From 6f8699fc809889f748c2f83a9b042a497f81d32a Mon Sep 17 00:00:00 2001
From: Delyan Kratunov <delyank@fb.com>
Date: Mon, 1 Jun 2015 21:35:34 -0700
Subject: [PATCH] Minor fix

Summary:
`LockFreeRingBuffer` was using `std::unique_ptr` but not importing `memory`.
Also, Android NDK's libstdc++ doesn't provide `std::llround`, use straight
`llround`, we don't need the constexpr-ness anyway.

Test Plan: `fbmake runtests`

Reviewed By: jmkaldor@fb.com

Subscribers: folly-diffs@, yfeldblum, chalfant

FB internal diff: D2116923

Signature: t1:2116923:1433210832:9ec0ed7f558c271a51d528b8f88fbce9b466ba3a
---
 folly/experimental/LockFreeRingBuffer.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/folly/experimental/LockFreeRingBuffer.h b/folly/experimental/LockFreeRingBuffer.h
index 87ed084e..f8dff773 100644
--- a/folly/experimental/LockFreeRingBuffer.h
+++ b/folly/experimental/LockFreeRingBuffer.h
@@ -20,6 +20,7 @@
 #include <boost/noncopyable.hpp>
 #include <iostream>
 #include <cmath>
+#include <memory>
 #include <string.h>
 #include <type_traits>
 #include <unistd.h>
@@ -129,7 +130,7 @@ public:
     assert(skipFraction >= 0.0 && skipFraction <= 1.0);
     uint64_t ticket = ticket_.load();
 
-    uint64_t backStep = std::llround((1.0 - skipFraction) * capacity_);
+    uint64_t backStep = llround((1.0 - skipFraction) * capacity_);
 
     // always try to move at least one step backward to something readable
     backStep = std::max<uint64_t>(1, backStep);
-- 
2.34.1