timebase.hpp

#pragma once
 
#include "libxr_time.hpp"
 
namespace LibXR
{
 
class Timebase
{
 public:
  Timebase(uint64_t max_valid_us = UINT64_MAX, uint32_t max_valid_ms = UINT32_MAX)
  {
    libxr_timebase_max_valid_ms = max_valid_ms;
    libxr_timebase_max_valid_us = max_valid_us;
    timebase = this;
  }
 
  static MicrosecondTimestamp GetMicroseconds() { return timebase->_get_microseconds(); }
 
  static MillisecondTimestamp GetMilliseconds() { return timebase->_get_milliseconds(); }
 
  static inline void DelayMicroseconds(uint32_t us)
  {
    if (us == 0u)
    {
      return;
    }
 
    const uint64_t START = static_cast<uint64_t>(Timebase::GetMicroseconds());
    while ((static_cast<uint64_t>(Timebase::GetMicroseconds()) - START) < us)
    {
      // busy-wait
    }
  }
 
  virtual MicrosecondTimestamp _get_microseconds() = 0;  // NOLINT
 
  virtual MillisecondTimestamp _get_milliseconds() = 0;  // NOLINT
 
  static inline Timebase* timebase = nullptr;  // NOLINT
};
 
}  // namespace LibXR