contrib/llvm/lib/Support/Chrono.cpp

   1 //===- Support/Chrono.cpp - Utilities for Timing Manipulation ---*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/Support/Chrono.h"
  11 #include "llvm/Config/config.h"
  12 #include "llvm/Support/Format.h"
  13 #include "llvm/Support/raw_ostream.h"
  14
  15 namespace llvm {
  16
  17 using namespace sys;
  18
  19 static inline struct tm getStructTM(TimePoint<> TP) {
  20   struct tm Storage;
  21   std::time_t OurTime = toTimeT(TP);
  22
  23 #if defined(LLVM_ON_UNIX)
  24   struct tm *LT = ::localtime_r(&OurTime, &Storage);
  25   assert(LT);
  26   (void)LT;
  27 #endif
  28 #if defined(LLVM_ON_WIN32)
  29   int Error = ::localtime_s(&Storage, &OurTime);
  30   assert(!Error);
  31   (void)Error;
  32 #endif
  33
  34   return Storage;
  35 }
  36
  37 raw_ostream &operator<<(raw_ostream &OS, TimePoint<> TP) {
  38   struct tm LT = getStructTM(TP);
  39   char Buffer[sizeof("YYYY-MM-DD HH:MM:SS")];
  40   strftime(Buffer, sizeof(Buffer), "%Y-%m-%d %H:%M:%S", &LT);
  41   return OS << Buffer << '.'
  42             << format("%.9lu",
  43                       long((TP.time_since_epoch() % std::chrono::seconds(1))
  44                                .count()));
  45 }
  46
  47 } // namespace llvm