diff options
| author | Michael Biebl <biebl@debian.org> | 2021-10-01 23:05:04 +0200 |
|---|---|---|
| committer | Michael Biebl <biebl@debian.org> | 2021-10-01 23:05:04 +0200 |
| commit | e74c568b07b50b97873fb4ee1d776dedefbd54d6 (patch) | |
| tree | 3469f17ea9af91f7ff169b890633bda68b0cf76e /shared/systemd/src/basic/time-util.h | |
| parent | bfe522304da217296e2a61040f58e35ec5d6f3f2 (diff) | |
New upstream version 1.32.12 upstream/1.32.12
Diffstat (limited to 'shared/systemd/src/basic/time-util.h')
| -rw-r--r-- | shared/systemd/src/basic/time-util.h | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/shared/systemd/src/basic/time-util.h b/shared/systemd/src/basic/time-util.h deleted file mode 100644 index 89ee8b4a..00000000 --- a/shared/systemd/src/basic/time-util.h +++ /dev/null @@ -1,201 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1-or-later */ -#pragma once - -#include <inttypes.h> -#include <stdbool.h> -#include <stddef.h> -#include <stdint.h> -#include <stdio.h> -#include <time.h> - -typedef uint64_t usec_t; -typedef uint64_t nsec_t; - -#define PRI_NSEC PRIu64 -#define PRI_USEC PRIu64 -#define NSEC_FMT "%" PRI_NSEC -#define USEC_FMT "%" PRI_USEC - -#include "macro.h" - -typedef struct dual_timestamp { - usec_t realtime; - usec_t monotonic; -} dual_timestamp; - -typedef struct triple_timestamp { - usec_t realtime; - usec_t monotonic; - usec_t boottime; -} triple_timestamp; - -typedef enum TimestampStyle { - TIMESTAMP_PRETTY, - TIMESTAMP_US, - TIMESTAMP_UTC, - TIMESTAMP_US_UTC, - _TIMESTAMP_STYLE_MAX, - _TIMESTAMP_STYLE_INVALID = -1, -} TimestampStyle; - -#define USEC_INFINITY ((usec_t) UINT64_MAX) -#define NSEC_INFINITY ((nsec_t) UINT64_MAX) - -#define MSEC_PER_SEC 1000ULL -#define USEC_PER_SEC ((usec_t) 1000000ULL) -#define USEC_PER_MSEC ((usec_t) 1000ULL) -#define NSEC_PER_SEC ((nsec_t) 1000000000ULL) -#define NSEC_PER_MSEC ((nsec_t) 1000000ULL) -#define NSEC_PER_USEC ((nsec_t) 1000ULL) - -#define USEC_PER_MINUTE ((usec_t) (60ULL*USEC_PER_SEC)) -#define NSEC_PER_MINUTE ((nsec_t) (60ULL*NSEC_PER_SEC)) -#define USEC_PER_HOUR ((usec_t) (60ULL*USEC_PER_MINUTE)) -#define NSEC_PER_HOUR ((nsec_t) (60ULL*NSEC_PER_MINUTE)) -#define USEC_PER_DAY ((usec_t) (24ULL*USEC_PER_HOUR)) -#define NSEC_PER_DAY ((nsec_t) (24ULL*NSEC_PER_HOUR)) -#define USEC_PER_WEEK ((usec_t) (7ULL*USEC_PER_DAY)) -#define NSEC_PER_WEEK ((nsec_t) (7ULL*NSEC_PER_DAY)) -#define USEC_PER_MONTH ((usec_t) (2629800ULL*USEC_PER_SEC)) -#define NSEC_PER_MONTH ((nsec_t) (2629800ULL*NSEC_PER_SEC)) -#define USEC_PER_YEAR ((usec_t) (31557600ULL*USEC_PER_SEC)) -#define NSEC_PER_YEAR ((nsec_t) (31557600ULL*NSEC_PER_SEC)) - -/* We assume a maximum timezone length of 6. TZNAME_MAX is not defined on Linux, but glibc internally initializes this - * to 6. Let's rely on that. */ -#define FORMAT_TIMESTAMP_MAX (3U+1U+10U+1U+8U+1U+6U+1U+6U+1U) -#define FORMAT_TIMESTAMP_WIDTH 28U /* when outputting, assume this width */ -#define FORMAT_TIMESTAMP_RELATIVE_MAX 256U -#define FORMAT_TIMESPAN_MAX 64U - -#define TIME_T_MAX (time_t)((UINTMAX_C(1) << ((sizeof(time_t) << 3) - 1)) - 1) - -#define DUAL_TIMESTAMP_NULL ((struct dual_timestamp) {}) -#define TRIPLE_TIMESTAMP_NULL ((struct triple_timestamp) {}) - -usec_t now(clockid_t clock); -nsec_t now_nsec(clockid_t clock); - -usec_t map_clock_usec(usec_t from, clockid_t from_clock, clockid_t to_clock); - -dual_timestamp* dual_timestamp_get(dual_timestamp *ts); -dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u); -dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u); -dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, usec_t u); - -triple_timestamp* triple_timestamp_get(triple_timestamp *ts); -triple_timestamp* triple_timestamp_from_realtime(triple_timestamp *ts, usec_t u); - -#define DUAL_TIMESTAMP_HAS_CLOCK(clock) \ - IN_SET(clock, CLOCK_REALTIME, CLOCK_REALTIME_ALARM, CLOCK_MONOTONIC) - -#define TRIPLE_TIMESTAMP_HAS_CLOCK(clock) \ - IN_SET(clock, CLOCK_REALTIME, CLOCK_REALTIME_ALARM, CLOCK_MONOTONIC, CLOCK_BOOTTIME, CLOCK_BOOTTIME_ALARM) - -static inline bool timestamp_is_set(usec_t timestamp) { - return timestamp > 0 && timestamp != USEC_INFINITY; -} - -static inline bool dual_timestamp_is_set(const dual_timestamp *ts) { - return timestamp_is_set(ts->realtime) || - timestamp_is_set(ts->monotonic); -} - -static inline bool triple_timestamp_is_set(const triple_timestamp *ts) { - return timestamp_is_set(ts->realtime) || - timestamp_is_set(ts->monotonic) || - timestamp_is_set(ts->boottime); -} - -usec_t triple_timestamp_by_clock(triple_timestamp *ts, clockid_t clock); - -usec_t timespec_load(const struct timespec *ts) _pure_; -nsec_t timespec_load_nsec(const struct timespec *ts) _pure_; -struct timespec *timespec_store(struct timespec *ts, usec_t u); -struct timespec *timespec_store_nsec(struct timespec *ts, nsec_t n); - -usec_t timeval_load(const struct timeval *tv) _pure_; -struct timeval *timeval_store(struct timeval *tv, usec_t u); - -char *format_timestamp_style(char *buf, size_t l, usec_t t, TimestampStyle style); -char *format_timestamp_relative(char *buf, size_t l, usec_t t); -char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy); - -static inline char *format_timestamp(char *buf, size_t l, usec_t t) { - return format_timestamp_style(buf, l, t, TIMESTAMP_PRETTY); -} - -int parse_timestamp(const char *t, usec_t *usec); - -int parse_sec(const char *t, usec_t *usec); -int parse_sec_fix_0(const char *t, usec_t *usec); -int parse_sec_def_infinity(const char *t, usec_t *usec); -int parse_time(const char *t, usec_t *usec, usec_t default_unit); -int parse_nsec(const char *t, nsec_t *nsec); - -bool ntp_synced(void); - -int get_timezones(char ***l); -bool timezone_is_valid(const char *name, int log_level); - -bool clock_boottime_supported(void); -bool clock_supported(clockid_t clock); -clockid_t clock_boottime_or_monotonic(void); - -usec_t usec_shift_clock(usec_t, clockid_t from, clockid_t to); - -int get_timezone(char **timezone); - -time_t mktime_or_timegm(struct tm *tm, bool utc); -struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc); - -uint32_t usec_to_jiffies(usec_t usec); -usec_t jiffies_to_usec(uint32_t jiffies); - -bool in_utc_timezone(void); - -static inline usec_t usec_add(usec_t a, usec_t b) { - usec_t c; - - /* Adds two time values, and makes sure USEC_INFINITY as input results as USEC_INFINITY in output, and doesn't - * overflow. */ - - c = a + b; - if (c < a || c < b) /* overflow check */ - return USEC_INFINITY; - - return c; -} - -static inline usec_t usec_sub_unsigned(usec_t timestamp, usec_t delta) { - - if (timestamp == USEC_INFINITY) /* Make sure infinity doesn't degrade */ - return USEC_INFINITY; - if (timestamp < delta) - return 0; - - return timestamp - delta; -} - -static inline usec_t usec_sub_signed(usec_t timestamp, int64_t delta) { - if (delta < 0) - return usec_add(timestamp, (usec_t) (-delta)); - else - return usec_sub_unsigned(timestamp, (usec_t) delta); -} - -#if SIZEOF_TIME_T == 8 -/* The last second we can format is 31. Dec 9999, 1s before midnight, because otherwise we'd enter 5 digit year - * territory. However, since we want to stay away from this in all timezones we take one day off. */ -#define USEC_TIMESTAMP_FORMATTABLE_MAX ((usec_t) 253402214399000000) -#elif SIZEOF_TIME_T == 4 -/* With a 32bit time_t we can't go beyond 2038... */ -#define USEC_TIMESTAMP_FORMATTABLE_MAX ((usec_t) 2147483647000000) -#else -#error "Yuck, time_t is neither 4 nor 8 bytes wide?" -#endif - -int time_change_fd(void); - -const char* timestamp_style_to_string(TimestampStyle t) _const_; -TimestampStyle timestamp_style_from_string(const char *s) _pure_; |