BN_zero -> BN_set_word
[novacoin.git] / src / miner.cpp
index 41a4303..2712207 100644 (file)
@@ -7,6 +7,7 @@
 #include "txdb.h"
 #include "miner.h"
 #include "kernel.h"
+#include "kernel_worker.h"
 
 using namespace std;
 
@@ -69,14 +70,6 @@ public:
         ptx = ptxIn;
         dPriority = dFeePerKb = 0;
     }
-
-    void print() const
-    {
-        printf("COrphan(hash=%s, dPriority=%.1f, dFeePerKb=%.1f)\n",
-               ptx->GetHash().ToString().substr(0,10).c_str(), dPriority, dFeePerKb);
-        BOOST_FOREACH(uint256 hash, setDependsOn)
-            printf("   setDependsOn %s\n", hash.ToString().substr(0,10).c_str());
-    }
 };
 
 
@@ -109,12 +102,12 @@ public:
 };
 
 // CreateNewBlock: create new block (without proof-of-work/with provided coinstake)
-CBlock* CreateNewBlock(CWallet* pwallet, CTransaction *txCoinStake)
+std::shared_ptr<CBlock> CreateNewBlock(CWallet* pwallet, CTransaction *txCoinStake)
 {
     bool fProofOfStake = txCoinStake != NULL;
 
     // Create new block
-    auto_ptr<CBlock> pblock(new CBlock());
+    shared_ptr<CBlock> pblock(new CBlock());
     if (!pblock.get())
         return NULL;
 
@@ -146,18 +139,18 @@ CBlock* CreateNewBlock(CWallet* pwallet, CTransaction *txCoinStake)
     }
 
     // Largest block you're willing to create:
-    unsigned int nBlockMaxSize = GetArg("-blockmaxsize", MAX_BLOCK_SIZE_GEN/2);
+    unsigned int nBlockMaxSize = GetArgUInt("-blockmaxsize", MAX_BLOCK_SIZE_GEN/2);
     // Limit to betweeen 1K and MAX_BLOCK_SIZE-1K for sanity:
-    nBlockMaxSize = std::max((unsigned int)1000, std::min((unsigned int)(MAX_BLOCK_SIZE-1000), nBlockMaxSize));
+    nBlockMaxSize = std::max(1000u, std::min(MAX_BLOCK_SIZE-1000u, nBlockMaxSize));
 
     // How much of the block should be dedicated to high-priority transactions,
     // included regardless of the fees they pay
-    unsigned int nBlockPrioritySize = GetArg("-blockprioritysize", 27000);
+    unsigned int nBlockPrioritySize = GetArgUInt("-blockprioritysize", 27000);
     nBlockPrioritySize = std::min(nBlockMaxSize, nBlockPrioritySize);
 
     // Minimum block size you want to create; block will be filled with free transactions
     // until there are no more or the block reaches this size:
-    unsigned int nBlockMinSize = GetArg("-blockminsize", 0);
+    unsigned int nBlockMinSize = GetArgUInt("-blockminsize", 0);
     nBlockMinSize = std::min(nBlockMaxSize, nBlockMinSize);
 
     // Fee-per-kilobyte amount considered the same as "free"
@@ -384,11 +377,11 @@ CBlock* CreateNewBlock(CWallet* pwallet, CTransaction *txCoinStake)
         pblock->nNonce         = 0;
     }
 
-    return pblock.release();
+    return pblock;
 }
 
 
-void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
+void IncrementExtraNonce(shared_ptr<CBlock>& pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
 {
     // Update nExtraNonce
     static uint256 hashPrevBlock;
@@ -407,7 +400,7 @@ void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int&
 }
 
 
-void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1)
+void FormatHashBuffers(const shared_ptr<CBlock>& pblock, char* pmidstate, char* pdata, char* phash1)
 {
     //
     // Pre-build hash buffers
@@ -453,7 +446,7 @@ void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash
 }
 
 
-bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey)
+bool CheckWork(const std::shared_ptr<CBlock>& pblock, CWallet& wallet, CReserveKey& reservekey)
 {
     uint256 hashBlock = pblock->GetHash();
     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
@@ -485,14 +478,14 @@ bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey)
         }
 
         // Process this block the same as if we had received it from another node
-        if (!ProcessBlock(NULL, pblock))
+        if (!ProcessBlock(NULL, pblock.get()))
             return error("CheckWork() : ProcessBlock, block not accepted");
     }
 
     return true;
 }
 
-bool CheckStake(CBlock* pblock, CWallet& wallet)
+bool CheckStake(const std::shared_ptr<CBlock>& pblock, CWallet& wallet)
 {
     uint256 proofHash = 0, hashTarget = 0;
     uint256 hashBlock = pblock->GetHash();
@@ -522,7 +515,7 @@ bool CheckStake(CBlock* pblock, CWallet& wallet)
         }
 
         // Process this block the same as if we had received it from another node
-        if (!ProcessBlock(NULL, pblock))
+        if (!ProcessBlock(NULL, pblock.get()))
             return error("CheckStake() : ProcessBlock, block not accepted");
     }
 
@@ -530,10 +523,10 @@ bool CheckStake(CBlock* pblock, CWallet& wallet)
 }
 
 // Precalculated SHA256 contexts and metadata
-// (txid, vout.n) => (SHA256_CTX, (tx.nTime, nAmount))
-typedef std::map<std::pair<uint256, unsigned int>, std::pair<SHA256_CTX, std::pair<uint32_t, uint64_t> > > MidstateMap;
+// (txid, vout.n) => (kernel, (tx.nTime, nAmount))
+typedef std::map<std::pair<uint256, unsigned int>, std::pair<std::vector<unsigned char>, std::pair<uint32_t, uint64_t> > > MidstateMap;
 
-// Fill the inputs map with precalculated states and metadata
+// Fill the inputs map with precalculated contexts and metadata
 bool FillMap(CWallet *pwallet, uint32_t nUpperTime, MidstateMap &inputsMap)
 {
     // Choose coins to use
@@ -589,22 +582,24 @@ bool FillMap(CWallet *pwallet, uint32_t nUpperTime, MidstateMap &inputsMap)
             if (nStakeMinAge + block.nTime > nTime - nMaxStakeSearchInterval)
                 continue;
 
+            // Get stake modifier
             uint64_t nStakeModifier = 0;
             if (!GetKernelStakeModifier(block.GetHash(), nStakeModifier))
                 continue;
 
-            SHA256_CTX ctx;
-            // Calculate midstate using (modifier, block time, tx offset, tx time, output number)
-            GetKernelMidstate(nStakeModifier, block.nTime, txindex.pos.nTxPos - txindex.pos.nBlockPos, pcoin->first->nTime, pcoin->second, ctx);
+            // Build static part of kernel
+            CDataStream ssKernel(SER_GETHASH, 0);
+            ssKernel << nStakeModifier;
+            ssKernel << block.nTime << (txindex.pos.nTxPos - txindex.pos.nBlockPos) << pcoin->first->nTime << pcoin->second;
 
-            // (txid, vout.n) => (SHA256_CTX, (tx.nTime, nAmount))
-            inputsMap[key] = make_pair(ctx, make_pair(pcoin->first->nTime, pcoin->first->vout[pcoin->second].nValue));
+            // (txid, vout.n) => (kernel, (tx.nTime, nAmount))
+            inputsMap[key] = make_pair(std::vector<unsigned char>(ssKernel.begin(), ssKernel.end()), make_pair(pcoin->first->nTime, pcoin->first->vout[pcoin->second].nValue));
         }
 
         nStakeInputsMapSize = inputsMap.size();
 
         if (fDebug)
-            printf("Stake miner: map of %" PRIu64 " precalculated contexts has been created\n", nStakeInputsMapSize);
+            printf("FillMap() : Map of %" PRIu64 " precalculated contexts has been created by stake miner\n", nStakeInputsMapSize);
     }
 
     return true;
@@ -624,13 +619,13 @@ bool ScanMap(const MidstateMap &inputsMap, uint32_t nBits, MidstateMap::key_type
         interval.first = nSearchTime;
         interval.second = nSearchTime - min(nSearchTime-nLastCoinStakeSearchTime, nMaxStakeSearchInterval);
 
-        // (txid, nout) => (SHA256_CTX, (tx.nTime, nAmount))
+        // (txid, nout) => (kernel, (tx.nTime, nAmount))
         for(MidstateMap::const_iterator input = inputsMap.begin(); input != inputsMap.end(); input++)
         {
-            SHA256_CTX ctx = input->second.first;
+            unsigned char *kernel = (unsigned char *) &input->second.first[0];
 
             // scan(State, Bits, Time, Amount, ...)
-            if (ScanMidstateBackward(ctx, nBits, input->second.second.first, input->second.second.second, interval, solution))
+            if (ScanKernelBackward(kernel, nBits, input->second.second.first, input->second.second.second, interval, solution))
             {
                 // Solution found
                 LuckyInput = input->first; // (txid, nout)
@@ -730,8 +725,7 @@ void ThreadStakeMiner(void* parg)
                 }
 
                 // Now we have new coinstake, it's time to create the block ...
-                CBlock* pblock;
-                pblock = CreateNewBlock(pwallet, &txCoinStake);
+                std::shared_ptr<CBlock> pblock = CreateNewBlock(pwallet, &txCoinStake);
                 if (!pblock)
                 {
                     string strMessage = _("Warning: Unable to allocate memory for the new block object. Mining thread has been stopped.");