1 /** 2 * Copyright © 2019 IBM Corporation 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #include "bcd_time.hpp" 17 18 #include <fmt/format.h> 19 #include <time.h> 20 21 #include <phosphor-logging/log.hpp> 22 23 namespace openpower 24 { 25 namespace pels 26 { 27 28 bool BCDTime::operator==(const BCDTime& right) const 29 { 30 return (yearMSB == right.yearMSB) && (yearLSB == right.yearLSB) && 31 (month == right.month) && (day == right.day) && 32 (hour == right.hour) && (minutes == right.minutes) && 33 (seconds == right.seconds) && (hundredths == right.hundredths); 34 } 35 36 bool BCDTime::operator!=(const BCDTime& right) const 37 { 38 return !(*this == right); 39 } 40 41 BCDTime getBCDTime(std::chrono::time_point<std::chrono::system_clock>& time) 42 { 43 BCDTime bcd; 44 45 using namespace std::chrono; 46 time_t t = system_clock::to_time_t(time); 47 tm* localTime = localtime(&t); 48 assert(localTime != nullptr); 49 50 int year = 1900 + localTime->tm_year; 51 bcd.yearMSB = toBCD(year / 100); 52 bcd.yearLSB = toBCD(year % 100); 53 bcd.month = toBCD(localTime->tm_mon + 1); 54 bcd.day = toBCD(localTime->tm_mday); 55 bcd.hour = toBCD(localTime->tm_hour); 56 bcd.minutes = toBCD(localTime->tm_min); 57 bcd.seconds = toBCD(localTime->tm_sec); 58 59 auto ms = duration_cast<milliseconds>(time.time_since_epoch()).count(); 60 int hundredths = (ms % 1000) / 10; 61 bcd.hundredths = toBCD(hundredths); 62 63 return bcd; 64 } 65 66 BCDTime getBCDTime(uint64_t epochMS) 67 { 68 std::chrono::milliseconds ms{epochMS}; 69 std::chrono::time_point<std::chrono::system_clock> time{ms}; 70 71 return getBCDTime(time); 72 } 73 74 uint64_t getMillisecondsSinceEpoch(const BCDTime& bcdTime) 75 { 76 // Convert a UTC tm struct to a UTC time_t struct to a timepoint. 77 int year = (fromBCD(bcdTime.yearMSB) * 100) + fromBCD(bcdTime.yearLSB); 78 tm utcTime; 79 utcTime.tm_year = year - 1900; 80 utcTime.tm_mon = fromBCD(bcdTime.month) - 1; 81 utcTime.tm_mday = fromBCD(bcdTime.day); 82 utcTime.tm_hour = fromBCD(bcdTime.hour); 83 utcTime.tm_min = fromBCD(bcdTime.minutes); 84 utcTime.tm_sec = fromBCD(bcdTime.seconds); 85 utcTime.tm_isdst = 0; 86 87 time_t t = timegm(&utcTime); 88 auto timepoint = std::chrono::system_clock::from_time_t(t); 89 int milliseconds = fromBCD(bcdTime.hundredths) * 10; 90 timepoint += std::chrono::milliseconds(milliseconds); 91 92 return std::chrono::duration_cast<std::chrono::milliseconds>( 93 timepoint.time_since_epoch()) 94 .count(); 95 } 96 97 Stream& operator>>(Stream& s, BCDTime& time) 98 { 99 s >> time.yearMSB >> time.yearLSB >> time.month >> time.day >> time.hour; 100 s >> time.minutes >> time.seconds >> time.hundredths; 101 return s; 102 } 103 104 Stream& operator<<(Stream& s, const BCDTime& time) 105 { 106 s << time.yearMSB << time.yearLSB << time.month << time.day << time.hour; 107 s << time.minutes << time.seconds << time.hundredths; 108 return s; 109 } 110 111 } // namespace pels 112 } // namespace openpower 113