LCOV - code coverage report
Current view: top level - src - miner.cpp (source / functions) Hit Total Coverage
Test: total_coverage.info Lines: 10 164 6.1 %
Date: 2025-02-23 09:33:43 Functions: 2 9 22.2 %

          Line data    Source code
       1             : // Copyright (c) 2009-2010 Satoshi Nakamoto
       2             : // Copyright (c) 2009-2014 The Bitcoin developers
       3             : // Copyright (c) 2014-2015 The Dash developers
       4             : // Copyright (c) 2011-2013 The PPCoin developers
       5             : // Copyright (c) 2013-2014 The NovaCoin Developers
       6             : // Copyright (c) 2014-2018 The BlackCoin Developers
       7             : // Copyright (c) 2015-2021 The PIVX Core developers
       8             : // Distributed under the MIT/X11 software license, see the accompanying
       9             : // file COPYING or https://www.opensource.org/licenses/mit-license.php.
      10             : 
      11             : #include "miner.h"
      12             : 
      13             : #include "amount.h"
      14             : #include "blockassembler.h"
      15             : #include "consensus/params.h"
      16             : #include "masternode-sync.h"
      17             : #include "net.h"
      18             : #include "policy/feerate.h"
      19             : #include "primitives/block.h"
      20             : #include "primitives/transaction.h"
      21             : #include "timedata.h"
      22             : #include "util/blockstatecatcher.h"
      23             : #include "util/system.h"
      24             : #include "utilmoneystr.h"
      25             : #ifdef ENABLE_WALLET
      26             : #include "wallet/wallet.h"
      27             : #endif
      28             : #include "invalid.h"
      29             : #include "policy/policy.h"
      30             : 
      31             : #include <boost/thread.hpp>
      32             : 
      33             : #ifdef ENABLE_WALLET
      34             : //////////////////////////////////////////////////////////////////////////////
      35             : //
      36             : // Internal miner
      37             : //
      38             : double dHashesPerSec = 0.0;
      39             : int64_t nHPSTimerStart = 0;
      40             : 
      41           0 : std::unique_ptr<CBlockTemplate> CreateNewBlockWithKey(std::unique_ptr<CReserveKey>& reservekey, CWallet* pwallet)
      42             : {
      43           0 :     CPubKey pubkey;
      44           0 :     if (!reservekey->GetReservedKey(pubkey)) return nullptr;
      45           0 :     return CreateNewBlockWithScript(GetScriptForDestination(pubkey.GetID()), pwallet);
      46             : }
      47             : 
      48       10606 : std::unique_ptr<CBlockTemplate> CreateNewBlockWithScript(const CScript& coinbaseScript, CWallet* pwallet)
      49             : {
      50       10606 :     const int nHeightNext = chainActive.Tip()->nHeight + 1;
      51             : 
      52             :     // If we're building a late PoW block, don't continue
      53             :     // PoS blocks are built directly with CreateNewBlock
      54       10606 :     if (Params().GetConsensus().NetworkUpgradeActive(nHeightNext, Consensus::UPGRADE_POS)) {
      55           0 :         LogPrintf("%s: Aborting PoW block creation during PoS phase\n", __func__);
      56             :         // sleep 1/2 a block time so we don't go into a tight loop.
      57           0 :         MilliSleep((Params().GetConsensus().nTargetSpacing * 1000) >> 1);
      58       10606 :         return nullptr;
      59             :     }
      60             : 
      61       21212 :     return BlockAssembler(Params(), DEFAULT_PRINTPRIORITY).CreateNewBlock(coinbaseScript, pwallet, false);
      62             : }
      63             : 
      64           0 : bool ProcessBlockFound(const std::shared_ptr<const CBlock>& pblock, CWallet& wallet, std::unique_ptr<CReserveKey>& reservekey)
      65             : {
      66           0 :     LogPrintf("%s\n", pblock->ToString());
      67           0 :     LogPrintf("generated %s\n", FormatMoney(pblock->vtx[0]->vout[0].nValue));
      68             : 
      69             :     // Found a solution
      70           0 :     {
      71           0 :         WAIT_LOCK(g_best_block_mutex, lock);
      72           0 :         if (pblock->hashPrevBlock != g_best_block)
      73           0 :             return error("PIVXMiner : generated block is stale");
      74             :     }
      75             : 
      76             :     // Remove key from key pool
      77           0 :     if (reservekey)
      78           0 :         reservekey->KeepKey();
      79             : 
      80             :     // Process this block the same as if we had received it from another node
      81           0 :     BlockStateCatcherWrapper sc(pblock->GetHash());
      82           0 :     sc.registerEvent();
      83           0 :     bool res = ProcessNewBlock(pblock, nullptr);
      84           0 :     if (!res || sc.get().stateErrorFound()) {
      85           0 :         return error("PIVXMiner : ProcessNewBlock, block not accepted");
      86             :     }
      87             : 
      88           0 :     g_connman->ForEachNode([&pblock](CNode* node)
      89             :     {
      90           0 :         node->PushInventory(CInv(MSG_BLOCK, pblock->GetHash()));
      91           0 :     });
      92             : 
      93           0 :     return true;
      94             : }
      95             : 
      96             : bool fGenerateBitcoins = false;
      97             : bool fStakeableCoins = false;
      98             : 
      99           0 : void CheckForCoins(CWallet* pwallet, std::vector<CStakeableOutput>* availableCoins)
     100             : {
     101           0 :     if (!pwallet || !pwallet->pStakerStatus)
     102             :         return;
     103             : 
     104             :     // control the amount of times the client will check for mintable coins (every block)
     105           0 :     {
     106           0 :         WAIT_LOCK(g_best_block_mutex, lock);
     107           0 :         if (g_best_block == pwallet->pStakerStatus->GetLastHash())
     108           0 :             return;
     109             :     }
     110           0 :     fStakeableCoins = pwallet->StakeableCoins(availableCoins);
     111             : }
     112             : 
     113           0 : void BitcoinMiner(CWallet* pwallet, bool fProofOfStake)
     114             : {
     115           0 :     LogPrintf("PIVXMiner started\n");
     116           0 :     SetThreadPriority(THREAD_PRIORITY_LOWEST);
     117           0 :     util::ThreadRename("pivx-miner");
     118           0 :     const Consensus::Params& consensus = Params().GetConsensus();
     119           0 :     const int64_t nSpacingMillis = consensus.nTargetSpacing * 1000;
     120             : 
     121             :     // Each thread has its own key and counter
     122           0 :     std::unique_ptr<CReserveKey> pReservekey = fProofOfStake ? nullptr : std::make_unique<CReserveKey>(pwallet);
     123             : 
     124             :     // Available UTXO set
     125           0 :     std::vector<CStakeableOutput> availableCoins;
     126           0 :     unsigned int nExtraNonce = 0;
     127             : 
     128           0 :     while (fGenerateBitcoins || fProofOfStake) {
     129           0 :         CBlockIndex* pindexPrev = GetChainTip();
     130           0 :         if (!pindexPrev) {
     131           0 :             MilliSleep(nSpacingMillis);       // sleep a block
     132           0 :             continue;
     133             :         }
     134           0 :         if (fProofOfStake) {
     135           0 :             if (!consensus.NetworkUpgradeActive(pindexPrev->nHeight + 1, Consensus::UPGRADE_POS)) {
     136             :                 // The last PoW block hasn't even been mined yet.
     137           0 :                 MilliSleep(nSpacingMillis);       // sleep a block
     138           0 :                 continue;
     139             :             }
     140             : 
     141             :             // update fStakeableCoins
     142           0 :             CheckForCoins(pwallet, &availableCoins);
     143             : 
     144           0 :             while ((g_connman && g_connman->GetNodeCount(CConnman::CONNECTIONS_ALL) == 0 && Params().MiningRequiresPeers())
     145           0 :                     || pwallet->IsLocked() || !fStakeableCoins || masternodeSync.NotCompleted()) {
     146           0 :                 MilliSleep(5000);
     147             :                 // Do another check here to ensure fStakeableCoins is updated
     148           0 :                 if (!fStakeableCoins) CheckForCoins(pwallet, &availableCoins);
     149             :             }
     150             : 
     151             :             //search our map of hashed blocks, see if bestblock has been hashed yet
     152           0 :             if (pwallet->pStakerStatus &&
     153           0 :                     pwallet->pStakerStatus->GetLastHash() == pindexPrev->GetBlockHash() &&
     154           0 :                     pwallet->pStakerStatus->GetLastTime() >= GetCurrentTimeSlot()) {
     155           0 :                 MilliSleep(2000);
     156           0 :                 continue;
     157             :             }
     158             : 
     159           0 :         } else if (pindexPrev->nHeight > 6 && consensus.NetworkUpgradeActive(pindexPrev->nHeight - 6, Consensus::UPGRADE_POS)) {
     160             :             // Late PoW: run for a little while longer, just in case there is a rewind on the chain.
     161           0 :             LogPrintf("%s: Exiting PoW Mining Thread at height: %d\n", __func__, pindexPrev->nHeight);
     162           0 :             return;
     163             :        }
     164             : 
     165             :         //
     166             :         // Create new block
     167             :         //
     168           0 :         unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
     169             : 
     170           0 :         std::unique_ptr<CBlockTemplate> pblocktemplate((fProofOfStake ?
     171           0 :                                                         BlockAssembler(Params(), DEFAULT_PRINTPRIORITY).CreateNewBlock(CScript(), pwallet, true, &availableCoins) :
     172           0 :                                                         CreateNewBlockWithKey(pReservekey, pwallet)));
     173           0 :         if (!pblocktemplate) continue;
     174           0 :         std::shared_ptr<CBlock> pblock = std::make_shared<CBlock>(pblocktemplate->block);
     175             : 
     176             :         // POS - block found: process it
     177           0 :         if (fProofOfStake) {
     178           0 :             LogPrintf("%s : proof-of-stake block was signed %s \n", __func__, pblock->GetHash().ToString().c_str());
     179           0 :             SetThreadPriority(THREAD_PRIORITY_NORMAL);
     180           0 :             if (!ProcessBlockFound(pblock, *pwallet, pReservekey)) {
     181           0 :                 LogPrintf("%s: New block orphaned\n", __func__);
     182           0 :                 continue;
     183             :             }
     184           0 :             SetThreadPriority(THREAD_PRIORITY_LOWEST);
     185           0 :             continue;
     186             :         }
     187             : 
     188             :         // POW - miner main
     189           0 :         IncrementExtraNonce(pblock, pindexPrev->nHeight + 1, nExtraNonce);
     190             : 
     191           0 :         LogPrintf("Running PIVXMiner with %u transactions in block (%u bytes)\n", pblock->vtx.size(),
     192           0 :             ::GetSerializeSize(*pblock, PROTOCOL_VERSION));
     193             : 
     194             :         //
     195             :         // Search
     196             :         //
     197           0 :         int64_t nStart = GetTime();
     198           0 :         arith_uint256& hashTarget = arith_uint256().SetCompact(pblock->nBits);
     199           0 :         while (true) {
     200           0 :             unsigned int nHashesDone = 0;
     201             : 
     202           0 :             arith_uint256 hash;
     203           0 :             while (true) {
     204           0 :                 hash = UintToArith256(pblock->GetHash());
     205           0 :                 if (hash <= hashTarget) {
     206             :                     // Found a solution
     207           0 :                     SetThreadPriority(THREAD_PRIORITY_NORMAL);
     208           0 :                     LogPrintf("%s:\n", __func__);
     209           0 :                     LogPrintf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", hash.GetHex(), hashTarget.GetHex());
     210           0 :                     ProcessBlockFound(pblock, *pwallet, pReservekey);
     211           0 :                     SetThreadPriority(THREAD_PRIORITY_LOWEST);
     212             : 
     213             :                     // In regression test mode, stop mining after a block is found. This
     214             :                     // allows developers to controllably generate a block on demand.
     215           0 :                     if (Params().IsRegTestNet())
     216           0 :                         throw boost::thread_interrupted();
     217             : 
     218             :                     break;
     219             :                 }
     220           0 :                 pblock->nNonce += 1;
     221           0 :                 nHashesDone += 1;
     222           0 :                 if ((pblock->nNonce & 0xFF) == 0)
     223             :                     break;
     224             :             }
     225             : 
     226             :             // Meter hashes/sec
     227           0 :             static int64_t nHashCounter;
     228           0 :             if (nHPSTimerStart == 0) {
     229           0 :                 nHPSTimerStart = GetTimeMillis();
     230           0 :                 nHashCounter = 0;
     231             :             } else
     232           0 :                 nHashCounter += nHashesDone;
     233           0 :             if (GetTimeMillis() - nHPSTimerStart > 4000) {
     234           0 :                 static RecursiveMutex cs;
     235           0 :                 {
     236           0 :                     LOCK(cs);
     237           0 :                     if (GetTimeMillis() - nHPSTimerStart > 4000) {
     238           0 :                         dHashesPerSec = 1000.0 * nHashCounter / (GetTimeMillis() - nHPSTimerStart);
     239           0 :                         nHPSTimerStart = GetTimeMillis();
     240           0 :                         nHashCounter = 0;
     241           0 :                         static int64_t nLogTime;
     242           0 :                         if (GetTime() - nLogTime > 30 * 60) {
     243           0 :                             nLogTime = GetTime();
     244           0 :                             LogPrintf("hashmeter %6.0f khash/s\n", dHashesPerSec / 1000.0);
     245             :                         }
     246             :                     }
     247             :                 }
     248             :             }
     249             : 
     250             :             // Check for stop or if block needs to be rebuilt
     251           0 :             boost::this_thread::interruption_point();
     252           0 :             if (    (g_connman && g_connman->GetNodeCount(CConnman::CONNECTIONS_ALL) == 0 && Params().MiningRequiresPeers()) || // Regtest mode doesn't require peers
     253           0 :                     (pblock->nNonce >= 0xffff0000) ||
     254           0 :                     (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60) ||
     255           0 :                     (pindexPrev != chainActive.Tip())
     256             :                 ) break;
     257             : 
     258             :             // Update nTime every few seconds
     259           0 :             UpdateTime(pblock.get(), consensus, pindexPrev);
     260           0 :             if (Params().GetConsensus().fPowAllowMinDifficultyBlocks) {
     261             :                 // Changing pblock->nTime can change work required on testnet:
     262           0 :                 hashTarget.SetCompact(pblock->nBits);
     263             :             }
     264             : 
     265           0 :         }
     266             :     }
     267             : }
     268             : 
     269           0 : void static ThreadBitcoinMiner(void* parg)
     270             : {
     271           0 :     boost::this_thread::interruption_point();
     272           0 :     CWallet* pwallet = (CWallet*)parg;
     273           0 :     try {
     274           0 :         BitcoinMiner(pwallet, false);
     275           0 :         boost::this_thread::interruption_point();
     276           0 :     } catch (const std::exception& e) {
     277           0 :         LogPrintf("PIVXMiner exception\n");
     278           0 :     } catch (...) {
     279           0 :         LogPrintf("PIVXMiner exception\n");
     280             :     }
     281             : 
     282           0 :     LogPrintf("PIVXMiner exiting\n");
     283           0 : }
     284             : 
     285         721 : void GenerateBitcoins(bool fGenerate, CWallet* pwallet, int nThreads)
     286             : {
     287         721 :     static boost::thread_group* minerThreads = nullptr;
     288         721 :     fGenerateBitcoins = fGenerate;
     289             : 
     290         721 :     if (minerThreads != nullptr) {
     291           0 :         minerThreads->interrupt_all();
     292           0 :         delete minerThreads;
     293           0 :         minerThreads = nullptr;
     294             :     }
     295             : 
     296         721 :     if (nThreads == 0 || !fGenerate)
     297             :         return;
     298             : 
     299           0 :     minerThreads = new boost::thread_group();
     300           0 :     for (int i = 0; i < nThreads; i++)
     301           0 :         minerThreads->create_thread(std::bind(&ThreadBitcoinMiner, pwallet));
     302             : }
     303             : 
     304           0 : void ThreadStakeMinter()
     305             : {
     306           0 :     boost::this_thread::interruption_point();
     307           0 :     LogPrintf("ThreadStakeMinter started. Using wallet-0\n");
     308           0 :     CWallet* pwallet = vpwallets[0];
     309           0 :     try {
     310           0 :         BitcoinMiner(pwallet, true);
     311           0 :         boost::this_thread::interruption_point();
     312           0 :     } catch (const std::exception& e) {
     313           0 :         LogPrintf("ThreadStakeMinter() exception \n");
     314           0 :     } catch (...) {
     315           0 :         LogPrintf("ThreadStakeMinter() error \n");
     316             :     }
     317           0 :     LogPrintf("ThreadStakeMinter exiting,\n");
     318           0 : }
     319             : 
     320             : #endif // ENABLE_WALLET

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