#include <stddef.h>
#include <sys/time.h>
#include "time_func.h"

static TIMESTAMP start_timestamp = 0;  /* time since epoch at start of run */

TIMESTAMP Time_since_epoch(void)
{
  TIMESTAMP rc;
  struct timeval tv;

  gettimeofday(&tv, NULL);
  rc = (tv.tv_sec * (TIMESTAMP)1000) + (tv.tv_usec / (TIMESTAMP)1000);
  return rc;
}

TIMESTAMP Time_since_start(void)
{
  return Time_since_epoch() - start_timestamp;
}

void Time_init(void)
{
  start_timestamp = Time_since_epoch();
}