fsb_timing.h

#ifndef FSB_TIMING_H
#define FSB_TIMING_H
 
#include <cstdint>
#include <ctime>
 
#include "fsb_types.h"
 
namespace fsb
{
 
constexpr long MINIMUM_STEP_SIZE_NS = 10000;
 
enum class TimingError : uint8_t
{
    SUCCESS = 0,
    MONOTONIC_CLOCK_FAILED = 1,
    SLEEP_FAILED = 2,
    STEP_SIZE_BELOW_CLOCK_RESOLUTION = 3,
    STEP_SIZE_LESS_THAN_MINIMUM = 4
};
 
class PeriodicTimer
{
public:
    PeriodicTimer() = default;
 
    TimingError initialize(const timespec& step_size);
 
    TimingError start();
 
    TimingError step(real_t& nominal_time, real_t& remainder);
 
private:
 
    timespec m_step_req = {};
    timespec m_init = {};
    timespec m_step_size = {};
};
 
 
} // namespace fsb
 
#endif