text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2014 The Bitcoin developers
  // Copyright (c) 2016-2019 The PIVX developers
  // Copyright (c) 2019-2021 The PIVXL developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #if defined(HAVE_CONFIG_H)
  #include "config/pivxl-config.h"
  #endif
  
  #include "tinyformat.h"
  #include "utiltime.h"
  
  #include <atomic>
  #include <boost/date_time/posix_time/posix_time.hpp>
  #include <boost/thread.hpp>
  #include <ctime>
  #include <tinyformat.h>
  
  
  static std::atomic<int64_t> nMockTime(0); //!< For unit testing
  
  
  int64_t GetTime()
  {
      int64_t mocktime = nMockTime.load(std::memory_order_relaxed);
      if (mocktime) return mocktime;
  
      time_t now = time(nullptr);
      assert(now > 0);
      return now;
  }
  
  template <typename T>
  T GetTime()
  {
      const std::chrono::seconds mocktime{nMockTime.load(std::memory_order_relaxed)};
  
      return std::chrono::duration_cast<T>(
          mocktime.count() ?
          mocktime :
          std::chrono::microseconds{GetTimeMicros()});
  }
  template std::chrono::seconds GetTime();
  template std::chrono::milliseconds GetTime();
  template std::chrono::microseconds GetTime();
  
  void SetMockTime(int64_t nMockTimeIn)
  {
      nMockTime.store(nMockTimeIn, std::memory_order_relaxed);
  }
  
  int64_t GetMockTime()
  {
      return nMockTime.load(std::memory_order_relaxed);
  }
  
  int64_t GetTimeMillis()
  {
      int64_t now = (boost::posix_time::microsec_clock::universal_time() -
                     boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
      assert(now > 0);
      return now;
  }
  
  int64_t GetSystemTimeInSeconds()
  {
      return GetTimeMicros()/1000000;
  }
  
  int64_t GetTimeMicros()
  {
      int64_t now = (boost::posix_time::microsec_clock::universal_time() -
                     boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_microseconds();
      assert(now > 0);
      return now;
  }
  
  void MilliSleep(int64_t n)
  {
      boost::this_thread::sleep_for(boost::chrono::milliseconds(n));
  }
  
  std::string DurationToDHMS(int64_t nDurationTime)
  {
      int seconds = nDurationTime % 60;
      nDurationTime /= 60;
      int minutes = nDurationTime % 60;
      nDurationTime /= 60;
      int hours = nDurationTime % 24;
      int days = nDurationTime / 24;
      if (days)
          return strprintf("%dd %02dh:%02dm:%02ds", days, hours, minutes, seconds);
      if (hours)
          return strprintf("%02dh:%02dm:%02ds", hours, minutes, seconds);
      return strprintf("%02dm:%02ds", minutes, seconds);
  }
  
  std::string FormatISO8601DateTime(int64_t nTime) {
      struct tm ts;
      time_t time_val = nTime;
  #ifdef HAVE_GMTIME_R
      if (gmtime_r(&time_val, &ts) == nullptr) {
  #else
      if (gmtime_s(&ts, &time_val) != 0) {
  #endif
          return {};
      }
      return strprintf("%04i-%02i-%02iT%02i:%02i:%02iZ", ts.tm_year + 1900, ts.tm_mon + 1, ts.tm_mday, ts.tm_hour, ts.tm_min, ts.tm_sec);
  }
  
  std::string FormatISO8601DateTimeForBackup(int64_t nTime) {
      struct tm ts;
      time_t time_val = nTime;
  #ifdef HAVE_GMTIME_R
      if (gmtime_r(&time_val, &ts) == nullptr) {
  #else
      if (gmtime_s(&ts, &time_val) != 0) {
  #endif
          return {};
      }
      return strprintf(".%04i%02i%02iT%02i%02iZ", ts.tm_year + 1900, ts.tm_mon + 1, ts.tm_mday, ts.tm_hour, ts.tm_min);
  }
  
  std::string FormatISO8601Date(int64_t nTime) {
      struct tm ts;
      time_t time_val = nTime;
  #ifdef HAVE_GMTIME_R
      if (gmtime_r(&time_val, &ts) == nullptr) {
  #else
      if (gmtime_s(&ts, &time_val) != 0) {
  #endif
          return {};
      }
      return strprintf("%04i-%02i-%02i", ts.tm_year + 1900, ts.tm_mon + 1, ts.tm_mday);
  }
  
  std::string FormatISO8601Time(int64_t nTime) {
      struct tm ts;
      time_t time_val = nTime;
  #ifdef HAVE_GMTIME_R
      if (gmtime_r(&time_val, &ts) == nullptr) {
  #else
      if (gmtime_s(&ts, &time_val) != 0) {
  #endif
          return {};
      }
      return strprintf("%02i:%02i:%02iZ", ts.tm_hour, ts.tm_min, ts.tm_sec);
  }
  