WalletAsyncContextCounter.h

// Copyright (c) 2012-2017, The CryptoNote developers, The Bytecoin developers
//
// This file is part of Bytecoin.
//
// Bytecoin is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Bytecoin is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Bytecoin.  If not, see <http://www.gnu.org/licenses/>.

#pragma once

#include <condition_variable>
#include <mutex>
#include <stdint.h>

namespace CryptoNote {

class WalletAsyncContextCounter
{
public:
  WalletAsyncContextCounter() : m_asyncContexts(0) {}

  void addAsyncContext();
  void delAsyncContext();

  //returns true if contexts are finished before timeout
  void waitAsyncContextsFinish();

private:
  uint32_t m_asyncContexts;
  std::condition_variable m_cv;
  std::mutex m_mutex;
};

} //namespace CryptoNote