-#if __x86_64__
-typedef SpinLockMslImpl SpinLock;
-#elif __APPLE__
-typedef SpinLockAppleImpl SpinLock;
-#elif FOLLY_HAVE_PTHREAD_SPINLOCK_T
-typedef SpinLockPthreadImpl SpinLock;
-#else
-typedef SpinLockPthreadMutexImpl SpinLock;
-#endif
+class SpinLock {
+ public:
+ FOLLY_ALWAYS_INLINE SpinLock() {
+ lock_.init();
+ }
+ FOLLY_ALWAYS_INLINE void lock() const {
+ lock_.lock();
+ }
+ FOLLY_ALWAYS_INLINE void unlock() const {
+ lock_.unlock();
+ }
+ FOLLY_ALWAYS_INLINE bool try_lock() const {
+ return lock_.try_lock();
+ }
+
+ private:
+ mutable folly::MicroSpinLock lock_;
+};