db_ttl_impl.h: pass func parameter by reference

Fix for: [utilities/ttl/db_ttl_impl.h:209]: (performance) Function parameter 'merge_op' should be passed by reference. Signed-off-by: Danny Al-Gaaf <[email protected]>
vinniefalco · Sep 30, 2014 · 873f135 · 873f135
1 parent 8558457
commit 873f135
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/utilities/ttl/db_ttl_impl.h b/utilities/ttl/db_ttl_impl.h
@@ -206,7 +206,7 @@ class TtlCompactionFilterFactory : public CompactionFilterFactory {
 class TtlMergeOperator : public MergeOperator {
 
  public:
-  explicit TtlMergeOperator(const std::shared_ptr<MergeOperator> merge_op,
+  explicit TtlMergeOperator(const std::shared_ptr<MergeOperator>& merge_op,
                             Env* env)
       : user_merge_op_(merge_op), env_(env) {
     assert(merge_op);