monero/tests/unit_tests/unit_tests_utils.h

// Copyright (c) 2012-2013 The Cryptonote developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#pragma once

#include <atomic>

namespace unit_test
{
  class call_counter
  {
  public:
    call_counter()
      : m_counter(0)
    {
    }

    void inc() volatile
    {
      // memory_order_relaxed is enough for call counter
      m_counter.fetch_add(1, std::memory_order_relaxed);
    }

    size_t get() volatile const
    {
      return m_counter.load(std::memory_order_relaxed);
    }

    void reset() volatile
    {
      m_counter.store(0, std::memory_order_relaxed);
    }

  private:
    std::atomic<size_t> m_counter;
  };
}