Remove SpinLock

Author: chfast

libdevcore/Guards.h

@@ -39,18 +39,6 @@ struct GenericGuardBool: GuardType
 	bool b = true;
 };
 
-/** @brief Simple lock that waits for release without making context switch */
-class SpinLock
-{
-public:
-	SpinLock() { m_lock.clear(); }
-	void lock() { while (m_lock.test_and_set(std::memory_order_acquire)) {} }
-	void unlock() { m_lock.clear(std::memory_order_release); }
-private:
-	std::atomic_flag m_lock;
-};
-using SpinGuard = std::lock_guard<SpinLock>;
-
 template <class N>
 class Notified
 {