X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=src%2Fkernel.h;h=5cfa9466b79d3fe0255ad626f1a9f8f10992d087;hb=9958f531a04f41133dfb10ff14c1422164ec1080;hp=00c7163d5b8eb3718161bb7e7d47a62d5b8fe4b7;hpb=8d43f1482a14263a76c039c227c4383580dcc1db;p=novacoin.git

diff --git a/src/kernel.h b/src/kernel.h
index 00c7163..5cfa946 100644
--- a/src/kernel.h
+++ b/src/kernel.h
@@ -5,21 +5,52 @@
 #define PPCOIN_KERNEL_H
 
 #include "main.h"
+#include "wallet.h"
+
+// ChainDB upgrade time
+extern unsigned int nModifierUpgradeTime;
 
 // MODIFIER_INTERVAL: time to elapse before new modifier is computed
-extern unsigned int nModifierInterval;
+extern const unsigned int nModifierInterval;
+
+extern bool fCoinsDataActual;
 
 // MODIFIER_INTERVAL_RATIO:
 // ratio of group interval length between the last group and the first group
 static const int MODIFIER_INTERVAL_RATIO = 3;
 
+// Whether the given block is subject to new modifier protocol
+bool IsFixedModifierInterval(unsigned int nTimeBlock);
+
 // Compute the hash modifier for proof-of-stake
-bool ComputeNextStakeModifier(const CBlockIndex* pindexPrev, uint64& nStakeModifier, bool& fGeneratedStakeModifier);
+bool ComputeNextStakeModifier(const CBlockIndex* pindexCurrent, uint64& nStakeModifier, bool& fGeneratedStakeModifier);
+
+// The stake modifier used to hash for a stake kernel is chosen as the stake
+// modifier about a selection interval later than the coin generating the kernel
+bool GetKernelStakeModifier(uint256 hashBlockFrom, uint64& nStakeModifier);
 
 // Check whether stake kernel meets hash target
 // Sets hashProofOfStake on success return
 bool CheckStakeKernelHash(unsigned int nBits, const CBlock& blockFrom, unsigned int nTxPrevOffset, const CTransaction& txPrev, const COutPoint& prevout, unsigned int nTimeTx, uint256& hashProofOfStake, uint256& targetProofOfStake, bool fPrintProofOfStake=false);
 
+// Coins scanning options
+typedef struct KernelSearchSettings {
+    unsigned int nBits;           // Packed difficulty
+    unsigned int nTime;           // Basic time
+    unsigned int nOffset;         // Offset inside CoinsSet (isn't used yet)
+    unsigned int nLimit;          // Coins to scan (isn't used yet)
+    unsigned int nSearchInterval; // Number of seconds allowed to go into the past
+} KernelSearchSettings;
+
+typedef std::set<std::pair<const CWalletTx*,unsigned int> > CoinsSet;
+
+// Preloaded coins metadata
+// txid => ((txindex, (tx, vout.n)), (block, modifier))
+typedef std::map<std::pair<uint256, unsigned int>, std::pair<std::pair<CTxIndex, std::pair<const CWalletTx*,unsigned int> >, std::pair<CBlock, uint64> > > MetaMap;
+
+// Scan given coins set for kernel solution
+bool ScanForStakeKernelHash(MetaMap &mapMeta, KernelSearchSettings &settings, CoinsSet::value_type &kernelcoin, unsigned int &nTimeTx, unsigned int &nBlockTime);
+
 // Check kernel hash target and coinstake signature
 // Sets hashProofOfStake on success return
 bool CheckProofOfStake(const CTransaction& tx, unsigned int nBits, uint256& hashProofOfStake, uint256& targetProofOfStake);