Add -reindex, to perform in-place reindexing of block chain files

Flushes the blktree/ and coins/ databases, and reindexes the
block chain files, as if their contents was loaded via -loadblock.

Based on earlier work by Jeff Garzik.

1 files changed, 14 insertions, 2 deletions

diff --git a/src/txdb.cpp b/src/txdb.cpp
index d9972d5b06..93c5f23d8b 100644
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -19,7 +19,7 @@ void static BatchWriteHashBestChain(CLevelDBBatch &batch, const uint256 &hash) {
     batch.Write('B', hash);
 }
 
-CCoinsViewDB::CCoinsViewDB(size_t nCacheSize, bool fMemory) : db(GetDataDir() / "coins", nCacheSize, fMemory) {
+CCoinsViewDB::CCoinsViewDB(size_t nCacheSize, bool fMemory, bool fWipe) : db(GetDataDir() / "coins", nCacheSize, fMemory, fWipe) {
 }
 
 bool CCoinsViewDB::GetCoins(uint256 txid, CCoins &coins) { 
@@ -64,7 +64,7 @@ bool CCoinsViewDB::BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockI
     return db.WriteBatch(batch);
 }
 
-CBlockTreeDB::CBlockTreeDB(size_t nCacheSize, bool fMemory) : CLevelDB(GetDataDir() / "blktree", nCacheSize, fMemory) {
+CBlockTreeDB::CBlockTreeDB(size_t nCacheSize, bool fMemory, bool fWipe) : CLevelDB(GetDataDir() / "blktree", nCacheSize, fMemory, fWipe) {
 }
 
 bool CBlockTreeDB::WriteBlockIndex(const CDiskBlockIndex& blockindex)
@@ -94,6 +94,18 @@ bool CBlockTreeDB::WriteLastBlockFile(int nFile) {
     return Write('l', nFile);
 }
 
+bool CBlockTreeDB::WriteReindexing(bool fReindexing) {
+    if (fReindexing)
+        return Write('R', '1');
+    else
+        return Erase('R');
+}
+
+bool CBlockTreeDB::ReadReindexing(bool &fReindexing) {
+    fReindexing = Exists('R');
+    return true;
+}
+
 bool CBlockTreeDB::ReadLastBlockFile(int &nFile) {
     return Read('l', nFile);
 }