Speed up basic calls.

libethereum/Client.cpp

@@ -27,6 +27,7 @@
 #include <libdevcore/Log.h>
 #include <libp2p/Host.h>
 #include "Defaults.h"
+#include "Executive.h"
 #include "EthereumHost.h"
 using namespace std;
 using namespace dev;
@@ -355,28 +356,24 @@ bytes Client::call(Secret _secret, u256 _value, Address _dest, bytes const& _dat
 
 bytes Client::call(Address _dest, bytes const& _data, u256 _gas, u256 _value, u256 _gasPrice)
 {
-	bytes out;
 	try
 	{
-		u256 n;
 		State temp;
-		KeyPair k = KeyPair::create();
-	//	cdebug << "Nonce at " << toAddress(_secret) << " pre:" << m_preMine.transactionsFrom(toAddress(_secret)) << " post:" << m_postMine.transactionsFrom(toAddress(_secret));
+//		cdebug << "Nonce at " << toAddress(_secret) << " pre:" << m_preMine.transactionsFrom(toAddress(_secret)) << " post:" << m_postMine.transactionsFrom(toAddress(_secret));
 		{
 			ReadGuard l(x_stateDB);
 			temp = m_postMine;
-			temp.addBalance(k.address(), _gas * _gasPrice + _value);
-			n = temp.transactionsFrom(k.address());
 		}
-		Transaction t(_value, _gasPrice, _gas, _dest, _data, n, k.secret());
-		u256 gasUsed = temp.execute(m_bc, t.rlp(), &out, false);
-		(void)gasUsed; // TODO: do something with gasused which it returns.
+		Executive e(temp, LastHashes(), 0);
+		e.call(_dest, _dest, Address(), _value, _gasPrice, &_data, _gas, Address());
+		e.go();
+		return e.out().toBytes();
 	}
 	catch (...)
 	{
 		// TODO: Some sort of notification of failure.
 	}
-	return out;
+	return bytes();
 }
 
 Address Client::transact(Secret _secret, u256 _endowment, bytes const& _init, u256 _gas, u256 _gasPrice)