/*
 * utility_atomicscopeguard.hpp
 *
 *  Created on: Mar 21, 2021
 *      Author: erki
 */

#ifndef SKULLC_UTILITY_ATOMICSCOPEGUARD_HPP_
#define SKULLC_UTILITY_ATOMICSCOPEGUARD_HPP_

#include <cstdint>

namespace Utility
{

template<typename H>
struct AtomicScopeGuard
{
  using hal = H;
  AtomicScopeGuard()
  {
    hal::disableInterrupts();
    reentrancy_counter_++;
  }

  AtomicScopeGuard(const AtomicScopeGuard&) = delete;
  AtomicScopeGuard(AtomicScopeGuard&&) = delete;
  AtomicScopeGuard& operator=(const AtomicScopeGuard&) = delete;
  AtomicScopeGuard& operator=(AtomicScopeGuard&&) = delete;

  ~AtomicScopeGuard()
  {
    reentrancy_counter_--;

    if (!reentrancy_counter_)
      hal::enableInterrupts();
  }

private:
  static std::int32_t reentrancy_counter_;
};

template<typename H>
std::int32_t AtomicScopeGuard<H>::reentrancy_counter_ = 0;

}// namespace Utility

#endif /* SKULLC_UTILITY_ATOMICSCOPEGUARD_HPP_ */