Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 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 | |
| 17 | #include <ctype.h> |
| 18 | #include <limits.h> |
| 19 | #include <stdio.h> |
| 20 | #include <string.h> |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 21 | |
| 22 | #include <log/log_read.h> |
| 23 | |
Mark Salyzyn | facf94c | 2016-03-01 13:45:42 -0800 | [diff] [blame] | 24 | #include "log_portability.h" |
Mark Salyzyn | 6d753fa | 2016-03-10 08:25:33 -0800 | [diff] [blame] | 25 | |
| 26 | LIBLOG_ABI_PRIVATE const char log_time::default_format[] = "%m-%d %H:%M:%S.%q"; |
| 27 | LIBLOG_ABI_PRIVATE const timespec log_time::EPOCH = { 0, 0 }; |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 28 | |
| 29 | // Add %#q for fractional seconds to standard strptime function |
| 30 | |
Mark Salyzyn | 6d753fa | 2016-03-10 08:25:33 -0800 | [diff] [blame] | 31 | LIBLOG_ABI_PRIVATE char *log_time::strptime(const char *s, const char *format) { |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 32 | time_t now; |
| 33 | #ifdef __linux__ |
| 34 | *this = log_time(CLOCK_REALTIME); |
| 35 | now = tv_sec; |
| 36 | #else |
| 37 | time(&now); |
| 38 | tv_sec = now; |
| 39 | tv_nsec = 0; |
| 40 | #endif |
| 41 | |
| 42 | struct tm *ptm; |
Yabin Cui | 8a98535 | 2014-11-13 10:02:08 -0800 | [diff] [blame] | 43 | #if !defined(_WIN32) |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 44 | struct tm tmBuf; |
| 45 | ptm = localtime_r(&now, &tmBuf); |
| 46 | #else |
| 47 | ptm = localtime(&now); |
| 48 | #endif |
| 49 | |
| 50 | char fmt[strlen(format) + 1]; |
| 51 | strcpy(fmt, format); |
| 52 | |
| 53 | char *ret = const_cast<char *> (s); |
| 54 | char *cp; |
| 55 | for (char *f = cp = fmt; ; ++cp) { |
| 56 | if (!*cp) { |
| 57 | if (f != cp) { |
| 58 | ret = ::strptime(ret, f, ptm); |
| 59 | } |
| 60 | break; |
| 61 | } |
| 62 | if (*cp != '%') { |
| 63 | continue; |
| 64 | } |
| 65 | char *e = cp; |
| 66 | ++e; |
| 67 | #if (defined(__BIONIC__)) |
| 68 | if (*e == 's') { |
| 69 | *cp = '\0'; |
| 70 | if (*f) { |
| 71 | ret = ::strptime(ret, f, ptm); |
| 72 | if (!ret) { |
| 73 | break; |
| 74 | } |
| 75 | } |
| 76 | tv_sec = 0; |
| 77 | while (isdigit(*ret)) { |
| 78 | tv_sec = tv_sec * 10 + *ret - '0'; |
| 79 | ++ret; |
| 80 | } |
| 81 | now = tv_sec; |
Yabin Cui | 8a98535 | 2014-11-13 10:02:08 -0800 | [diff] [blame] | 82 | #if !defined(_WIN32) |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 83 | ptm = localtime_r(&now, &tmBuf); |
| 84 | #else |
| 85 | ptm = localtime(&now); |
| 86 | #endif |
| 87 | } else |
| 88 | #endif |
| 89 | { |
| 90 | unsigned num = 0; |
| 91 | while (isdigit(*e)) { |
| 92 | num = num * 10 + *e - '0'; |
| 93 | ++e; |
| 94 | } |
| 95 | if (*e != 'q') { |
| 96 | continue; |
| 97 | } |
| 98 | *cp = '\0'; |
| 99 | if (*f) { |
| 100 | ret = ::strptime(ret, f, ptm); |
| 101 | if (!ret) { |
| 102 | break; |
| 103 | } |
| 104 | } |
| 105 | unsigned long mul = NS_PER_SEC; |
| 106 | if (num == 0) { |
| 107 | num = INT_MAX; |
| 108 | } |
| 109 | tv_nsec = 0; |
| 110 | while (isdigit(*ret) && num && (mul > 1)) { |
| 111 | --num; |
| 112 | mul /= 10; |
| 113 | tv_nsec = tv_nsec + (*ret - '0') * mul; |
| 114 | ++ret; |
| 115 | } |
| 116 | } |
| 117 | f = cp = e; |
| 118 | ++f; |
| 119 | } |
| 120 | |
| 121 | if (ret) { |
| 122 | tv_sec = mktime(ptm); |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | // Upon error, place a known value into the class, the current time. |
| 127 | #ifdef __linux__ |
| 128 | *this = log_time(CLOCK_REALTIME); |
| 129 | #else |
| 130 | time(&now); |
| 131 | tv_sec = now; |
| 132 | tv_nsec = 0; |
| 133 | #endif |
| 134 | return ret; |
| 135 | } |
| 136 | |
Mark Salyzyn | 6d753fa | 2016-03-10 08:25:33 -0800 | [diff] [blame] | 137 | LIBLOG_ABI_PRIVATE log_time log_time::operator-= (const timespec &T) { |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 138 | // No concept of negative time, clamp to EPOCH |
| 139 | if (*this <= T) { |
| 140 | return *this = EPOCH; |
| 141 | } |
| 142 | |
| 143 | if (this->tv_nsec < (unsigned long int)T.tv_nsec) { |
| 144 | --this->tv_sec; |
| 145 | this->tv_nsec = NS_PER_SEC + this->tv_nsec - T.tv_nsec; |
| 146 | } else { |
| 147 | this->tv_nsec -= T.tv_nsec; |
| 148 | } |
| 149 | this->tv_sec -= T.tv_sec; |
| 150 | |
| 151 | return *this; |
| 152 | } |
| 153 | |
Mark Salyzyn | 6d753fa | 2016-03-10 08:25:33 -0800 | [diff] [blame] | 154 | LIBLOG_ABI_PRIVATE log_time log_time::operator+= (const timespec &T) { |
Mark Salyzyn | decd929 | 2014-10-13 14:13:18 -0700 | [diff] [blame] | 155 | this->tv_nsec += (unsigned long int)T.tv_nsec; |
| 156 | if (this->tv_nsec >= NS_PER_SEC) { |
| 157 | this->tv_nsec -= NS_PER_SEC; |
| 158 | ++this->tv_sec; |
| 159 | } |
| 160 | this->tv_sec += T.tv_sec; |
| 161 | |
| 162 | return *this; |
| 163 | } |
| 164 | |
Mark Salyzyn | 6d753fa | 2016-03-10 08:25:33 -0800 | [diff] [blame] | 165 | LIBLOG_ABI_PRIVATE log_time log_time::operator-= (const log_time &T) { |
Mark Salyzyn | fa3716b | 2014-02-14 16:05:05 -0800 | [diff] [blame] | 166 | // No concept of negative time, clamp to EPOCH |
| 167 | if (*this <= T) { |
| 168 | return *this = EPOCH; |
| 169 | } |
| 170 | |
| 171 | if (this->tv_nsec < T.tv_nsec) { |
| 172 | --this->tv_sec; |
| 173 | this->tv_nsec = NS_PER_SEC + this->tv_nsec - T.tv_nsec; |
| 174 | } else { |
| 175 | this->tv_nsec -= T.tv_nsec; |
| 176 | } |
| 177 | this->tv_sec -= T.tv_sec; |
| 178 | |
| 179 | return *this; |
| 180 | } |
Mark Salyzyn | decd929 | 2014-10-13 14:13:18 -0700 | [diff] [blame] | 181 | |
Mark Salyzyn | 6d753fa | 2016-03-10 08:25:33 -0800 | [diff] [blame] | 182 | LIBLOG_ABI_PRIVATE log_time log_time::operator+= (const log_time &T) { |
Mark Salyzyn | decd929 | 2014-10-13 14:13:18 -0700 | [diff] [blame] | 183 | this->tv_nsec += T.tv_nsec; |
| 184 | if (this->tv_nsec >= NS_PER_SEC) { |
| 185 | this->tv_nsec -= NS_PER_SEC; |
| 186 | ++this->tv_sec; |
| 187 | } |
| 188 | this->tv_sec += T.tv_sec; |
| 189 | |
| 190 | return *this; |
| 191 | } |