From 9f246298e2f0af3973918a0dac0c5f46bc0993c0 Mon Sep 17 00:00:00 2001
From: Changli Gao <xiaosuo@gmail.com>
Date: Wed, 11 Jan 2017 10:38:07 -0800
Subject: [PATCH] Performance: Iterate vector by reference

Summary: Closes https://github.com/facebook/rocksdb/pull/1763

Differential Revision: D4398796

Pulled By: yiwu-arbug

fbshipit-source-id: b82636d
---
 db/event_helpers.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/db/event_helpers.cc b/db/event_helpers.cc
index 9249837c2b..5e5d23130a 100644
--- a/db/event_helpers.cc
+++ b/db/event_helpers.cc
@@ -128,7 +128,7 @@ void EventHelpers::LogAndNotifyTableFileDeletion(
   info.job_id = job_id;
   info.file_path = file_path;
   info.status = status;
-  for (auto listener : listeners) {
+  for (auto& listener : listeners) {
     listener->OnTableFileDeleted(info);
   }
 #endif  // !ROCKSDB_LITE