Get current time in formatted string with cross-platform C/C++, while avoid using c++11 classes.

utility.h

#include <string>
#include <ctime>
#if defined WIN32
#include <windows.h>
#include <stdint.h>
static int gettimeofday(struct timeval * tp, struct timezone * tzp)
{
  // Note: some broken versions only have 8 trailing zero's, the correct epoch has 9 trailing zero's
  static const uint64_t EPOCH = ((uint64_t) 116444736000000000ULL);
  SYSTEMTIME  system_time;
  FILETIME    file_time;
  uint64_t    time;
  GetSystemTime( &system_time );
  SystemTimeToFileTime( &system_time, &file_time );
  time =  ((uint64_t)file_time.dwLowDateTime )      ;
  time += ((uint64_t)file_time.dwHighDateTime) << 32;
  tp->tv_sec  = (long) ((time - EPOCH) / 10000000L);
  tp->tv_usec = (long) (system_time.wMilliseconds * 1000);
  return 0;
}
#endif
static const char * currentTime() {
  time_t     now = time(0);
  struct tm  tstruct;
  char       buf[80]={0,};
  tstruct = *localtime(&now);
  strftime(buf, sizeof(buf), "%H:%M:%S", &tstruct);
  int milli = 0;
  timeval curTime;
  gettimeofday(&curTime, NULL);
  milli = curTime.tv_usec / 1000;
  char currTime[84] = {0,};
  sprintf(currTime, "%s:%d", buf, milli);
  return currTime;
}