/*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
-#ifndef FOLLY_SMALLLOCKS_H_
-#define FOLLY_SMALLLOCKS_H_
+#pragma once
/*
* This header defines a few very small mutex types. These are useful
#include <folly/MicroLock.h>
#include <folly/MicroSpinLock.h>
-#include <folly/PicoSpinLock.h>
+#include <folly/Portability.h>
+#if FOLLY_X64 || FOLLY_A64 || FOLLY_PPC64
+#include <folly/PicoSpinLock.h>
#endif