X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Ftime.h;h=87adf17d75d40af2945ef392bb45129bb777d11b;hb=4878de5c7deb512bbdac4fdfc498907efa06fb7c;hp=894ab9259a135a3f7816d74e3475d268ec328b13;hpb=2a1135fa25ad1fcad3b395e795aa6d41afc90c54;p=lttng-tools.git

diff --git a/src/common/time.h b/src/common/time.h
index 894ab9259..87adf17d7 100644
--- a/src/common/time.h
+++ b/src/common/time.h
@@ -1,19 +1,8 @@
 /*
- * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
- * This library 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.
+ * SPDX-License-Identifier: LGPL-2.1-or-later
  *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
 #ifndef LTTNG_TIME_H
@@ -21,11 +10,24 @@
 
 #include <time.h>
 #include <stdbool.h>
+#include <common/macros.h>
+#include <common/compat/time.h>
+
+#define MSEC_PER_SEC    1000ULL
+#define NSEC_PER_SEC    1000000000ULL
+#define NSEC_PER_MSEC   1000000ULL
+#define NSEC_PER_USEC   1000ULL
+#define USEC_PER_SEC    1000000ULL
+#define USEC_PER_MSEC   1000ULL
+
+#define SEC_PER_MINUTE  60ULL
+#define MINUTE_PER_HOUR 60ULL
 
-#define MSEC_PER_SEC	1000ULL
-#define NSEC_PER_SEC	1000000000ULL
-#define NSEC_PER_MSEC	1000000ULL
-#define NSEC_PER_USEC	1000ULL
+#define USEC_PER_MINUTE (USEC_PER_SEC * SEC_PER_MINUTE)
+#define USEC_PER_HOURS  (USEC_PER_MINUTE * MINUTE_PER_HOUR)
+
+#define ISO8601_STR_LEN sizeof("YYYYmmddTHHMMSS+HHMM")
+#define DATETIME_STR_LEN sizeof("YYYYmmdd-HHMMSS")
 
 bool locale_supports_utf8(void);
 
@@ -49,4 +51,15 @@ int timespec_to_ms(struct timespec ts, unsigned long *ms);
  */
 struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b);
 
+/*
+ * Format a Unix timestamp to an ISO 8601 compatible timestamp of
+ * the form "YYYYmmddTHHMMSS+HHMM" in local time. `len` must >= to
+ * ISO8601_STR_LEN.
+ *
+ * Returns 0 on success, else -1 on error.
+ */
+int time_to_iso8601_str(time_t time, char *str, size_t len);
+
+int time_to_datetime_str(time_t time, char *str, size_t len);
+
 #endif /* LTTNG_TIME_H */