granicus.if.org Git - icinga2/blob - lib/base/ringbuffer.hpp

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2016 Icinga Development Team (https://www.icinga.org/)  *
   4  *                                                                            *
   5  * This program is free software; you can redistribute it and/or              *
   6  * modify it under the terms of the GNU General Public License                *
   7  * as published by the Free Software Foundation; either version 2             *
   8  * of the License, or (at your option) any later version.                     *
   9  *                                                                            *
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  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
  13  * GNU General Public License for more details.                               *
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  18  ******************************************************************************/
  19
  20 #ifndef RINGBUFFER_H
  21 #define RINGBUFFER_H
  22
  23 #include "base/i2-base.hpp"
  24 #include "base/object.hpp"
  25 #include <vector>
  26
  27 namespace icinga
  28 {
  29
  30 /**
  31  * A ring buffer that holds a pre-defined number of integers.
  32  *
  33  * @ingroup base
  34  */
  35 class I2_BASE_API RingBuffer : public Object
  36 {
  37 public:
  38         DECLARE_PTR_TYPEDEFS(RingBuffer);
  39
  40         typedef std::vector<int>::size_type SizeType;
  41
  42         RingBuffer(SizeType slots);
  43
  44         SizeType GetLength(void) const;
  45         void InsertValue(SizeType tv, int num);
  46         int GetValues(SizeType span) const;
  47
  48 private:
  49         std::vector<int> m_Slots;
  50         SizeType m_TimeValue;
  51 };
  52
  53 }
  54
  55 #endif /* RINGBUFFER_H */