mutex.hpp

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#pragma once
 
#include <mutex>
#include <type_traits>
 
#include "detail/write_guard.hpp"
 
namespace bricks {
 
template <typename Class, typename std::enable_if_t<std::is_class_v<Class>, bool> = true>
class mutex : private Class {
 private:
  friend class detail::write_guard<mutex, std::mutex>;
  friend class detail::write_guard<const mutex, std::mutex>;
 
 public:
  using value_type = Class;
 
  using lock_guard = detail::write_guard<mutex, std::mutex>;
  using const_lock_guard = detail::write_guard<const mutex, std::mutex>;
 
  using Class::Class;
 
  auto lock() noexcept -> lock_guard { return lock_guard{*this, mutex_}; }
  auto lock() const noexcept -> const_lock_guard { return const_lock_guard{*this, mutex_}; }
 
 private:
  mutable std::mutex mutex_;
};
 
}  // namespace bricks