X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=src%2Fkernel.h;h=e784f2a89459348e18124c565ac7270121f1efd1;hb=6f895c2539c4ddefce658bb2ec7083774bbbd5a3;hp=d657ad5efebabf2310b253d1442cf98451277ce9;hpb=74a7badde0d9ba0a888d30b46133de50a5267f61;p=novacoin.git

diff --git a/src/kernel.h b/src/kernel.h
index d657ad5..e784f2a 100644
--- a/src/kernel.h
+++ b/src/kernel.h
@@ -5,32 +5,63 @@
 #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 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_t& 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_t& 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);
+bool CheckStakeKernelHash(unsigned int nBits, const CBlock& blockFrom, uint32_t nTxPrevOffset, const CTransaction& txPrev, const COutPoint& prevout, uint32_t nTimeTx, uint256& hashProofOfStake, uint256& targetProofOfStake, bool fPrintProofOfStake=false);
+
+// Coins scanning options
+typedef struct KernelSearchSettings {
+    uint32_t nBits;           // Packed difficulty
+    uint32_t nTime;           // Basic time
+    uint32_t nOffset;         // Offset inside CoinsSet (isn't used yet)
+    uint32_t nLimit;          // Coins to scan (isn't used yet)
+    uint32_t 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_t> > > MetaMap;
+
+// Scan given coins set for kernel solution
+bool ScanForStakeKernelHash(MetaMap &mapMeta, KernelSearchSettings &settings, CoinsSet::value_type &kernelcoin, uint32_t &nTimeTx, uint32_t &nBlockTime, uint64_t &nKernelsTried, uint64_t &nCoinDaysTried);
 
 // Check kernel hash target and coinstake signature
 // Sets hashProofOfStake on success return
 bool CheckProofOfStake(const CTransaction& tx, unsigned int nBits, uint256& hashProofOfStake, uint256& targetProofOfStake);
 
-// Check whether the coinstake timestamp meets protocol
-bool CheckCoinStakeTimestamp(int64 nTimeBlock, int64 nTimeTx);
-
 // Get stake modifier checksum
-unsigned int GetStakeModifierChecksum(const CBlockIndex* pindex);
+uint32_t GetStakeModifierChecksum(const CBlockIndex* pindex);
 
 // Check stake modifier hard checkpoints
-bool CheckStakeModifierCheckpoints(int nHeight, unsigned int nStakeModifierChecksum);
+bool CheckStakeModifierCheckpoints(int nHeight, uint32_t nStakeModifierChecksum);
+
+// Get time weight using supplied timestamps
+int64_t GetWeight(int64_t nIntervalBeginning, int64_t nIntervalEnd);
 
 #endif // PPCOIN_KERNEL_H