1 /**
2 * collectd - src/utils_time.c
3 * Copyright (C) 2010 Florian octo Forster
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Florian octo Forster <ff at octo.it>
25 **/
27 #include "collectd.h"
28 #include "utils_time.h"
29 #include "plugin.h"
30 #include "common.h"
32 #if HAVE_CLOCK_GETTIME
33 cdtime_t cdtime (void) /* {{{ */
34 {
35 int status;
36 struct timespec ts = { 0, 0 };
38 status = clock_gettime (CLOCK_REALTIME, &ts);
39 if (status != 0)
40 {
41 char errbuf[1024];
42 ERROR ("cdtime: clock_gettime failed: %s",
43 sstrerror (errno, errbuf, sizeof (errbuf)));
44 return (0);
45 }
47 return (TIMESPEC_TO_CDTIME_T (&ts));
48 } /* }}} cdtime_t cdtime */
49 #else
50 /* Work around for Mac OS X which doesn't have clock_gettime(2). *sigh* */
51 cdtime_t cdtime (void) /* {{{ */
52 {
53 int status;
54 struct timeval tv = { 0, 0 };
56 status = gettimeofday (&tv, /* struct timezone = */ NULL);
57 if (status != 0)
58 {
59 char errbuf[1024];
60 ERROR ("cdtime: gettimeofday failed: %s",
61 sstrerror (errno, errbuf, sizeof (errbuf)));
62 return (0);
63 }
65 return (TIMEVAL_TO_CDTIME_T (&tv));
66 } /* }}} cdtime_t cdtime */
67 #endif
69 size_t cdtime_to_iso8601 (char *s, size_t max, cdtime_t t) /* {{{ */
70 {
71 struct timespec t_spec;
72 struct tm t_tm;
74 size_t len;
76 CDTIME_T_TO_TIMESPEC (t, &t_spec);
77 NORMALIZE_TIMESPEC (t_spec);
79 if (localtime_r ((time_t *)&t_spec.tv_sec, &t_tm) == NULL) {
80 char errbuf[1024];
81 ERROR ("cdtime_to_iso8601: localtime_r failed: %s",
82 sstrerror (errno, errbuf, sizeof (errbuf)));
83 return (0);
84 }
86 len = strftime (s, max, "%Y-%m-%dT%H:%M:%S", &t_tm);
87 if (len == 0)
88 return 0;
90 if (max - len > 2) {
91 int n = snprintf (s + len, max - len, ".%09i", (int)t_spec.tv_nsec);
92 len += (n < 0) ? 0
93 : (((size_t) n) < (max - len)) ? ((size_t) n)
94 : (max - len);
95 }
97 if (max - len > 3) {
98 size_t n = strftime (s + len, max - len, "%z", &t_tm);
99 len += (n < max - len) ? n : max - len;
100 }
102 s[max - 1] = '\0';
103 return len;
104 } /* }}} size_t cdtime_to_iso8601 */
106 /* vim: set sw=2 sts=2 et fdm=marker : */