blockchain: speed up getting N blocks weights/long term weights

1 files changed, 22 insertions, 0 deletions

diff --git a/src/blockchain_db/blockchain_db.h b/src/blockchain_db/blockchain_db.h
index ed13de5b5..8eb1d7fa5 100644
--- a/src/blockchain_db/blockchain_db.h
+++ b/src/blockchain_db/blockchain_db.h
@@ -947,6 +947,17 @@ public:
   virtual size_t get_block_weight(const uint64_t& height) const = 0;
 
   /**
+   * @brief fetch the last N blocks' weights
+   *
+   * If there are fewer than N blocks, the returned array will be smaller than N
+   *
+   * @param count the number of blocks requested
+   *
+   * @return the weights
+   */
+  virtual std::vector<uint64_t> get_block_weights(uint64_t start_height, size_t count) const = 0;
+
+  /**
    * @brief fetch a block's cumulative difficulty
    *
    * The subclass should return the cumulative difficulty of the block with the
@@ -1000,6 +1011,17 @@ public:
   virtual uint64_t get_block_long_term_weight(const uint64_t& height) const = 0;
 
   /**
+   * @brief fetch the last N blocks' long term weights
+   *
+   * If there are fewer than N blocks, the returned array will be smaller than N
+   *
+   * @param count the number of blocks requested
+   *
+   * @return the weights
+   */
+  virtual std::vector<uint64_t> get_long_term_block_weights(uint64_t start_height, size_t count) const = 0;
+
+  /**
    * @brief fetch a block's hash
    *
    * The subclass should return hash of the block with the