From 601c5f9b3ac7b914d0dbe441514d4644b3a9cd98 Mon Sep 17 00:00:00 2001
From: Roman Mandeleil <roman@ethergit.com>
Date: Fri, 6 Feb 2015 10:34:42 +0200
Subject: [PATCH] Measure block execution time

---
 .../org/ethereum/core/BlockchainImpl.java     |  5 +++++
 .../java/org/ethereum/manager/AdminInfo.java  | 22 +++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/ethereumj-core/src/main/java/org/ethereum/core/BlockchainImpl.java b/ethereumj-core/src/main/java/org/ethereum/core/BlockchainImpl.java
index ef2761bf..250d0174 100644
--- a/ethereumj-core/src/main/java/org/ethereum/core/BlockchainImpl.java
+++ b/ethereumj-core/src/main/java/org/ethereum/core/BlockchainImpl.java
@@ -327,6 +327,7 @@ public class BlockchainImpl implements Blockchain {
 
     private List<TransactionReceipt> applyBlock(Block block) {
 
+        long saveTime = System.nanoTime();
         int i = 1;
         long totalGasUsed = 0;
         List<TransactionReceipt> receipts = new ArrayList<>();
@@ -369,6 +370,10 @@ public class BlockchainImpl implements Blockchain {
         if (block.getNumber() >= CONFIG.traceStartBlock())
             repository.dumpState(block, totalGasUsed, 0, null);
 
+        long totalTime = System.nanoTime() - saveTime;
+        adminInfo.addBlockExecTime(totalTime);
+        logger.info("block: num: [{}] hash: [{}], executed after: [{}]nano", block.getNumber(), block.getShortHash(), totalTime);
+
         return receipts;
     }
 
diff --git a/ethereumj-core/src/main/java/org/ethereum/manager/AdminInfo.java b/ethereumj-core/src/main/java/org/ethereum/manager/AdminInfo.java
index 70e41b6e..ac638eaf 100644
--- a/ethereumj-core/src/main/java/org/ethereum/manager/AdminInfo.java
+++ b/ethereumj-core/src/main/java/org/ethereum/manager/AdminInfo.java
@@ -3,6 +3,9 @@ package org.ethereum.manager;
 import org.springframework.stereotype.Component;
 
 import javax.annotation.PostConstruct;
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
 
 /**
  * @author Roman Mandeleil
@@ -14,6 +17,7 @@ public class AdminInfo {
 
     private long startupTimeStamp;
     private boolean consensus = true;
+    private List<Long> blockExecTime = new LinkedList<>();
 
 
     @PostConstruct
@@ -32,4 +36,22 @@ public class AdminInfo {
     public void lostConsensus() {
         consensus = false;
     }
+
+    public void addBlockExecTime(long time){
+        blockExecTime.add(time);
+    }
+
+    public Long getExecAvg(){
+
+        long sum = 0;
+        for (int i = 0; i < blockExecTime.size(); ++i){
+            sum += blockExecTime.get(i);
+        }
+
+        return sum / blockExecTime.size();
+    }
+
+    public List<Long> getBlockExecTime(){
+        return blockExecTime;
+    }
 }