time_based_metric_stub.h

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/*
   Copyright (c) 2024, Oracle and/or its affiliates.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.
 
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   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.
 
   This program 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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef CS_DUMMY_TIME_BASED_METRIC
#define CS_DUMMY_TIME_BASED_METRIC
 
#include "time_based_metric_interface.h"
 
/// @brief Class that intends to be a dummy end point for time metrics
class Time_based_metric_stub : public Time_based_metric_interface {
 public:
  /// @brief Resets the counter and summed time to 0
  void reset() override;
 
  /// @brief Starts counting time we are waiting on something
  void start_timer() override;
 
  /// @brief Stops the timer for the wait.
  ///        Requires start_timer to be called first
  void stop_timer() override;
 
  /// @brief Returns the time waited across all executions of the start/stop
  /// methods
  /// @return The total time waited, in nanoseconds.
  int64_t get_sum_time_elapsed() const override;
 
  /// @brief Increments the waiting counter
  void increment_counter() override;
 
  /// @brief Returns the number of time we waited on give spot
  /// @return the number of times waited
  int64_t get_count() const override;
};
 
#endif /* CS_DUMMY_TIME_BASED_METRIC */