OperationTimedBarrier.h

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/* -*- c++ -*-
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 3 of the
 * License, or any later version.
 *
 * Hypertable 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef Hypertable_Master_OperationTimedBarrier_h
#define Hypertable_Master_OperationTimedBarrier_h

#include "OperationEphemeral.h"

namespace Hypertable {

  class OperationTimedBarrier : public OperationEphemeral {
  public:
    OperationTimedBarrier(ContextPtr &context,
                          const String &block_dependency,
                          const String &wakeup_dependency);
    virtual ~OperationTimedBarrier() { }

    virtual void execute();
    virtual const String name();
    virtual const String label();
    virtual bool is_perpetual() { return true; }

    virtual void display_state(std::ostream &os) { }

    void advance_into_future(uint32_t millis);
    void shutdown();

  private:
    std::condition_variable m_cond;
    std::chrono::steady_clock::time_point m_expire_time;
    String m_block_dependency;
    String m_wakeup_dependency;
    bool m_shutdown {};
  };

}

#endif // Hypertable_Master_OperationTimedBarrier_h