Merge #7507: Remove internal miner

8d1de43 Remove internal miner (Leviathn)

1 files changed, 0 insertions, 203 deletions

diff --git a/src/miner.cpp b/src/miner.cpp
index 9281f7285c..ec87e84ca7 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -315,206 +315,3 @@ void IncrementExtraNonce(CBlock* pblock, const CBlockIndex* pindexPrev, unsigned
     pblock->vtx[0] = txCoinbase;
     pblock->hashMerkleRoot = BlockMerkleRoot(*pblock);
 }
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// Internal miner
-//
-
-//
-// ScanHash scans nonces looking for a hash with at least some zero bits.
-// The nonce is usually preserved between calls, but periodically or if the
-// nonce is 0xffff0000 or above, the block is rebuilt and nNonce starts over at
-// zero.
-//
-bool static ScanHash(const CBlockHeader *pblock, uint32_t& nNonce, uint256 *phash)
-{
-    // Write the first 76 bytes of the block header to a double-SHA256 state.
-    CHash256 hasher;
-    CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
-    ss << *pblock;
-    assert(ss.size() == 80);
-    hasher.Write((unsigned char*)&ss[0], 76);
-
-    while (true) {
-        nNonce++;
-
-        // Write the last 4 bytes of the block header (the nonce) to a copy of
-        // the double-SHA256 state, and compute the result.
-        CHash256(hasher).Write((unsigned char*)&nNonce, 4).Finalize((unsigned char*)phash);
-
-        // Return the nonce if the hash has at least some zero bits,
-        // caller will check if it has enough to reach the target
-        if (((uint16_t*)phash)[15] == 0)
-            return true;
-
-        // If nothing found after trying for a while, return -1
-        if ((nNonce & 0xfff) == 0)
-            return false;
-    }
-}
-
-static bool ProcessBlockFound(const CBlock* pblock, const CChainParams& chainparams)
-{
-    LogPrintf("%s\n", pblock->ToString());
-    LogPrintf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue));
-
-    // Found a solution
-    {
-        LOCK(cs_main);
-        if (pblock->hashPrevBlock != chainActive.Tip()->GetBlockHash())
-            return error("BitcoinMiner: generated block is stale");
-    }
-
-    // Inform about the new block
-    GetMainSignals().BlockFound(pblock->GetHash());
-
-    // Process this block the same as if we had received it from another node
-    CValidationState state;
-    if (!ProcessNewBlock(state, chainparams, NULL, pblock, true, NULL))
-        return error("BitcoinMiner: ProcessNewBlock, block not accepted");
-
-    return true;
-}
-
-void static BitcoinMiner(const CChainParams& chainparams)
-{
-    LogPrintf("BitcoinMiner started\n");
-    SetThreadPriority(THREAD_PRIORITY_LOWEST);
-    RenameThread("bitcoin-miner");
-
-    unsigned int nExtraNonce = 0;
-
-    boost::shared_ptr<CReserveScript> coinbaseScript;
-    GetMainSignals().ScriptForMining(coinbaseScript);
-
-    try {
-        // Throw an error if no script was provided.  This can happen
-        // due to some internal error but also if the keypool is empty.
-        // In the latter case, already the pointer is NULL.
-        if (!coinbaseScript || coinbaseScript->reserveScript.empty())
-            throw std::runtime_error("No coinbase script available (mining requires a wallet)");
-
-        while (true) {
-            if (chainparams.MiningRequiresPeers()) {
-                // Busy-wait for the network to come online so we don't waste time mining
-                // on an obsolete chain. In regtest mode we expect to fly solo.
-                do {
-                    bool fvNodesEmpty;
-                    {
-                        LOCK(cs_vNodes);
-                        fvNodesEmpty = vNodes.empty();
-                    }
-                    if (!fvNodesEmpty && !IsInitialBlockDownload())
-                        break;
-                    MilliSleep(1000);
-                } while (true);
-            }
-
-            //
-            // Create new block
-            //
-            unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
-            CBlockIndex* pindexPrev = chainActive.Tip();
-
-            auto_ptr<CBlockTemplate> pblocktemplate(CreateNewBlock(chainparams, coinbaseScript->reserveScript));
-            if (!pblocktemplate.get())
-            {
-                LogPrintf("Error in BitcoinMiner: Keypool ran out, please call keypoolrefill before restarting the mining thread\n");
-                return;
-            }
-            CBlock *pblock = &pblocktemplate->block;
-            IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
-
-            LogPrintf("Running BitcoinMiner with %u transactions in block (%u bytes)\n", pblock->vtx.size(),
-                ::GetSerializeSize(*pblock, SER_NETWORK, PROTOCOL_VERSION));
-
-            //
-            // Search
-            //
-            int64_t nStart = GetTime();
-            arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits);
-            uint256 hash;
-            uint32_t nNonce = 0;
-            while (true) {
-                // Check if something found
-                if (ScanHash(pblock, nNonce, &hash))
-                {
-                    if (UintToArith256(hash) <= hashTarget)
-                    {
-                        // Found a solution
-                        pblock->nNonce = nNonce;
-                        assert(hash == pblock->GetHash());
-
-                        SetThreadPriority(THREAD_PRIORITY_NORMAL);
-                        LogPrintf("BitcoinMiner:\n");
-                        LogPrintf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", hash.GetHex(), hashTarget.GetHex());
-                        ProcessBlockFound(pblock, chainparams);
-                        SetThreadPriority(THREAD_PRIORITY_LOWEST);
-                        coinbaseScript->KeepScript();
-
-                        // In regression test mode, stop mining after a block is found.
-                        if (chainparams.MineBlocksOnDemand())
-                            throw boost::thread_interrupted();
-
-                        break;
-                    }
-                }
-
-                // Check for stop or if block needs to be rebuilt
-                boost::this_thread::interruption_point();
-                // Regtest mode doesn't require peers
-                if (vNodes.empty() && chainparams.MiningRequiresPeers())
-                    break;
-                if (nNonce >= 0xffff0000)
-                    break;
-                if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
-                    break;
-                if (pindexPrev != chainActive.Tip())
-                    break;
-
-                // Update nTime every few seconds
-                if (UpdateTime(pblock, chainparams.GetConsensus(), pindexPrev) < 0)
-                    break; // Recreate the block if the clock has run backwards,
-                           // so that we can use the correct time.
-                if (chainparams.GetConsensus().fPowAllowMinDifficultyBlocks)
-                {
-                    // Changing pblock->nTime can change work required on testnet:
-                    hashTarget.SetCompact(pblock->nBits);
-                }
-            }
-        }
-    }
-    catch (const boost::thread_interrupted&)
-    {
-        LogPrintf("BitcoinMiner terminated\n");
-        throw;
-    }
-    catch (const std::runtime_error &e)
-    {
-        LogPrintf("BitcoinMiner runtime error: %s\n", e.what());
-        return;
-    }
-}
-
-void GenerateBitcoins(bool fGenerate, int nThreads, const CChainParams& chainparams)
-{
-    static boost::thread_group* minerThreads = NULL;
-
-    if (nThreads < 0)
-        nThreads = GetNumCores();
-
-    if (minerThreads != NULL)
-    {
-        minerThreads->interrupt_all();
-        delete minerThreads;
-        minerThreads = NULL;
-    }
-
-    if (nThreads == 0 || !fGenerate)
-        return;
-
-    minerThreads = new boost::thread_group();
-    for (int i = 0; i < nThreads; i++)
-        minerThreads->create_thread(boost::bind(&BitcoinMiner, boost::cref(chainparams)));
-}