeDB(true);
         pcoinsdbview = new CCoinsViewDB(true);
-#else
-        pblocktree = new CBlockTreeDB();
-        pcoinsdbview = new CCoinsViewDB();
-#endif
         pcoinsTip = new CCoinsViewCache(*pcoinsdbview);
         LoadBlockIndex(true);
         bool fFirstRun;

src/txdb-bdb.cpp

@@ -1,171 +0,0 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2012 The Bitcoin developers
-// Distributed under the MIT/X11 software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include "txdb-bdb.h"
-
-bool CCoinsDB::HaveCoins(uint256 hash) {
-    assert(!fClient);
-    return Exists(make_pair('c', hash));
-}
-
-bool CCoinsDB::ReadCoins(uint256 hash, CCoins &coins) {
-    assert(!fClient);
-    return Read(make_pair('c', hash), coins);
-}
-
-bool CCoinsDB::WriteCoins(uint256 hash, const CCoins &coins) {
-    assert(!fClient);
-    if (coins.IsPruned())
-        return Erase(make_pair('c', hash));
-    else
-        return Write(make_pair('c', hash), coins);
-}
-
-bool CCoinsDB::ReadHashBestChain(uint256& hashBestChain)
-{
-    return Read('B', hashBestChain);
-}
-
-bool CCoinsDB::WriteHashBestChain(uint256 hashBestChain)
-{
-    return Write('B', hashBestChain);
-}
-
-bool CBlockTreeDB::WriteBlockIndex(const CDiskBlockIndex& blockindex)
-{
-    return Write(make_pair('b', blockindex.GetBlockHash()), blockindex);
-}
-
-bool CBlockTreeDB::ReadBestInvalidWork(CBigNum& bnBestInvalidWork)
-{
-    return Read('I', bnBestInvalidWork);
-}
-
-bool CBlockTreeDB::WriteBestInvalidWork(CBigNum bnBestInvalidWork)
-{
-    return Write('I', bnBestInvalidWork);
-}
-
-bool CBlockTreeDB::WriteBlockFileInfo(int nFile, const CBlockFileInfo &info) {
-    return Write(make_pair('f', nFile), info);
-}
-
-bool CBlockTreeDB::ReadBlockFileInfo(int nFile, CBlockFileInfo &info) {
-    return Read(make_pair('f', nFile), info);
-}
-
-bool CBlockTreeDB::WriteLastBlockFile(int nFile) {
-    return Write('l', nFile);
-}
-
-bool CBlockTreeDB::ReadLastBlockFile(int &nFile) {
-    return Read('l', nFile);
-}
-
-CCoinsViewDB::CCoinsViewDB() : db() {}
-bool CCoinsViewDB::GetCoins(uint256 txid, CCoins &coins) { return db.ReadCoins(txid, coins); }
-bool CCoinsViewDB::SetCoins(uint256 txid, const CCoins &coins) { return db.WriteCoins(txid, coins); }
-bool CCoinsViewDB::HaveCoins(uint256 txid) { return db.HaveCoins(txid); }
-CBlockIndex *CCoinsViewDB::GetBestBlock() {
-    uint256 hashBestChain;
-    if (!db.ReadHashBestChain(hashBestChain))
-        return NULL;
-    std::map<uint256, CBlockIndex*>::iterator it = mapBlockIndex.find(hashBestChain);
-    if (it == mapBlockIndex.end())
-        return NULL;
-    return it->second;
-}
-bool CCoinsViewDB::SetBestBlock(CBlockIndex *pindex) { return db.WriteHashBestChain(pindex->GetBlockHash()); }
-bool CCoinsViewDB::BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex) {
-    printf("Committing %u changed transactions to coin database...\n", (unsigned int)mapCoins.size());
-
-    if (!db.TxnBegin())
-        return false;
-    bool fOk = true;
-    for (std::map<uint256, CCoins>::const_iterator it = mapCoins.begin(); it != mapCoins.end(); it++) {
-        fOk = db.WriteCoins(it->first, it->second);
-        if (!fOk)
-            break;
-    }
-    if (fOk)
-        fOk = db.WriteHashBestChain(pindex->GetBlockHash());
-
-    if (!fOk)
-        db.TxnAbort();
-    else
-        fOk = db.TxnCommit();
-
-    return fOk;
-}
-
-
-bool CBlockTreeDB::LoadBlockIndexGuts()
-{
-    // Get database cursor
-    Dbc* pcursor = GetCursor();
-    if (!pcursor)
-        return false;
-
-    // Load mapBlockIndex
-    unsigned int fFlags = DB_SET_RANGE;
-    loop
-    {
-        // Read next record
-        CDataStream ssKey(SER_DISK, CLIENT_VERSION);
-        if (fFlags == DB_SET_RANGE)
-            ssKey << make_pair('b', uint256(0));
-        CDataStream ssValue(SER_DISK, CLIENT_VERSION);
-        int ret = ReadAtCursor(pcursor, ssKey, ssValue, fFlags);
-        fFlags = DB_NEXT;
-        if (ret == DB_NOTFOUND)
-            break;
-        else if (ret != 0)
-            return false;
-
-        // Unserialize
-
-        try {
-        char chType;
-        ssKey >> chType;
-        if (chType == 'b' && !fRequestShutdown)
-        {
-            CDiskBlockIndex diskindex;
-            ssValue >> 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;
-
-            // Watch for genesis block
-            if (pindexGenesisBlock == NULL && diskindex.GetBlockHash() == hashGenesisBlock)
-                pindexGenesisBlock = pindexNew;
-
-            if (!pindexNew->CheckIndex())
-                return error("LoadBlockIndex() : CheckIndex failed: %s", pindexNew->ToString().c_str());
-        }
-        else
-        {
-            break; // if shutdown requested or finished loading block index
-        }
-        }    // try
-        catch (std::exception &e) {
-            return error("%s() : deserialize error", __PRETTY_FUNCTION__);
-        }
-    }
-    pcursor->close();
-
-    return true;
-}

src/txdb-bdb.h

@@ -1,61 +0,0 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2012 The Bitcoin developers
-// Distributed under the MIT/X11 software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#ifndef BITCOIN_TXDB_BDB_H
-#define BITCOIN_TXDB_BDB_H
-
-#include "db.h"
-
-/** Access to the transaction database (coins.dat) */
-class CCoinsDB : public CDB
-{
-public:
-    CCoinsDB() : CDB("coins.dat", "cr+") { }
-private:
-    CCoinsDB(const CCoinsDB&);
-    void operator=(const CCoinsDB&);
-public:
-    bool ReadCoins(uint256 hash, CCoins &coins);
-    bool WriteCoins(uint256 hash, const CCoins& coins);
-    bool HaveCoins(uint256 hash);
-    bool ReadHashBestChain(uint256& hashBestChain);
-    bool WriteHashBestChain(uint256 hashBestChain);
-};
-
-/** CCoinsView backed by a CCoinsDB */
-class CCoinsViewDB : public CCoinsView
-{
-protected:
-    CCoinsDB db;
-public:
-    CCoinsViewDB();
-
-    bool GetCoins(uint256 txid, CCoins &coins);
-    bool SetCoins(uint256 txid, const CCoins &coins);
-    bool HaveCoins(uint256 txid);
-    CBlockIndex *GetBestBlock();
-    bool SetBestBlock(CBlockIndex *pindex);
-    bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
-};
-
-/** Access to the block database (blktree.dat) */
-class CBlockTreeDB : public CDB
-{
-public:
-    CBlockTreeDB() : CDB("blktree.dat", "cr+") { }
-private:
-    CBlockTreeDB(const CBlockTreeDB&);
-    void operator=(const CBlockTreeDB&);
-public:
-    bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
-    bool ReadBestInvalidWork(CBigNum& bnBestInvalidWork);
-    bool WriteBestInvalidWork(CBigNum bnBestInvalidWork);
-    bool ReadBlockFileInfo(int nFile, CBlockFileInfo &fileinfo);
-    bool WriteBlockFileInfo(int nFile, const CBlockFileInfo &fileinfo);
-    bool ReadLastBlockFile(int &nFile);
-    bool WriteLastBlockFile(int nFile);
-    bool LoadBlockIndexGuts();
-};
-
-#endif // BITCOIN_TXDB_BDB_H

src/txdb-leveldb.h

@@ -1,47 +0,0 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2012 The Bitcoin developers
-// Distributed under the MIT/X11 software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#ifndef BITCOIN_TXDB_LEVELDB_H
-#define BITCOIN_TXDB_LEVELDB_H
-
-#include "main.h"
-#include "leveldb.h"
-
-/** CCoinsView backed by the LevelDB coin database (coins/) */
-class CCoinsViewDB : public CCoinsView
-{
-protected:
-    CLevelDB db;
-public:
-    CCoinsViewDB(bool fMemory = false);
-
-    bool GetCoins(uint256 txid, CCoins &coins);
-    bool SetCoins(uint256 txid, const CCoins &coins);
-    bool HaveCoins(uint256 txid);
-    CBlockIndex *GetBestBlock();
-    bool SetBestBlock(CBlockIndex *pindex);
-    bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
-    bool GetStats(CCoinsStats &stats);
-};
-
-/** Access to the block database (blktree/) */
-class CBlockTreeDB : public CLevelDB
-{
-public:
-    CBlockTreeDB(bool fMemory = false);
-private:
-    CBlockTreeDB(const CBlockTreeDB&);
-    void operator=(const CBlockTreeDB&);
-public:
-    bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
-    bool ReadBestInvalidWork(CBigNum& bnBestInvalidWork);
-    bool WriteBestInvalidWork(const CBigNum& bnBestInvalidWork);
-    bool ReadBlockFileInfo(int nFile, CBlockFileInfo &fileinfo);
-    bool WriteBlockFileInfo(int nFile, const CBlockFileInfo &fileinfo);
-    bool ReadLastBlockFile(int &nFile);
-    bool WriteLastBlockFile(int nFile);
-    bool LoadBlockIndexGuts();
-};
-
-#endif // BITCOIN_TXDB_LEVELDB_H

src/txdb.cpp

@@ -3,7 +3,7 @@
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include "txdb-leveldb.h"
+#include "txdb.h"
 #include "main.h"
 
 using namespace std;

src/txdb.h

@@ -2,13 +2,46 @@
 // Copyright (c) 2009-2012 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#ifndef BITCOIN_TXDB_H
+#ifndef BITCOIN_TXDB_LEVELDB_H
-#define BITCOIN_TXDB_H
+#define BITCOIN_TXDB_LEVELDB_H
 
-#ifdef USE_LEVELDB
+#include "main.h"
-#include "txdb-leveldb.h"
+#include "leveldb.h"
-#else
-#include "txdb-bdb.h"
-#endif
 
-#endif // BITCOIN_TXDB_H
+/** CCoinsView backed by the LevelDB coin database (coins/) */
+class CCoinsViewDB : public CCoinsView
+{
+protected:
+    CLevelDB db;
+public:
+    CCoinsViewDB(bool fMemory = false);
+
+    bool GetCoins(uint256 txid, CCoins &coins);
+    bool SetCoins(uint256 txid, const CCoins &coins);
+    bool HaveCoins(uint256 txid);
+    CBlockIndex *GetBestBlock();
+    bool SetBestBlock(CBlockIndex *pindex);
+    bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
+    bool GetStats(CCoinsStats &stats);
+};
+
+/** Access to the block database (blktree/) */
+class CBlockTreeDB : public CLevelDB
+{
+public:
+    CBlockTreeDB(bool fMemory = false);
+private:
+    CBlockTreeDB(const CBlockTreeDB&);
+    void operator=(const CBlockTreeDB&);
+public:
+    bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
+    bool ReadBestInvalidWork(CBigNum& bnBestInvalidWork);
+    bool WriteBestInvalidWork(const CBigNum& bnBestInvalidWork);
+    bool ReadBlockFileInfo(int nFile, CBlockFileInfo &fileinfo);
+    bool WriteBlockFileInfo(int nFile, const CBlockFileInfo &fileinfo);
+    bool ReadLastBlockFile(int &nFile);
+    bool WriteLastBlockFile(int nFile);
+    bool LoadBlockIndexGuts();
+};
+
+#endif // BITCOIN_TXDB_LEVELDB_H