{GPL, other}: Relicense to MIT license.

[collectd.git] / src / utils_time.h

diff --git a/src/utils_time.h b/src/utils_time.h
index fecf544..9b08e8e 100644 (file)
--- a/src/utils_time.h
+++ b/src/utils_time.h
@@ -1,19 +1,24 @@
 /**
  * collectd - src/utils_time.h
- * Copyright (C) 2010  Florian octo Forster
+ * Copyright (C) 2010       Florian octo Forster
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
  *
- * This program 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
- * General Public License for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Authors:
  *   Florian octo Forster <ff at octo.it>
@@ -32,7 +37,9 @@
  * manner is that comparing times and calculating differences is as simple as
  * it is with "time_t", i.e. a simple integer comparison / subtraction works.
  */
-typedef uint64_t cdtime_t;
+/* 
+ * cdtime_t is defined in "collectd.h" */
+/* typedef uint64_t cdtime_t; */
 
 /* 2^30 = 1073741824 */
 #define TIME_T_TO_CDTIME_T(t) (((cdtime_t) (t)) * 1073741824)
@@ -41,14 +48,34 @@ typedef uint64_t cdtime_t;
 #define CDTIME_T_TO_DOUBLE(t) (((double) (t)) / 1073741824.0)
 #define DOUBLE_TO_CDTIME_T(d) ((cdtime_t) ((d) * 1073741824.0))
 
-#define US_TO_CDTIME_T(us) ((cdtime_t) (((double) (us)) * 1073.741824))
-#define NS_TO_CDTIME_T(ns) ((cdtime_t) (((double) (ns)) * 1.073741824))
+#define MS_TO_CDTIME_T(ms) ((cdtime_t)    (((double) (ms)) * 1073741.824))
+#define CDTIME_T_TO_MS(t)  ((long)        (((double) (t))  / 1073741.824))
+#define US_TO_CDTIME_T(us) ((cdtime_t)    (((double) (us)) * 1073.741824))
+#define CDTIME_T_TO_US(t)  ((suseconds_t) (((double) (t))  / 1073.741824))
+#define NS_TO_CDTIME_T(ns) ((cdtime_t)    (((double) (ns)) * 1.073741824))
+#define CDTIME_T_TO_NS(t)  ((long)        (((double) (t))  / 1.073741824))
 
-#define TIMEVAL_TO_CDTIME_T(tv) (TIME_T_TO_CDTIME_T ((tv).tv_sec) \
-               + US_TO_CDTIME_T ((tv).tv_usec))
-#define TIMESPEC_TO_CDTIME_T(ts) (TIME_T_TO_CDTIME_T ((ts).tv_sec) \
-               + NS_TO_CDTIME_T ((ts).tv_nsec))
+#define CDTIME_T_TO_TIMEVAL(cdt,tvp) do {                                    \
+        (tvp)->tv_sec = CDTIME_T_TO_TIME_T (cdt);                            \
+        (tvp)->tv_usec = CDTIME_T_TO_US ((cdt) % 1073741824);                \
+} while (0)
+#define TIMEVAL_TO_CDTIME_T(tv) (TIME_T_TO_CDTIME_T ((tv)->tv_sec)           \
+    + US_TO_CDTIME_T ((tv)->tv_usec))
+
+#define CDTIME_T_TO_TIMESPEC(cdt,tsp) do {                                   \
+  (tsp)->tv_sec = CDTIME_T_TO_TIME_T (cdt);                                  \
+  (tsp)->tv_nsec = CDTIME_T_TO_NS ((cdt) % 1073741824);                      \
+} while (0)
+#define TIMESPEC_TO_CDTIME_T(ts) (TIME_T_TO_CDTIME_T ((ts)->tv_sec)           \
+    + NS_TO_CDTIME_T ((ts)->tv_nsec))
 
 cdtime_t cdtime (void);
 
+/* format a cdtime_t value in ISO 8601 format:
+ * returns the number of characters written to the string (not including the
+ * terminating null byte or 0 on error; the function ensures that the string
+ * is null terminated */
+size_t cdtime_to_iso8601 (char *s, size_t max, cdtime_t t);
+
 #endif /* UTILS_TIME_H */
+/* vim: set sw=2 sts=2 et : */