source: vendor/nemo/current/NEMOGCM/EXTERNAL/XIOS/extern/boost/include/boost/date_time/c_time.hpp @ 44

Last change on this file since 44 was 44, checked in by cholod, 12 years ago

Load NEMO_TMP into vendor/nemo/current.

File size: 3.8 KB
Line 
1#ifndef DATE_TIME_C_TIME_HPP___
2#define DATE_TIME_C_TIME_HPP___
3
4/* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
5 * Use, modification and distribution is subject to the
6 * Boost Software License, Version 1.0. (See accompanying
7 * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
8 * Author: Jeff Garland, Bart Garst
9 * $Date: 2010-01-10 14:17:23 -0500 (Sun, 10 Jan 2010) $
10 */
11
12
13/*! @file c_time.hpp
14  Provide workarounds related to the ctime header
15*/
16
17#include <ctime>
18#include <string> // to be able to convert from string literals to exceptions
19#include <stdexcept>
20#include <boost/throw_exception.hpp>
21#include <boost/date_time/compiler_config.hpp>
22
23//Work around libraries that don't put time_t and time in namespace std
24#ifdef BOOST_NO_STDC_NAMESPACE
25namespace std { using ::time_t; using ::time; using ::localtime;
26                using ::tm;  using ::gmtime; }
27#endif // BOOST_NO_STDC_NAMESPACE
28
29//The following is used to support high precision time clocks
30#ifdef BOOST_HAS_GETTIMEOFDAY
31#include <sys/time.h>
32#endif
33
34#ifdef BOOST_HAS_FTIME
35#include <time.h>
36#endif
37
38namespace boost {
39namespace date_time {
40  //! Provides a uniform interface to some 'ctime' functions
41  /*! Provides a uniform interface to some ctime functions and
42   * their '_r' counterparts. The '_r' functions require a pointer to a
43   * user created std::tm struct whereas the regular functions use a
44   * staticly created struct and return a pointer to that. These wrapper
45   * functions require the user to create a std::tm struct and send in a
46   * pointer to it. This struct may be used to store the resulting time.
47   * The returned pointer may or may not point to this struct, however,
48   * it will point to the result of the corresponding function.
49   * All functions do proper checking of the C function results and throw
50   * exceptions on error. Therefore the functions will never return NULL.
51   */
52  struct c_time {
53    public:
54#if defined(BOOST_DATE_TIME_HAS_REENTRANT_STD_FUNCTIONS)
55      //! requires a pointer to a user created std::tm struct
56      inline
57      static std::tm* localtime(const std::time_t* t, std::tm* result)
58      {
59        // localtime_r() not in namespace std???
60        result = localtime_r(t, result);
61        if (!result)
62          boost::throw_exception(std::runtime_error("could not convert calendar time to local time"));
63        return result;
64      }
65      //! requires a pointer to a user created std::tm struct
66      inline
67      static std::tm* gmtime(const std::time_t* t, std::tm* result)
68      {
69        // gmtime_r() not in namespace std???
70        result = gmtime_r(t, result);
71        if (!result)
72          boost::throw_exception(std::runtime_error("could not convert calendar time to UTC time"));
73        return result;
74      }
75#else // BOOST_HAS_THREADS
76
77#if (defined(_MSC_VER) && (_MSC_VER >= 1400))
78#pragma warning(push) // preserve warning settings
79#pragma warning(disable : 4996) // disable depricated localtime/gmtime warning on vc8
80#endif // _MSC_VER >= 1400
81      //! requires a pointer to a user created std::tm struct
82      inline
83      static std::tm* localtime(const std::time_t* t, std::tm* result)
84      {
85        result = std::localtime(t);
86        if (!result)
87          boost::throw_exception(std::runtime_error("could not convert calendar time to local time"));
88        return result;
89      }
90      //! requires a pointer to a user created std::tm struct
91      inline
92      static std::tm* gmtime(const std::time_t* t, std::tm* result)
93      {
94        result = std::gmtime(t);
95        if (!result)
96          boost::throw_exception(std::runtime_error("could not convert calendar time to UTC time"));
97        return result;
98      }
99#if (defined(_MSC_VER) && (_MSC_VER >= 1400))
100#pragma warning(pop) // restore warnings to previous state
101#endif // _MSC_VER >= 1400
102
103#endif // BOOST_HAS_THREADS
104  };
105}} // namespaces
106
107#endif // DATE_TIME_C_TIME_HPP___
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