1 files changed, 111 insertions, 0 deletions
diff --git a/src/basic/time-util.h b/src/basic/time-util.h
new file mode 100644
index 0000000000..7a64d454a0
--- /dev/null
+++ b/src/basic/time-util.h
@@ -0,0 +1,111 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdio.h>
+#include <inttypes.h>
+
+typedef uint64_t usec_t;
+typedef uint64_t nsec_t;
+
+#define NSEC_FMT "%" PRIu64
+#define USEC_FMT "%" PRIu64
+
+#include "macro.h"
+
+typedef struct dual_timestamp {
+        usec_t realtime;
+        usec_t monotonic;
+} dual_timestamp;
+
+#define USEC_INFINITY ((usec_t) -1)
+#define NSEC_INFINITY ((nsec_t) -1)
+
+#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))
+
+#define FORMAT_TIMESTAMP_MAX ((4*4+1)+11+9+4+1) /* weekdays can be unicode */
+#define FORMAT_TIMESTAMP_WIDTH 28 /* when outputting, assume this width */
+#define FORMAT_TIMESTAMP_RELATIVE_MAX 256
+#define FORMAT_TIMESPAN_MAX 64
+
+#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
+
+#define DUAL_TIMESTAMP_NULL ((struct dual_timestamp) { 0ULL, 0ULL })
+
+usec_t now(clockid_t 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);
+
+static inline bool dual_timestamp_is_set(dual_timestamp *ts) {
+        return ((ts->realtime > 0 && ts->realtime != USEC_INFINITY) ||
+                (ts->monotonic > 0 && ts->monotonic != USEC_INFINITY));
+}
+
+usec_t timespec_load(const struct timespec *ts) _pure_;
+struct timespec *timespec_store(struct timespec *ts, usec_t u);
+
+usec_t timeval_load(const struct timeval *tv) _pure_;
+struct timeval *timeval_store(struct timeval *tv, usec_t u);
+
+char *format_timestamp(char *buf, size_t l, usec_t t);
+char *format_timestamp_utc(char *buf, size_t l, usec_t t);
+char *format_timestamp_us(char *buf, size_t l, usec_t t);
+char *format_timestamp_us_utc(char *buf, size_t l, usec_t t);
+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);
+
+void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t);
+int dual_timestamp_deserialize(const char *value, dual_timestamp *t);
+
+int parse_timestamp(const char *t, usec_t *usec);
+
+int parse_sec(const char *t, usec_t *usec);
+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);
+
+clockid_t clock_boottime_or_monotonic(void);
+
+#define xstrftime(buf, fmt, tm) assert_se(strftime(buf, ELEMENTSOF(buf), fmt, tm) > 0)