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use C++11 functionality to determine wall time

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This commit is contained in:
Axel Kohlmeyer
2021-10-05 21:52:52 -04:00
parent fcdabe0002
commit b2c4f08bbc
2 changed files with 16 additions and 22 deletions
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21
src/platform.cpp
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@ -106,6 +106,10 @@ static const zip_info &find_zip_type(const std::string &file)
/* ------------------------------------------------------------------ */
// set reference time stamp during executable/library init.
// should provide better resolution than using epoch, if the system clock supports it.
static auto initial_time = std::chrono::steady_clock::now();
using namespace LAMMPS_NS;
// get CPU time
@ -156,22 +160,7 @@ double platform::cputime()
------------------------------------------------------------------------ */
double platform::walltime()
{
double wtime;
#if defined(_WIN32)
wtime = GetTickCount64() * 0.001;
#else
struct timeval tv;
gettimeofday(&tv, nullptr);
wtime = 1.0 * tv.tv_sec + 1.0e-6 * tv.tv_usec;
#endif
return wtime;
return std::chrono::duration<double>(std::chrono::steady_clock::now() - initial_time).count();
}
/* ----------------------------------------------------------------------