1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    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
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _BIONIC_TIME_CONVERSIONS_H
30#define _BIONIC_TIME_CONVERSIONS_H
31
32#include <errno.h>
33#include <time.h>
34#include <sys/cdefs.h>
35
36#include "private/bionic_constants.h"
37
38__BEGIN_DECLS
39
40__LIBC_HIDDEN__ bool timespec_from_timeval(timespec& ts, const timeval& tv);
41__LIBC_HIDDEN__ void timespec_from_ms(timespec& ts, const int ms);
42
43__LIBC_HIDDEN__ void timeval_from_timespec(timeval& tv, const timespec& ts);
44
45__LIBC_HIDDEN__ void absolute_timespec_from_timespec(timespec& abs_ts, const timespec& ts,
46                                                     clockid_t clock);
47
48__END_DECLS
49
50static inline int check_timespec(const timespec* ts, bool null_allowed) {
51  if (null_allowed && ts == nullptr) {
52    return 0;
53  }
54  // glibc just segfaults if you pass a null timespec.
55  // That seems a lot more likely to catch bad code than returning EINVAL.
56  if (ts->tv_nsec < 0 || ts->tv_nsec >= NS_PER_S) {
57    return EINVAL;
58  }
59  if (ts->tv_sec < 0) {
60    return ETIMEDOUT;
61  }
62  return 0;
63}
64
65#endif
66