2 files changed, 22 insertions, 1 deletions
diff --git a/src/cryptonote_core/cryptonote_core.cpp b/src/cryptonote_core/cryptonote_core.cpp
index 149fb09df..b8bceb51c 100644
--- a/src/cryptonote_core/cryptonote_core.cpp
+++ b/src/cryptonote_core/cryptonote_core.cpp
@@ -616,6 +616,20 @@ namespace cryptonote
     return true;
   }
   //-----------------------------------------------------------------------------------------------
+  uint64_t core::get_coinbase_tx_sum(const uint64_t start_height, const uint64_t end_height)
+  {
+    std::list<block> blocks;
+    uint64_t coinbase_tx_sum = 0;
+    uint64_t current_index = start_height;
+    this->get_blocks(start_height, end_height - start_height, blocks);
+    BOOST_FOREACH(auto& b, blocks)
+    {
+        coinbase_tx_sum += get_outs_money_amount(b.miner_tx);
+    }
+
+    return coinbase_tx_sum;
+  }
+  //-----------------------------------------------------------------------------------------------
   bool core::check_tx_inputs_keyimages_diff(const transaction& tx) const
   {
     std::unordered_set<crypto::key_image> ki;
diff --git a/src/cryptonote_core/cryptonote_core.h b/src/cryptonote_core/cryptonote_core.h
index 6727d6b04..af7d30a95 100644
--- a/src/cryptonote_core/cryptonote_core.h
+++ b/src/cryptonote_core/cryptonote_core.h
@@ -141,7 +141,7 @@ namespace cryptonote
       * @note see Blockchain::cleanup_handle_incoming_blocks
       */
      bool cleanup_handle_incoming_blocks(bool force_sync = false);
-     	     	
+
      /**
       * @brief check the size of a block against the current maximum
       *
@@ -600,6 +600,13 @@ namespace cryptonote
       */
      size_t get_block_sync_size() const { return block_sync_size; }
 
+     /**
+      * @brief get the sum of coinbase tx amounts between blocks
+      *
+      * @return the number of blocks to sync in one go
+      */
+     uint64_t get_coinbase_tx_sum(const uint64_t start_height, const uint64_t end_height);
+
    private:
 
      /**