#include <stdexcept>  // std::domain_error()</stdexcept>

#include <cerrno>     // errno</cerrno>

#include "igs_resource_msg_from_err.h"

#include "igs_resource_sleep.h"

/*

1second=1,000milli_seconds=1,000,000micro_seconds=1,000,000,000nano_seconds

tv_sec(seconds)が負か、tv_nsec(nano_seconds)が0〜999,999,999範囲外、はエラー

*/

void igs::resource::sleep_sn(const time_t seconds, const long nano_seconds) {

  struct timespec req;

  req.tv_sec  = seconds;

  req.tv_nsec = nano_seconds;

  struct timespec rem;

  rem.tv_sec  = 0;

  rem.tv_nsec = 0;

  if (::nanosleep(&req, &rem) < 0) {

    throw std::domain_error(

        igs_resource_msg_from_err(TEXT("nanosleep(-)"), errno));

  }

}

/*

windows ::Sleep()の仕様にあわせるためだけの関数

1second = 1,000milli_seconds(ミリ秒)

*/

void igs::resource::sleep_m(const DWORD milli_seconds) {

  const time_t seconds    = milli_seconds / 1000;

  const long nano_seconds = (milli_seconds % 1000) * 1000000;

  // std::cout << "milli_seconds=" << milli_seconds << std::endl;

  // std::cout << "      seconds=" << seconds << std::endl;

  // std::cout << " nano_seconds=" << nano_seconds << std::endl;

  igs::resource::sleep_sn(seconds, nano_seconds);

}