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