source/time/unix/utils.cpp

   1 #include <sys/resource.h>
   2 #include <sys/time.h>
   3 #include <cerrno>
   4 #include <msp/core/systemerror.h>
   5 #include "rawtime_private.h"
   6 #include "timedelta.h"
   7 #include "timestamp.h"
   8 #include "utils.h"
   9
  10 namespace Msp {
  11 namespace Time {
  12
  13 TimeStamp now()
  14 {
  15         timeval tv;
  16         gettimeofday(&tv, 0);
  17         return TimeStamp(timeval_to_rawtime(tv));
  18 }
  19
  20 TimeDelta get_cpu_time()
  21 {
  22         rusage ru;
  23         getrusage(RUSAGE_SELF, &ru);
  24         return (ru.ru_utime.tv_sec+ru.ru_stime.tv_sec)*sec + (ru.ru_utime.tv_usec+ru.ru_stime.tv_usec)*usec;
  25 }
  26
  27 void sleep(const TimeDelta &d)
  28 {
  29         timespec ts = rawtime_to_timespec(d.raw());
  30         while(nanosleep(&ts, 0)==-1)
  31                 if(errno!=EINTR)
  32                         throw system_error("nanosleep");
  33 }
  34
  35 } // namespace Time
  36 } // namespace Msp