Improved duplicate share registry performance

src/server/poolserver/Stratum/Client.cpp

@@ -166,9 +166,13 @@ namespace Stratum
             return;
         }
         
-        ByteBuffer share;
-        share << extranonce2 << timebuf << noncebuf;
-        if (!job.SubmitShare(share.Binary())) {
+        // Pack two 32bit ints into 64bit
+        ByteBuffer sharebuf;
+        sharebuf << noncebuf << extranonce2;
+        uint64 share;
+        sharebuf >> share;
+        sLog.Debug(LOG_STRATUM, "Job::SubmitShare: Nonce: %s, Extranonse: %s, Share: %u", Util::BinToASCII(noncebuf.Binary()).c_str(), Util::BinToASCII(extranonce2).c_str(), share);
+        if (!job.SubmitShare(share)) {
             sLog.Error(LOG_STRATUM, "%s: Duplicate share", username.c_str());
             DataMgr::Instance()->Push(Share(_ip, username, false, "Duplicate share", Util::Date(), job.diff));
             _shareLimiter.LogBad();

src/server/poolserver/Stratum/Job.h

@@ -16,18 +16,17 @@ namespace Stratum
         Bitcoin::BlockPtr block;
         BinaryData coinbase1;
         BinaryData coinbase2;
-        std::set<std::string> shares;
+        std::set<uint64> shares;
         BigInt blockCriteria;
         BigInt target;
         
         // Submits share to a job
         // Returns false if the same share already exists
-        bool SubmitShare(BinaryData share)
+        bool SubmitShare(uint64 share)
         {
-            std::string sharestr = Util::BinToASCII(Crypto::SHA256(share));
-            std::set<std::string>::iterator it = shares.find(sharestr);
+            std::set<uint64>::iterator it = shares.find(share);
             if (it == shares.end()) {
-                shares.insert(sharestr);
+                shares.insert(share);
                 return true;
             } else
                 return false;