src/cpp/util/time.cc

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#include "src/cpp/util/time.h"

#include <grpc/support/time.h>

using std::chrono::duration_cast;
using std::chrono::nanoseconds;
using std::chrono::seconds;
using std::chrono::system_clock;

namespace grpc {

// TODO(yangg) prevent potential overflow.
void Timepoint2Timespec(const system_clock::time_point &from,
                        gpr_timespec *to) {
  system_clock::duration deadline = from.time_since_epoch();
  seconds secs = duration_cast<seconds>(deadline);
  nanoseconds nsecs = duration_cast<nanoseconds>(deadline - secs);
  to->tv_sec = secs.count();
  to->tv_nsec = nsecs.count();
}

system_clock::time_point Timespec2Timepoint(gpr_timespec t) {
  if (gpr_time_cmp(t, gpr_inf_future) == 0) {
    return system_clock::time_point::max();
  }
  system_clock::time_point tp;
  tp += duration_cast<system_clock::time_point::duration>(seconds(t.tv_sec));
  tp +=
      duration_cast<system_clock::time_point::duration>(nanoseconds(t.tv_nsec));
  return tp;
}

}  // namespace grpc