diff --git a/paddle/fluid/framework/CMakeLists.txt b/paddle/fluid/framework/CMakeLists.txt
index 1d62792b80dd002b894da28be9162fc7d3ce054e..fac9f16a89bab311c338475aef7c79015ab466be 100644
--- a/paddle/fluid/framework/CMakeLists.txt
+++ b/paddle/fluid/framework/CMakeLists.txt
@@ -115,6 +115,8 @@ cc_test(cow_ptr_tests SRCS details/cow_ptr_test.cc)
 # cc_test(channel_test SRCS channel_test.cc)
 cc_test(tuple_test SRCS tuple_test.cc )
 
+cc_test(rw_lock_test SRCS rw_lock_test.cc)
+
 # disable test temporarily.
 # TODO https://github.com/PaddlePaddle/Paddle/issues/11971
 # cc_test(concurrency_test SRCS concurrency_test.cc DEPS go_op channel_close_op channel_create_op
diff --git a/paddle/fluid/framework/rw_lock.h b/paddle/fluid/framework/rw_lock.h
index 2a4009b765e35c6cef8dc9ffb3e04a50f0dc2b38..1418fb5134fdde2392da912b5f1bd9fc74e58400 100644
--- a/paddle/fluid/framework/rw_lock.h
+++ b/paddle/fluid/framework/rw_lock.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,6 +16,8 @@ limitations under the License. */
 
 #include <pthread.h>
 
+#include "paddle/fluid/platform/enforce.h"
+
 namespace paddle {
 namespace framework {
 
diff --git a/paddle/fluid/framework/rw_lock_test.cc b/paddle/fluid/framework/rw_lock_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..16f9cbb65229f10912ee90436c3557aaaca169b8
--- /dev/null
+++ b/paddle/fluid/framework/rw_lock_test.cc
@@ -0,0 +1,81 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+#include "paddle/fluid/framework/rw_lock.h"
+#include <gtest/gtest.h>
+#include <chrono>  // NOLINT
+#include <thread>  // NOLINT
+#include <vector>
+
+namespace f = paddle::framework;
+
+void f1(f::RWLock *lock) {
+  lock->RDLock();
+  lock->UNLock();
+}
+
+TEST(RWLOCK, read_read) {
+  f::RWLock lock;
+  lock.RDLock();
+  std::thread t1(f1, &lock);
+  std::thread t2(f1, &lock);
+  t1.join();
+  t2.join();
+  lock.UNLock();
+}
+
+void f2(f::RWLock *lock, std::vector<int> *result) {
+  lock->RDLock();
+  ASSERT_EQ(result->size(), 0UL);
+  lock->UNLock();
+}
+
+void f3(f::RWLock *lock, std::vector<int> *result) {
+  lock->WRLock();
+  result->push_back(1);
+  lock->UNLock();
+}
+
+TEST(RWLOCK, read_write) {
+  f::RWLock lock;
+  std::vector<int> result;
+
+  lock.RDLock();
+  std::thread t1(f2, &lock, &result);
+  t1.join();
+  std::thread t2(f3, &lock, &result);
+  std::this_thread::sleep_for(std::chrono::seconds(1));
+  ASSERT_EQ(result.size(), 0UL);
+  lock.UNLock();
+  t2.join();
+  ASSERT_EQ(result.size(), 1UL);
+}
+
+void f4(f::RWLock *lock, std::vector<int> *result) {
+  lock->RDLock();
+  ASSERT_EQ(result->size(), 1UL);
+  lock->UNLock();
+}
+
+TEST(RWLOCK, write_read) {
+  f::RWLock lock;
+  std::vector<int> result;
+
+  lock.WRLock();
+  std::thread t1(f4, &lock, &result);
+  std::this_thread::sleep_for(std::chrono::seconds(1));
+  result.push_back(1);
+  lock.UNLock();
+  t1.join();
+}
diff --git a/paddle/fluid/inference/api/demo_ci/run.sh b/paddle/fluid/inference/api/demo_ci/run.sh
index 3e829dd726b132844a45427b7b0b39eedf197496..7824ef2649af81a2390ff3bc537eb7c93c70e402 100755
--- a/paddle/fluid/inference/api/demo_ci/run.sh
+++ b/paddle/fluid/inference/api/demo_ci/run.sh
@@ -13,16 +13,22 @@ else
   use_gpu_list='false'
 fi
 
+PREFIX=inference-vis-demos%2F
+URL_ROOT=http://paddlemodels.bj.bcebos.com/${PREFIX}
+
 # download vis_demo data
 function download() {
   dir_name=$1
   mkdir -p $dir_name
   cd $dir_name
-  wget -q ${URL_ROOT}$dir_name.tar.gz
-  tar xzf *.tar.gz
+  if [[ -e "${PREFIX}${dir_name}.tar.gz" ]]; then
+    echo "${PREFIX}{dir_name}.tar.gz has been downloaded."
+  else
+      wget -q ${URL_ROOT}$dir_name.tar.gz
+      tar xzf *.tar.gz
+  fi
   cd ..
 }
-URL_ROOT=http://paddlemodels.bj.bcebos.com/inference-vis-demos%2F
 mkdir -p data
 cd data
 vis_demo_list='se_resnext50 ocr mobilenet'