1//===- Unix/TimeValue.cpp - Unix TimeValue Implementation -------*- 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// This file implements the Unix specific portion of the TimeValue class. 11// 12//===----------------------------------------------------------------------===// 13 14//===----------------------------------------------------------------------===// 15//=== WARNING: Implementation here must contain only generic UNIX code that 16//=== is guaranteed to work on *all* UNIX variants. 17//===----------------------------------------------------------------------===// 18 19#include "Unix.h" 20 21namespace llvm { 22 using namespace sys; 23 24std::string TimeValue::str() const { 25 char buffer[32]; 26 27 time_t ourTime = time_t(this->toEpochTime()); 28#ifdef __hpux 29// note that the following line needs -D_REENTRANT on HP-UX to be picked up 30 asctime_r(localtime(&ourTime), buffer); 31#else 32 ::asctime_r(::localtime(&ourTime), buffer); 33#endif 34 35 std::string result(buffer); 36 return result.substr(0,24); 37} 38 39TimeValue TimeValue::now() { 40 struct timeval the_time; 41 timerclear(&the_time); 42 if (0 != ::gettimeofday(&the_time,0)) { 43 // This is *really* unlikely to occur because the only gettimeofday 44 // errors concern the timezone parameter which we're passing in as 0. 45 // In the unlikely case it does happen, just return MinTime, no error 46 // message needed. 47 return MinTime; 48 } 49 50 return TimeValue( 51 static_cast<TimeValue::SecondsType>( the_time.tv_sec + PosixZeroTime.seconds_ ), 52 static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec * 53 NANOSECONDS_PER_MICROSECOND ) ); 54} 55 56} 57