TimeValue.inc revision 263508 
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  time_t OurTime = time_t(this->toEpochTime());
26  struct tm Storage;
27  struct tm *LT = ::localtime_r(&OurTime, &Storage);
28  assert(LT);
29  char Buffer[25];
30  strftime(Buffer, 25, "%b %e %H:%M %Y", LT);
31  return std::string(Buffer);
32}
33
34TimeValue TimeValue::now() {
35  struct timeval the_time;
36  timerclear(&the_time);
37  if (0 != ::gettimeofday(&the_time,0)) {
38    // This is *really* unlikely to occur because the only gettimeofday
39    // errors concern the timezone parameter which we're passing in as 0.
40    // In the unlikely case it does happen, just return MinTime, no error
41    // message needed.
42    return MinTime;
43  }
44
45  return TimeValue(
46    static_cast<TimeValue::SecondsType>( the_time.tv_sec +
47      PosixZeroTimeSeconds ),
48    static_cast<TimeValue::NanoSecondsType>( the_time.tv_usec *
49      NANOSECONDS_PER_MICROSECOND ) );
50}
51
52}
53