Line data    Source code

       1             : /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
       2             : 
       3             : #pragma once
       4             : 
       5             : /***
       6             :   This file is part of systemd.
       7             : 
       8             :   Copyright 2010 Lennart Poettering
       9             : 
      10             :   systemd is free software; you can redistribute it and/or modify it
      11             :   under the terms of the GNU Lesser General Public License as published by
      12             :   the Free Software Foundation; either version 2.1 of the License, or
      13             :   (at your option) any later version.
      14             : 
      15             :   systemd is distributed in the hope that it will be useful, but
      16             :   WITHOUT ANY WARRANTY; without even the implied warranty of
      17             :   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
      18             :   Lesser General Public License for more details.
      19             : 
      20             :   You should have received a copy of the GNU Lesser General Public License
      21             :   along with systemd; If not, see <http://www.gnu.org/licenses/>.
      22             : ***/
      23             : 
      24             : #include <stdio.h>
      25             : #include <inttypes.h>
      26             : 
      27             : typedef uint64_t usec_t;
      28             : typedef uint64_t nsec_t;
      29             : 
      30             : #define NSEC_FMT "%" PRIu64
      31             : #define USEC_FMT "%" PRIu64
      32             : 
      33             : #include "macro.h"
      34             : 
      35             : typedef struct dual_timestamp {
      36             :         usec_t realtime;
      37             :         usec_t monotonic;
      38             : } dual_timestamp;
      39             : 
      40             : #define USEC_INFINITY ((usec_t) -1)
      41             : #define NSEC_INFINITY ((nsec_t) -1)
      42             : 
      43             : #define MSEC_PER_SEC  1000ULL
      44             : #define USEC_PER_SEC  ((usec_t) 1000000ULL)
      45             : #define USEC_PER_MSEC ((usec_t) 1000ULL)
      46             : #define NSEC_PER_SEC  ((nsec_t) 1000000000ULL)
      47             : #define NSEC_PER_MSEC ((nsec_t) 1000000ULL)
      48             : #define NSEC_PER_USEC ((nsec_t) 1000ULL)
      49             : 
      50             : #define USEC_PER_MINUTE ((usec_t) (60ULL*USEC_PER_SEC))
      51             : #define NSEC_PER_MINUTE ((nsec_t) (60ULL*NSEC_PER_SEC))
      52             : #define USEC_PER_HOUR ((usec_t) (60ULL*USEC_PER_MINUTE))
      53             : #define NSEC_PER_HOUR ((nsec_t) (60ULL*NSEC_PER_MINUTE))
      54             : #define USEC_PER_DAY ((usec_t) (24ULL*USEC_PER_HOUR))
      55             : #define NSEC_PER_DAY ((nsec_t) (24ULL*NSEC_PER_HOUR))
      56             : #define USEC_PER_WEEK ((usec_t) (7ULL*USEC_PER_DAY))
      57             : #define NSEC_PER_WEEK ((nsec_t) (7ULL*NSEC_PER_DAY))
      58             : #define USEC_PER_MONTH ((usec_t) (2629800ULL*USEC_PER_SEC))
      59             : #define NSEC_PER_MONTH ((nsec_t) (2629800ULL*NSEC_PER_SEC))
      60             : #define USEC_PER_YEAR ((usec_t) (31557600ULL*USEC_PER_SEC))
      61             : #define NSEC_PER_YEAR ((nsec_t) (31557600ULL*NSEC_PER_SEC))
      62             : 
      63             : #define FORMAT_TIMESTAMP_MAX ((4*4+1)+11+9+4+1) /* weekdays can be unicode */
      64             : #define FORMAT_TIMESTAMP_WIDTH 28 /* when outputting, assume this width */
      65             : #define FORMAT_TIMESTAMP_RELATIVE_MAX 256
      66             : #define FORMAT_TIMESPAN_MAX 64
      67             : 
      68             : #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
      69             : 
      70             : #define DUAL_TIMESTAMP_NULL ((struct dual_timestamp) { 0ULL, 0ULL })
      71             : 
      72             : usec_t now(clockid_t clock);
      73             : 
      74             : dual_timestamp* dual_timestamp_get(dual_timestamp *ts);
      75             : dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u);
      76             : dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u);
      77             : 
      78         686 : static inline bool dual_timestamp_is_set(dual_timestamp *ts) {
      79        1372 :         return ((ts->realtime > 0 && ts->realtime != USEC_INFINITY) ||
      80         662 :                 (ts->monotonic > 0 && ts->monotonic != USEC_INFINITY));
      81             : }
      82             : 
      83             : usec_t timespec_load(const struct timespec *ts) _pure_;
      84             : struct timespec *timespec_store(struct timespec *ts, usec_t u);
      85             : 
      86             : usec_t timeval_load(const struct timeval *tv) _pure_;
      87             : struct timeval *timeval_store(struct timeval *tv, usec_t u);
      88             : 
      89             : char *format_timestamp(char *buf, size_t l, usec_t t);
      90             : char *format_timestamp_utc(char *buf, size_t l, usec_t t);
      91             : char *format_timestamp_us(char *buf, size_t l, usec_t t);
      92             : char *format_timestamp_us_utc(char *buf, size_t l, usec_t t);
      93             : char *format_timestamp_relative(char *buf, size_t l, usec_t t);
      94             : char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy);
      95             : 
      96             : void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t);
      97             : int dual_timestamp_deserialize(const char *value, dual_timestamp *t);
      98             : 
      99             : int parse_timestamp(const char *t, usec_t *usec);
     100             : 
     101             : int parse_sec(const char *t, usec_t *usec);
     102             : int parse_nsec(const char *t, nsec_t *nsec);
     103             : 
     104             : bool ntp_synced(void);
     105             : 
     106             : int get_timezones(char ***l);
     107             : bool timezone_is_valid(const char *name);
     108             : 
     109             : clockid_t clock_boottime_or_monotonic(void);
     110             : 
     111             : #define xstrftime(buf, fmt, tm) assert_se(strftime(buf, ELEMENTSOF(buf), fmt, tm) > 0)