From 0d69c4e9cb0bc4234eb853519928bf3af9b964b5 Mon Sep 17 00:00:00 2001
From: hcz <hczhcz@users.noreply.github.com>
Date: Fri, 23 Aug 2019 14:02:00 +0800
Subject: [PATCH] Fix std::function missing

---
 xdl-algorithm-solution/ESMM/data/src/blocking_queue.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xdl-algorithm-solution/ESMM/data/src/blocking_queue.h b/xdl-algorithm-solution/ESMM/data/src/blocking_queue.h
index 570510d5..7c5c14a4 100644
--- a/xdl-algorithm-solution/ESMM/data/src/blocking_queue.h
+++ b/xdl-algorithm-solution/ESMM/data/src/blocking_queue.h
@@ -39,6 +39,7 @@ limitations under the License.
 #include <unordered_map>
 #include <set>
 #include <string>
+#include <functional>
 #include <type_traits>
 
 namespace xdl {