summaryrefslogtreecommitdiffstats
path: root/include/timeutils.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
commitcfe5e3905201349e9cf3f95d52ff4bd100bde37d (patch)
treed0baf160cbee3195249d095f85e52d20c21acf02 /include/timeutils.h
parentInitial commit. (diff)
downloadutil-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.tar.xz
util-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.zip
Adding upstream version 2.39.3.upstream/2.39.3
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/timeutils.h')
-rw-r--r--include/timeutils.h105
1 files changed, 105 insertions, 0 deletions
diff --git a/include/timeutils.h b/include/timeutils.h
new file mode 100644
index 0000000..a195df8
--- /dev/null
+++ b/include/timeutils.h
@@ -0,0 +1,105 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ *
+ * First set of functions in this file are part of systemd, and were
+ * copied to util-linux at August 2013.
+ *
+ * Copyright 2010 Lennart Poettering
+ * Copyright (C) 2014 Karel Zak <kzak@redhat.com>
+ *
+ * This 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.
+ */
+#ifndef UTIL_LINUX_TIME_UTIL_H
+#define UTIL_LINUX_TIME_UTIL_H
+
+#include <stdio.h>
+#include <inttypes.h>
+#include <sys/time.h>
+
+typedef uint64_t usec_t;
+typedef uint64_t nsec_t;
+
+#define MSEC_PER_SEC 1000ULL
+#define USEC_PER_SEC 1000000ULL
+#define USEC_PER_MSEC 1000ULL
+#define NSEC_PER_SEC 1000000000ULL
+#define NSEC_PER_MSEC 1000000ULL
+#define NSEC_PER_USEC 1000ULL
+
+#define USEC_PER_MINUTE (60ULL*USEC_PER_SEC)
+#define NSEC_PER_MINUTE (60ULL*NSEC_PER_SEC)
+#define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE)
+#define NSEC_PER_HOUR (60ULL*NSEC_PER_MINUTE)
+#define USEC_PER_DAY (24ULL*USEC_PER_HOUR)
+#define NSEC_PER_DAY (24ULL*NSEC_PER_HOUR)
+#define USEC_PER_WEEK (7ULL*USEC_PER_DAY)
+#define NSEC_PER_WEEK (7ULL*NSEC_PER_DAY)
+#define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC)
+#define NSEC_PER_MONTH (2629800ULL*NSEC_PER_SEC)
+#define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC)
+#define NSEC_PER_YEAR (31557600ULL*NSEC_PER_SEC)
+
+#define FORMAT_TIMESTAMP_MAX ((4*4+1)+11+9+4+1) /* weekdays can be unicode */
+#define FORMAT_TIMESTAMP_RELATIVE_MAX 256
+#define FORMAT_TIMESPAN_MAX 64
+
+int parse_timestamp(const char *t, usec_t *usec);
+int get_gmtoff(const struct tm *tp);
+
+/* flags and masks for strxxx_iso() functions */
+enum {
+ ISO_DATE = (1 << 0),
+ ISO_TIME = (1 << 1),
+ ISO_TIMEZONE = (1 << 2),
+ ISO_DOTUSEC = (1 << 3),
+ ISO_COMMAUSEC = (1 << 4),
+ ISO_T = (1 << 5),
+ ISO_GMTIME = (1 << 6),
+ ISO_TIMESTAMP = ISO_DATE | ISO_TIME | ISO_TIMEZONE,
+ ISO_TIMESTAMP_T = ISO_TIMESTAMP | ISO_T,
+ ISO_TIMESTAMP_DOT = ISO_TIMESTAMP | ISO_DOTUSEC,
+ ISO_TIMESTAMP_DOT_T = ISO_TIMESTAMP_DOT | ISO_T,
+ ISO_TIMESTAMP_COMMA = ISO_TIMESTAMP | ISO_COMMAUSEC,
+ ISO_TIMESTAMP_COMMA_T = ISO_TIMESTAMP_COMMA | ISO_T,
+ ISO_TIMESTAMP_COMMA_G = ISO_TIMESTAMP_COMMA | ISO_GMTIME,
+ ISO_TIMESTAMP_COMMA_GT = ISO_TIMESTAMP_COMMA_G | ISO_T
+};
+
+#define CTIME_BUFSIZ 26
+#define ISO_BUFSIZ 42
+
+int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz);
+int strtm_iso(struct tm *tm, int flags, char *buf, size_t bufsz);
+int strtime_iso(const time_t *t, int flags, char *buf, size_t bufsz);
+
+#define UL_SHORTTIME_THISYEAR_HHMM (1 << 1)
+
+int strtime_short(const time_t *t, struct timeval *now, int flags, char *buf, size_t bufsz);
+
+#ifndef HAVE_TIMEGM
+extern time_t timegm(struct tm *tm);
+#endif
+
+static inline usec_t timeval_to_usec(const struct timeval *t)
+{
+ return t->tv_sec * USEC_PER_SEC + t->tv_usec;
+}
+
+static inline usec_t timespec_to_usec(const struct timespec *t)
+{
+ return t->tv_sec * USEC_PER_SEC + t->tv_nsec / NSEC_PER_USEC;
+}
+
+static inline struct timeval usec_to_timeval(usec_t t)
+{
+ struct timeval r = {
+ .tv_sec = t / USEC_PER_SEC,
+ .tv_usec = t % USEC_PER_SEC,
+ };
+ return r;
+}
+
+#endif /* UTIL_LINUX_TIME_UTIL_H */