Resurrect gethashespersec

.gitignore

@@ -45,6 +45,8 @@ src/qt/forms/ui_*.h
 
 src/qt/test/moc*.cpp
 
+dependencies/*
+
 .deps
 .dirstamp
 .libs

src/miner.cpp

@@ -479,6 +479,9 @@ void IncrementExtraNonce(CBlock* pblock, const CBlockIndex* pindexPrev, unsigned
 // Internal miner
 //
 
+double dHashesPerSec = 0.0;
+int64_t nHPSTimerStart = 0;
+
 static bool ProcessBlockFound(const CBlock* pblock, const CChainParams& chainparams)
 {
     LogPrintf("%s\n", pblock->ToString());
@@ -562,7 +565,10 @@ void static BitcoinMiner(const CChainParams& chainparams)
             uint256 hash;
             pblock->nNonce = 0;
             bool found = false;
-            while (true) {
+            while (true)
+            {
+                unsigned int nHashesDone = 0;
+                
                 // Check if something found
                 while (true)
                 {
@@ -586,10 +592,42 @@ void static BitcoinMiner(const CChainParams& chainparams)
                     }
                     pblock->nNonce += 1;
                     if ((pblock->nNonce & 0xFF) == 0)
+                    {
+                        nHashesDone = 0xFF+1;
                         break;
+                    }
                 }
                 if (found)
                     break;
+                
+                // Meter hashes/sec
+                static int64_t nHashCounter;
+                if (nHPSTimerStart == 0)
+                {
+                    nHPSTimerStart = GetTimeMillis();
+                    nHashCounter = 0;
+                }
+                else
+                    nHashCounter += nHashesDone;
+                if (GetTimeMillis() - nHPSTimerStart > 4000)
+                {
+                    static CCriticalSection cs;
+                    {
+                        LOCK(cs);
+                        if (GetTimeMillis() - nHPSTimerStart > 4000)
+                        {
+                            dHashesPerSec = 1000.0 * nHashCounter / (GetTimeMillis() - nHPSTimerStart);
+                            nHPSTimerStart = GetTimeMillis();
+                            nHashCounter = 0;
+                            static int64_t nLogTime;
+                            if (GetTime() - nLogTime > 30 * 60)
+                            {
+                                nLogTime = GetTime();
+                                LogPrintf("hashmeter %6.0f khash/s\n", dHashesPerSec/1000.0);
+                            }
+                        }
+                    }
+                }
 
                 // Check for stop or if block needs to be rebuilt
                 boost::this_thread::interruption_point();

src/miner.h

@@ -37,4 +37,7 @@ CBlockTemplate* CreateNewBlock(const CChainParams& chainparams, const CScript& s
 void IncrementExtraNonce(CBlock* pblock, const CBlockIndex* pindexPrev, unsigned int& nExtraNonce);
 int64_t UpdateTime(CBlockHeader* pblock, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev);
 
+extern double dHashesPerSec;
+extern int64_t nHPSTimerStart;
+
 #endif // BITCOIN_MINER_H

src/rpc/mining.cpp

@@ -72,6 +72,26 @@ UniValue GetNetworkHashPS(int lookup, int height) {
     return workDiff.getdouble() / timeDiff;
 }
 
+UniValue gethashespersec(const UniValue& params, bool fHelp)
+{
+    if (fHelp || params.size() != 0)
+        throw runtime_error(
+                            "gethashespersec\n"
+                            "\nReturns a recent hashes per second performance measurement while generating.\n"
+                            "See the getgenerate and setgenerate calls to turn generation on and off.\n"
+                            "\nResult:\n"
+                            "n            (numeric) The recent hashes per second when generation is on (will return 0 if generation is off)\n"
+                            "\nExamples:\n"
+                            + HelpExampleCli("gethashespersec", "")
+                            + HelpExampleRpc("gethashespersec", "")
+                            );
+    
+    if (GetTimeMillis() - nHPSTimerStart > 8000)
+        return (int64_t)0;
+    return (int64_t)dHashesPerSec;
+}
+
+
 UniValue getnetworkhashps(const UniValue& params, bool fHelp)
 {
     if (fHelp || params.size() > 2)
@@ -291,6 +311,7 @@ UniValue getmininginfo(const UniValue& params, bool fHelp)
             "  \"errors\": \"...\"          (string) Current errors\n"
             "  \"generate\": true|false     (boolean) If the generation is on or off (see getgenerate or setgenerate calls)\n"
             "  \"genproclimit\": n          (numeric) The processor limit for generation. -1 if no generation. (see getgenerate or setgenerate calls)\n"
+            "  \"hashespersec\": n          (numeric) The hashes per second of the generation, or 0 if no generation.\n"
             "  \"pooledtx\": n              (numeric) The size of the mem pool\n"
             "  \"testnet\": true|false      (boolean) If using testnet or not\n"
             "  \"chain\": \"xxxx\",         (string) current network name as defined in BIP70 (main, test, regtest)\n"
@@ -315,6 +336,7 @@ UniValue getmininginfo(const UniValue& params, bool fHelp)
     obj.push_back(Pair("testnet",          Params().TestnetToBeDeprecatedFieldRPC()));
     obj.push_back(Pair("chain",            Params().NetworkIDString()));
     obj.push_back(Pair("generate",         getgenerate(params, false)));
+    obj.push_back(Pair("hashespersec",     gethashespersec(params, false)));
     return obj;
 }
 
@@ -853,6 +875,7 @@ static const CRPCCommand commands[] =
 { //  category              name                      actor (function)         okSafeMode
   //  --------------------- ------------------------  -----------------------  ----------
     { "mining",             "getnetworkhashps",       &getnetworkhashps,       true  },
+    { "mining",             "gethashespersec",        &gethashespersec,        true  },
     { "mining",             "getmininginfo",          &getmininginfo,          true  },
     { "mining",             "prioritisetransaction",  &prioritisetransaction,  true  },
     { "mining",             "getblocktemplate",       &getblocktemplate,       true  },