From f3522a11d2bbd217bb15b22765710364584f8461 Mon Sep 17 00:00:00 2001
From: sneaxiy <sneaxiy@126.com>
Date: Mon, 26 Nov 2018 19:47:03 +0800
Subject: [PATCH] fix mac unittest bug test=develop

---
 paddle/fluid/memory/allocation/best_fit_allocator_test.cc | 8 ++++----
 paddle/fluid/memory/allocation/best_fit_allocator_test.cu | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/paddle/fluid/memory/allocation/best_fit_allocator_test.cc b/paddle/fluid/memory/allocation/best_fit_allocator_test.cc
index 20748a23a19..b274b05562b 100644
--- a/paddle/fluid/memory/allocation/best_fit_allocator_test.cc
+++ b/paddle/fluid/memory/allocation/best_fit_allocator_test.cc
@@ -99,9 +99,8 @@ TEST(BestFitAllocator, test_concurrent_cpu_allocation) {
 
   LockedAllocator locked_allocator(std::move(best_fit_allocator));
 
-  auto th_main = [&] {
-    std::random_device dev;
-    std::default_random_engine engine(dev());
+  auto th_main = [&](std::random_device::result_type seed) {
+    std::default_random_engine engine(seed);
     std::uniform_int_distribution<size_t> dist(1U, 1024U);
 
     for (size_t i = 0; i < 128; ++i) {
@@ -125,7 +124,8 @@ TEST(BestFitAllocator, test_concurrent_cpu_allocation) {
   {
     std::vector<std::thread> threads;
     for (size_t i = 0; i < 1024; ++i) {
-      threads.emplace_back(th_main);
+      std::random_device dev;
+      threads.emplace_back(th_main, dev());
     }
     for (auto& th : threads) {
       th.join();
diff --git a/paddle/fluid/memory/allocation/best_fit_allocator_test.cu b/paddle/fluid/memory/allocation/best_fit_allocator_test.cu
index f7f17e1d36e..fdd5b43ad4a 100644
--- a/paddle/fluid/memory/allocation/best_fit_allocator_test.cu
+++ b/paddle/fluid/memory/allocation/best_fit_allocator_test.cu
@@ -41,9 +41,8 @@ TEST(BestFitAllocator, concurrent_cuda) {
   LockedAllocator concurrent_allocator(
       std::unique_ptr<Allocator>(new BestFitAllocator(cuda_allocation.get())));
 
-  auto th_main = [&] {
-    std::random_device dev;
-    std::default_random_engine engine(dev());
+  auto th_main = [&](std::random_device::result_type seed) {
+    std::default_random_engine engine(seed);
     std::uniform_int_distribution<size_t> dist(1U, 1024U);
     platform::CUDAPlace gpu(0);
     platform::CUDADeviceContext dev_ctx(gpu);
@@ -75,7 +74,8 @@ TEST(BestFitAllocator, concurrent_cuda) {
   {
     std::vector<std::thread> threads;
     for (size_t i = 0; i < 1024; ++i) {
-      threads.emplace_back(th_main);
+      std::random_device dev;
+      threads.emplace_back(th_main, dev());
     }
     for (auto& th : threads) {
       th.join();
-- 
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