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