Cache scrypt hashes on disk

[novacoin.git] / src / main.h

diff --git a/src/main.h b/src/main.h
index ed202c4..4955be9 100644 (file)
--- a/src/main.h
+++ b/src/main.h
@@ -88,7 +88,7 @@ extern std::map<uint256, CBlock*> mapOrphanBlocks;
 // Settings
 extern int64 nTransactionFee;
 extern int64 nMinimumInputValue;
-extern bool fStakeUsePooledKeys;
+extern bool fUseFastIndex;
 extern unsigned int nDerivationMethodIndex;
 
 // Minimum disk space required - used in CheckDiskSpace()
@@ -1349,6 +1349,9 @@ public:
 /** Used to marshal pointers into hashes for db storage. */
 class CDiskBlockIndex : public CBlockIndex
 {
+private:
+    uint256 blockHash;
+
 public:
     uint256 hashPrev;
     uint256 hashNext;
@@ -1357,6 +1360,7 @@ public:
     {
         hashPrev = 0;
         hashNext = 0;
+        blockHash = 0;
     }
 
     explicit CDiskBlockIndex(CBlockIndex* pindex) : CBlockIndex(*pindex)
@@ -1398,10 +1402,14 @@ public:
         READWRITE(nTime);
         READWRITE(nBits);
         READWRITE(nNonce);
+        READWRITE(blockHash);
     )
 
     uint256 GetBlockHash() const
     {
+        if (fUseFastIndex && (nTime < GetAdjustedTime() - 12 * nMaxClockDrift) && blockHash != 0)
+            return blockHash;
+
         CBlock block;
         block.nVersion        = nVersion;
         block.hashPrevBlock   = hashPrev;
@@ -1409,9 +1417,11 @@ public:
         block.nTime           = nTime;
         block.nBits           = nBits;
         block.nNonce          = nNonce;
-        return block.GetHash();
-    }
 
+        const_cast<CDiskBlockIndex*>(this)->blockHash = block.GetHash();
+
+        return blockHash;
+    }
 
     std::string ToString() const
     {