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 constexpr char detail::unit<std::ratio<3600>>::value[]; 20 constexpr char detail::unit<std::ratio<60>>::value[]; 21 constexpr char detail::unit<std::ratio<1>>::value[]; 22 constexpr char detail::unit<std::milli>::value[]; 23 constexpr char detail::unit<std::micro>::value[]; 24 constexpr char detail::unit<std::nano>::value[]; 25 26 static inline struct tm getStructTM(TimePoint<> TP) { 27 struct tm Storage; 28 std::time_t OurTime = toTimeT(TP); 29 30 #if defined(LLVM_ON_UNIX) 31 struct tm *LT = ::localtime_r(&OurTime, &Storage); 32 assert(LT); 33 (void)LT; 34 #endif 35 #if defined(LLVM_ON_WIN32) 36 int Error = ::localtime_s(&Storage, &OurTime); 37 assert(!Error); 38 (void)Error; 39 #endif 40 41 return Storage; 42 } 43 44 raw_ostream &operator<<(raw_ostream &OS, TimePoint<> TP) { 45 struct tm LT = getStructTM(TP); 46 char Buffer[sizeof("YYYY-MM-DD HH:MM:SS")]; 47 strftime(Buffer, sizeof(Buffer), "%Y-%m-%d %H:%M:%S", <); 48 return OS << Buffer << '.' 49 << format("%.9lu", 50 long((TP.time_since_epoch() % std::chrono::seconds(1)) 51 .count())); 52 } 53 54 } // namespace llvm 55