source/time/utils.cpp

   1 #ifdef WIN32
   2 #include <windows.h>
   3 #else
   4 #include <sys/resource.h>
   5 #include <sys/time.h>
   6 #include <cerrno>
   7 #endif
   8 #include <msp/core/systemerror.h>
   9 #include "datetime.h"
  10 #include "rawtime_private.h"
  11 #include "timedelta.h"
  12 #include "timestamp.h"
  13 #include "units.h"
  14 #include "utils.h"
  15
  16 using namespace std;
  17
  18 namespace Msp {
  19 namespace Time {
  20
  21 TimeStamp now()
  22 {
  23 #ifndef WIN32
  24         timeval tv;
  25         gettimeofday(&tv, 0);
  26         return TimeStamp(timeval_to_rawtime(tv));
  27 #else
  28         FILETIME ft;
  29         GetSystemTimeAsFileTime(&ft);
  30         return TimeStamp(filetime_to_rawtime(ft));
  31 #endif
  32 }
  33
  34 string format_now(const string &fmt)
  35 {
  36         return DateTime(now()).format(fmt);
  37 }
  38
  39 TimeDelta get_cpu_time()
  40 {
  41 #ifndef WIN32
  42         rusage ru;
  43         getrusage(RUSAGE_SELF, &ru);
  44         return (ru.ru_utime.tv_sec+ru.ru_stime.tv_sec)*sec + (ru.ru_utime.tv_usec+ru.ru_stime.tv_usec)*usec;
  45 #else
  46         //XXX Figure out the function to use on Win32
  47         return TimeDelta();
  48 #endif
  49 }
  50
  51 void sleep(const TimeDelta &d)
  52 {
  53 #ifndef WIN32
  54         timespec ts = rawtime_to_timespec(d.raw());
  55         while(nanosleep(&ts, 0)==-1)
  56                 if(errno!=EINTR)
  57                         throw system_error("nanosleep");
  58 #else
  59         Sleep((DWORD)(d/msec));
  60 #endif
  61 }
  62
  63 } // namespace Time
  64 } // namespace Msp