1 files changed, 24 insertions, 21 deletions

diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 1dc29826af..2d54dfa543 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -55,6 +55,12 @@ static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits
     return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
 }
 
+void CChainParams::UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
+{
+    consensus.vDeployments[d].nStartTime = nStartTime;
+    consensus.vDeployments[d].nTimeout = nTimeout;
+}
+
 /**
  * Main network
  */
@@ -165,7 +171,6 @@ public:
         };
     }
 };
-static CMainParams mainParams;
 
 /**
  * Testnet (v3)
@@ -253,7 +258,6 @@ public:
 
     }
 };
-static CTestNetParams testNetParams;
 
 /**
  * Regression test
@@ -326,42 +330,41 @@ public:
         base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
         base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
     }
-
-    void UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
-    {
-        consensus.vDeployments[d].nStartTime = nStartTime;
-        consensus.vDeployments[d].nTimeout = nTimeout;
-    }
 };
-static CRegTestParams regTestParams;
 
-static CChainParams *pCurrentParams = 0;
+static std::unique_ptr<CChainParams> globalChainParams;
+static std::unique_ptr<CChainParams> globalSwitchingChainParams;
 
 const CChainParams &Params() {
-    assert(pCurrentParams);
-    return *pCurrentParams;
+    assert(globalChainParams);
+    return *globalChainParams;
 }
 
-CChainParams& Params(const std::string& chain)
+std::unique_ptr<CChainParams> CreateChainParams(const std::string& chain)
 {
     if (chain == CBaseChainParams::MAIN)
-            return mainParams;
+        return std::unique_ptr<CChainParams>(new CMainParams());
     else if (chain == CBaseChainParams::TESTNET)
-            return testNetParams;
+        return std::unique_ptr<CChainParams>(new CTestNetParams());
     else if (chain == CBaseChainParams::REGTEST)
-            return regTestParams;
-    else
-        throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
+        return std::unique_ptr<CChainParams>(new CRegTestParams());
+    throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
+}
+
+const CChainParams& Params(const std::string& chain)
+{
+    globalSwitchingChainParams = CreateChainParams(chain);
+    return *globalSwitchingChainParams;
 }
 
 void SelectParams(const std::string& network)
 {
     SelectBaseParams(network);
-    pCurrentParams = &Params(network);
+    globalChainParams = CreateChainParams(network);
 }
 
-void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
+void UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
 {
-    regTestParams.UpdateBIP9Parameters(d, nStartTime, nTimeout);
+    globalChainParams->UpdateBIP9Parameters(d, nStartTime, nTimeout);
 }