1 // Copyright 2010 Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // * Neither the name of Google Inc. nor the names of its contributors 14 // may be used to endorse or promote products derived from this software 15 // without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 /// \file utils/datetime.hpp 30 /// Provides date and time-related classes and functions. 31 32 #if !defined(UTILS_DATETIME_HPP) 33 #define UTILS_DATETIME_HPP 34 35 extern "C" { 36 #include <stdint.h> 37 } 38 39 #include <cstddef> 40 #include <ostream> 41 #include <string> 42 43 #include "utils/shared_ptr.hpp" 44 45 namespace utils { 46 namespace datetime { 47 48 49 /// Represents a time delta to describe deadlines. 50 class delta { 51 public: 52 /// The amount of seconds in the time delta. 53 int64_t seconds; 54 55 /// The amount of microseconds in the time delta. 56 unsigned long useconds; 57 58 delta(void); 59 delta(const int64_t, const unsigned long); 60 61 static delta from_microseconds(const int64_t); 62 int64_t to_microseconds(void) const; 63 64 bool operator==(const delta&) const; 65 bool operator!=(const delta&) const; 66 67 delta operator+(const delta&) const; 68 delta operator+=(const delta&); 69 }; 70 71 72 std::ostream& operator<<(std::ostream&, const delta&); 73 74 75 /// Represents a fixed date/time. 76 /// 77 /// Timestamps are immutable objects and therefore we can simply use a shared 78 /// pointer to hide the implementation type of the date. By not using an auto 79 /// pointer, we don't have to worry about providing our own copy constructor and 80 /// assignment opertor. 81 class timestamp { 82 struct impl; 83 84 /// Pointer to the shared internal implementation. 85 std::shared_ptr< impl > _pimpl; 86 87 timestamp(std::shared_ptr< impl >); 88 89 public: 90 static timestamp from_microseconds(const int64_t); 91 static timestamp from_values(const int, const int, const int, 92 const int, const int, const int, 93 const int); 94 static timestamp now(void); 95 96 std::string strftime(const std::string&) const; 97 int64_t to_microseconds(void) const; 98 int64_t to_seconds(void) const; 99 100 bool operator==(const timestamp&) const; 101 bool operator!=(const timestamp&) const; 102 103 delta operator-(const timestamp&) const; 104 }; 105 106 107 std::ostream& operator<<(std::ostream&, const timestamp&); 108 109 110 void set_mock_now(const int, const int, const int, const int, const int, 111 const int, const int); 112 113 114 } // namespace datetime 115 } // namespace utils 116 117 #endif // !defined(UTILS_DATETIME_HPP) 118