spinlock.h

Go to the documentation of this file.

#ifndef CLIB_SPINLOCK_H
#define CLIB_SPINLOCK_H

#include <atomic>
#include <mutex>

namespace Pol
{
namespace Clib
{
class SpinLock
{
  friend class std::lock_guard<SpinLock>;

public:
  SpinLock();
  ~SpinLock();

private:
  void lock();
  void unlock();

  std::atomic_flag _lck;
};

typedef std::lock_guard<SpinLock> SpinLockGuard;

inline SpinLock::SpinLock()
{
  _lck.clear();
}
inline SpinLock::~SpinLock() {}

inline void SpinLock::lock()
{
  while ( _lck.test_and_set( std::memory_order_acquire ) )
  {
  }
}

inline void SpinLock::unlock()
{
  _lck.clear( std::memory_order_release );
}

}  // namespace Clib
}  // namespace Pol
#endif