mirror of
https://github.com/Icinga/icinga2.git
synced 2025-10-28 09:44:05 +01:00
46 lines
874 B
C++
46 lines
874 B
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
|
|
|
|
#ifndef RINGBUFFER_H
|
|
#define RINGBUFFER_H
|
|
|
|
#include "base/i2-base.hpp"
|
|
#include "base/object.hpp"
|
|
#include <vector>
|
|
#include <mutex>
|
|
|
|
namespace icinga
|
|
{
|
|
|
|
/**
|
|
* A ring buffer that holds a pre-defined number of integers.
|
|
*
|
|
* @ingroup base
|
|
*/
|
|
class RingBuffer final
|
|
{
|
|
public:
|
|
DECLARE_PTR_TYPEDEFS(RingBuffer);
|
|
|
|
typedef std::vector<int>::size_type SizeType;
|
|
|
|
RingBuffer(SizeType slots);
|
|
|
|
SizeType GetLength() const;
|
|
void InsertValue(SizeType tv, int num);
|
|
int UpdateAndGetValues(SizeType tv, SizeType span);
|
|
double CalculateRate(SizeType tv, SizeType span);
|
|
|
|
private:
|
|
mutable std::mutex m_Mutex;
|
|
std::vector<int> m_Slots;
|
|
SizeType m_TimeValue;
|
|
SizeType m_InsertedValues;
|
|
|
|
void InsertValueUnlocked(SizeType tv, int num);
|
|
int UpdateAndGetValuesUnlocked(SizeType tv, SizeType span);
|
|
};
|
|
|
|
}
|
|
|
|
#endif /* RINGBUFFER_H */
|