#pragma once

#include <atomic.hpp>
#include "futex_like.hpp"

namespace tpcc {
  namespace solutions {

    class AdaptiveLock {
      public:
          AdaptiveLock() {
            state_.store(false);

            tpcc::atomic <bool> tmp;
            tmp.store(false);
            futex_ = new FutexLike<bool> (tmp);
          }

          ~AdaptiveLock() {
            delete futex_;
          }

          void Lock() {
            while (state_.exchange(true)) {
              futex_->Wait(false);
            }
          }

          void Unlock() {
            state_.store(false);
            futex_->WakeOne();
          }

      private:
          tpcc::atomic<bool> state_;
          FutexLike<bool> *futex_;
      };

  } // namespace solutions
} // namespace tpcc