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 21 namespace llvm { 22 using namespace sys; 23 24 std::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 39 TimeValue 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
