| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #ifndef UTIL_TIME_UTIL_H | ||
| 2 | #define UTIL_TIME_UTIL_H | ||
| 3 | |||
| 4 | #include <stdbool.h> | ||
| 5 | #include <stddef.h> | ||
| 6 | #include <sys/stat.h> | ||
| 7 | #include <time.h> | ||
| 8 | #include "debug.h" | ||
| 9 | #include "macros.h" | ||
| 10 | |||
| 11 | #define TIME_STR_BUFSIZE (64) // sizeof("292271025015-12-01 23:59:00.999999999 +0400") | ||
| 12 | #define NS_PER_SECOND (1000000000L) | ||
| 13 | #define MS_PER_SECOND (1000L) | ||
| 14 | #define NS_PER_MS (1000000L) | ||
| 15 | #define US_PER_MS (1000L) | ||
| 16 | |||
| 17 | 42 | static inline const struct timespec *get_stat_mtime(const struct stat *st) | |
| 18 | { | ||
| 19 | #if defined(__APPLE__) | ||
| 20 | return &st->st_mtimespec; | ||
| 21 | #else | ||
| 22 | // https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_stat.h.html#tag_13_61_03 | ||
| 23 | 42 | return &st->st_mtim; | |
| 24 | #endif | ||
| 25 | } | ||
| 26 | |||
| 27 | 197 | static inline struct timespec timespec_subtract ( | |
| 28 | const struct timespec *lhs, | ||
| 29 | const struct timespec *rhs | ||
| 30 | ) { | ||
| 31 | 197 | BUG_ON(lhs->tv_nsec >= NS_PER_SECOND); | |
| 32 | 197 | BUG_ON(rhs->tv_nsec >= NS_PER_SECOND); | |
| 33 | 197 | time_t sec = lhs->tv_sec - rhs->tv_sec; | |
| 34 | 197 | long nsec = lhs->tv_nsec - rhs->tv_nsec; | |
| 35 | 394 | return (struct timespec) { | |
| 36 | 197 | .tv_sec = sec - (nsec < 0), | |
| 37 |
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197 | .tv_nsec = nsec + (nsec < 0 ? NS_PER_SECOND : 0), |
| 38 | }; | ||
| 39 | } | ||
| 40 | |||
| 41 | 7 | static inline int timespec_cmp(const struct timespec *a, const struct timespec *b) | |
| 42 | { | ||
| 43 | 7 | time_t sa = a->tv_sec; | |
| 44 | 7 | time_t sb = b->tv_sec; | |
| 45 | 7 | long na = a->tv_nsec; | |
| 46 | 7 | long nb = b->tv_nsec; | |
| 47 | 7 | BUG_ON(na >= NS_PER_SECOND); | |
| 48 | 7 | BUG_ON(nb >= NS_PER_SECOND); | |
| 49 | |||
| 50 | // Example #1: (sa == sb) && (na == nb): 0 + 0 = 0 | ||
| 51 | // Example #2: (sa < sb) && (na > nb): -2 + 1 = -1 | ||
| 52 | 7 | int r = 0; | |
| 53 |
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7 | r += (sa == sb) ? 0 : (sa < sb ? -2 : 2); |
| 54 |
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7 | r += (na == nb) ? 0 : (na < nb ? -1 : 1); |
| 55 | 7 | return r; | |
| 56 | } | ||
| 57 | |||
| 58 | 1 | static inline bool timespecs_equal(const struct timespec *a, const struct timespec *b) | |
| 59 | { | ||
| 60 |
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1 | return a->tv_sec == b->tv_sec && a->tv_nsec == b->tv_nsec; |
| 61 | } | ||
| 62 | |||
| 63 | char *timespec_to_str(const struct timespec *ts, char *buf, size_t bufsize) NONNULL_ARGS WARN_UNUSED_RESULT; | ||
| 64 | |||
| 65 | #endif | ||
| 66 |