LLVM API Documentation

Unix/TimeValue.inc

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00001 //===- Unix/TimeValue.cpp - Unix TimeValue Implementation -------*- C++ -*-===//
00002 // 
00003 //                     The LLVM Compiler Infrastructure
00004 //
00005 // This file was developed by Reid Spencer and is distributed under the 
00006 // University of Illinois Open Source License. See LICENSE.TXT for details.
00007 // 
00008 //===----------------------------------------------------------------------===//
00009 //
00010 // This file implements the Unix specific portion of the TimeValue class.
00011 //
00012 //===----------------------------------------------------------------------===//
00013 
00014 //===----------------------------------------------------------------------===//
00015 //=== WARNING: Implementation here must contain only generic UNIX code that
00016 //===          is guaranteed to work on *all* UNIX variants.
00017 //===----------------------------------------------------------------------===//
00018 
00019 #include "Unix.h"
00020 
00021 namespace llvm {
00022   using namespace sys;
00023 
00024 std::string TimeValue::toString() const {
00025   char buffer[32];
00026 
00027   time_t ourTime = time_t(this->toEpochTime());
00028 #ifdef __hpux
00029 // note that the following line needs -D_REENTRANT on HP-UX to be picked up 
00030   asctime_r(localtime(&ourTime), buffer);
00031 #else
00032   ::asctime_r(::localtime(&ourTime), buffer);
00033 #endif
00034 
00035   std::string result(buffer);
00036   return result.substr(0,24);
00037 }
00038 
00039 TimeValue TimeValue::now() {
00040   struct timeval the_time;
00041   timerclear(&the_time);
00042   if (0 != ::gettimeofday(&the_time,0)) 
00043     ThrowErrno("Couldn't obtain time of day");
00044 
00045   return TimeValue(
00046     static_cast<TimeValue::SecondsType>( the_time.tv_sec ), 
00047     static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec * 
00048       NANOSECONDS_PER_MICROSECOND ) );
00049 }
00050 
00051 }