Clean issues which some LLVM configurations don't like

[novacoin.git] / src / kernel.cpp

diff --git a/src/kernel.cpp b/src/kernel.cpp
index b473249..3e7ec42 100644 (file)
--- a/src/kernel.cpp
+++ b/src/kernel.cpp
@@ -7,10 +7,11 @@
 #include "kernel.h"
 #include "txdb.h"
 
+extern unsigned int nStakeMaxAge;
+extern unsigned int nStakeTargetSpacing;
+
 using namespace std;
 
-extern int nStakeMaxAge;
-extern int nStakeTargetSpacing;
 
 // Protocol switch time for fixed kernel modifier interval
 unsigned int nModifierSwitchTime  = 1413763200;    // Mon, 20 Oct 2014 00:00:00 GMT
@@ -168,7 +169,7 @@ bool ComputeNextStakeModifier(const CBlockIndex* pindexCurrent, uint64& nStakeMo
         return error("ComputeNextStakeModifier: unable to get last modifier");
     if (fDebug)
     {
-        printf("ComputeNextStakeModifier: prev modifier=0x%016"PRI64x" time=%s epoch=%u\n", nStakeModifier, DateTimeStrFormat(nModifierTime).c_str(), (unsigned int)nModifierTime);
+        printf("ComputeNextStakeModifier: prev modifier=0x%016" PRI64x " time=%s epoch=%u\n", nStakeModifier, DateTimeStrFormat(nModifierTime).c_str(), (unsigned int)nModifierTime);
     }
     if (nModifierTime / nModifierInterval >= pindexPrev->GetBlockTime() / nModifierInterval)
     {
@@ -256,7 +257,7 @@ bool ComputeNextStakeModifier(const CBlockIndex* pindexCurrent, uint64& nStakeMo
     }
     if (fDebug)
     {
-        printf("ComputeNextStakeModifier: new modifier=0x%016"PRI64x" time=%s\n", nStakeModifierNew, DateTimeStrFormat(pindexPrev->GetBlockTime()).c_str());
+        printf("ComputeNextStakeModifier: new modifier=0x%016" PRI64x " time=%s\n", nStakeModifierNew, DateTimeStrFormat(pindexPrev->GetBlockTime()).c_str());
     }
 
     nStakeModifier = nStakeModifierNew;
@@ -298,6 +299,15 @@ static bool GetKernelStakeModifier(uint256 hashBlockFrom, uint64& nStakeModifier
     return true;
 }
 
+bool GetKernelStakeModifier(uint256 hashBlockFrom, uint64& nStakeModifier)
+{
+    int nStakeModifierHeight;
+    int64 nStakeModifierTime;
+
+    return GetKernelStakeModifier(hashBlockFrom, nStakeModifier, nStakeModifierHeight, nStakeModifierTime, false);
+}
+
+
 // ppcoin kernel protocol
 // coinstake must meet hash target according to the protocol:
 // kernel (input 0) must meet the formula
@@ -351,12 +361,12 @@ bool CheckStakeKernelHash(unsigned int nBits, const CBlock& blockFrom, unsigned
     hashProofOfStake = Hash(ss.begin(), ss.end());
     if (fPrintProofOfStake)
     {
-        printf("CheckStakeKernelHash() : using modifier 0x%016"PRI64x" at height=%d timestamp=%s for block from height=%d timestamp=%s\n",
+        printf("CheckStakeKernelHash() : using modifier 0x%016" PRI64x " at height=%d timestamp=%s for block from height=%d timestamp=%s\n",
             nStakeModifier, nStakeModifierHeight,
             DateTimeStrFormat(nStakeModifierTime).c_str(),
             mapBlockIndex[hashBlockFrom]->nHeight,
             DateTimeStrFormat(blockFrom.GetBlockTime()).c_str());
-        printf("CheckStakeKernelHash() : check modifier=0x%016"PRI64x" nTimeBlockFrom=%u nTxPrevOffset=%u nTimeTxPrev=%u nPrevout=%u nTimeTx=%u hashProof=%s\n",
+        printf("CheckStakeKernelHash() : check modifier=0x%016" PRI64x " nTimeBlockFrom=%u nTxPrevOffset=%u nTimeTxPrev=%u nPrevout=%u nTimeTx=%u hashProof=%s\n",
             nStakeModifier,
             nTimeBlockFrom, nTxPrevOffset, txPrev.nTime, prevout.n, nTimeTx,
             hashProofOfStake.ToString().c_str());
@@ -367,12 +377,12 @@ bool CheckStakeKernelHash(unsigned int nBits, const CBlock& blockFrom, unsigned
         return false;
     if (fDebug && !fPrintProofOfStake)
     {
-        printf("CheckStakeKernelHash() : using modifier 0x%016"PRI64x" at height=%d timestamp=%s for block from height=%d timestamp=%s\n",
+        printf("CheckStakeKernelHash() : using modifier 0x%016" PRI64x " at height=%d timestamp=%s for block from height=%d timestamp=%s\n",
             nStakeModifier, nStakeModifierHeight, 
             DateTimeStrFormat(nStakeModifierTime).c_str(),
             mapBlockIndex[hashBlockFrom]->nHeight,
             DateTimeStrFormat(blockFrom.GetBlockTime()).c_str());
-        printf("CheckStakeKernelHash() : pass modifier=0x%016"PRI64x" nTimeBlockFrom=%u nTxPrevOffset=%u nTimeTxPrev=%u nPrevout=%u nTimeTx=%u hashProof=%s\n",
+        printf("CheckStakeKernelHash() : pass modifier=0x%016" PRI64x " nTimeBlockFrom=%u nTxPrevOffset=%u nTimeTxPrev=%u nPrevout=%u nTimeTx=%u hashProof=%s\n",
             nStakeModifier,
             nTimeBlockFrom, nTxPrevOffset, txPrev.nTime, prevout.n, nTimeTx,
             hashProofOfStake.ToString().c_str());
@@ -380,6 +390,81 @@ bool CheckStakeKernelHash(unsigned int nBits, const CBlock& blockFrom, unsigned
     return true;
 }
 
+// Scan given coins set for kernel solution
+bool ScanForStakeKernelHash(MetaMap &mapMeta, KernelSearchSettings &settings, CoinsSet::value_type &kernelcoin, unsigned int &nTimeTx, unsigned int &nBlockTime, uint64 &nKernelsTried, uint64 &nCoinDaysTried)
+{
+    uint256 hashProofOfStake = 0;
+
+    // (txid, vout.n) => ((txindex, (tx, vout.n)), (block, modifier))
+    for(MetaMap::const_iterator meta_item = mapMeta.begin(); meta_item != mapMeta.end(); meta_item++)
+    {
+        if (!fCoinsDataActual)
+            break;
+
+        CTxIndex txindex = (*meta_item).second.first.first;
+        CBlock block = (*meta_item).second.second.first;
+        uint64 nStakeModifier = (*meta_item).second.second.second;
+
+        // Get coin
+        CoinsSet::value_type pcoin = meta_item->second.first.second;
+
+        static int nMaxStakeSearchInterval = 60;
+
+        // only count coins meeting min age requirement
+        if (nStakeMinAge + block.nTime > settings.nTime - nMaxStakeSearchInterval)
+            continue;
+
+        // Transaction offset inside block
+        unsigned int nTxOffset = txindex.pos.nTxPos - txindex.pos.nBlockPos;
+
+        // Current timestamp scanning interval
+        unsigned int nCurrentSearchInterval = min((int64)settings.nSearchInterval, (int64)nMaxStakeSearchInterval);
+
+        nBlockTime = block.nTime;
+        CBigNum bnTargetPerCoinDay;
+        bnTargetPerCoinDay.SetCompact(settings.nBits);
+        int64 nValueIn = pcoin.first->vout[pcoin.second].nValue;
+
+        // Search backward in time from the given timestamp 
+        // Search nSearchInterval seconds back up to nMaxStakeSearchInterval
+        // Stopping search in case of shutting down or cache invalidation
+        for (unsigned int n=0; n<nCurrentSearchInterval && fCoinsDataActual && !fShutdown; n++)
+        {
+            nTimeTx = settings.nTime - n;
+            CBigNum bnCoinDayWeight = CBigNum(nValueIn) * GetWeight((int64)pcoin.first->nTime, (int64)nTimeTx) / COIN / (24 * 60 * 60);
+            CBigNum bnTargetProofOfStake = bnCoinDayWeight * bnTargetPerCoinDay;
+
+            // Build kernel
+            CDataStream ss(SER_GETHASH, 0);
+            ss << nStakeModifier;
+            ss << nBlockTime << nTxOffset << pcoin.first->nTime << pcoin.second << nTimeTx;
+
+            // Calculate kernel hash
+            hashProofOfStake = Hash(ss.begin(), ss.end());
+
+            // Update statistics
+            nKernelsTried += 1;
+            nCoinDaysTried += bnCoinDayWeight.getuint64();
+
+            if (bnTargetProofOfStake >= CBigNum(hashProofOfStake))
+            {
+                if (fDebug)
+                    printf("nStakeModifier=0x%016" PRI64x ", nBlockTime=%u nTxOffset=%u nTxPrevTime=%u nVout=%u nTimeTx=%u hashProofOfStake=%s Success=true\n",
+                        nStakeModifier, nBlockTime, nTxOffset, pcoin.first->nTime, pcoin.second, nTimeTx, hashProofOfStake.GetHex().c_str());
+
+                kernelcoin = pcoin;
+                return true;
+            }
+
+            if (fDebug)
+                printf("nStakeModifier=0x%016" PRI64x ", nBlockTime=%u nTxOffset=%u nTxPrevTime=%u nTxNumber=%u nTimeTx=%u hashProofOfStake=%s Success=false\n",
+                    nStakeModifier, nBlockTime, nTxOffset, pcoin.first->nTime, pcoin.second, nTimeTx, hashProofOfStake.GetHex().c_str());
+        }
+    }
+
+    return false;
+}
+
 // Check kernel hash target and coinstake signature
 bool CheckProofOfStake(const CTransaction& tx, unsigned int nBits, uint256& hashProofOfStake, uint256& targetProofOfStake)
 {