1 /*
2 * SysDB - src/core/time.c
3 * Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #if HAVE_CONFIG_H
29 # include "config.h"
30 #endif /* HAVE_CONFIG_H */
32 #include "core/time.h"
34 #include <time.h>
36 #include <string.h>
38 /*
39 * public API
40 */
42 sdb_time_t
43 sdb_gettime(void)
44 {
45 struct timespec ts_now = { 0, 0 };
47 if (clock_gettime(CLOCK_REALTIME, &ts_now))
48 return 0;
49 return TIMESPEC_TO_SDB_TIME(ts_now);
50 } /* sdb_gettime */
52 int
53 sdb_sleep(sdb_time_t reg, sdb_time_t *rem)
54 {
55 struct timespec ts_reg, ts_rem = { 0, 0 };
56 int status;
58 ts_reg.tv_sec = (time_t)SDB_TIME_TO_SECS(reg);
59 ts_reg.tv_nsec = (long int)(reg % (sdb_time_t)1000000000);
61 status = nanosleep(&ts_reg, &ts_rem);
62 if (rem)
63 *rem = TIMESPEC_TO_SDB_TIME(ts_rem);
64 return status;
65 } /* sdb_sleep */
67 size_t
68 sdb_strftime(char *s, size_t len, const char *format, sdb_time_t t)
69 {
70 time_t tstamp;
71 struct tm tm;
73 memset(&tm, 0, sizeof(tm));
75 tstamp = (time_t)SDB_TIME_TO_SECS(t);
76 if (! localtime_r (&tstamp, &tm))
77 return 0;
79 return strftime(s, len, format, &tm);
80 } /* sdb_strftime */
82 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */