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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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 are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <sys/cdefs.h>
30#include <sys/types.h>
31
32__BEGIN_DECLS
33
34#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
35#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
36#define timercmp(tvp, uvp, cmp) \
37 (((tvp)->tv_sec == (uvp)->tv_sec) ? ((tvp)->tv_usec cmp(uvp)->tv_usec) : ((tvp)->tv_sec cmp(uvp)->tv_sec))
38#define timeradd(a, b, out) \
39 do { \
40 (out)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
41 (out)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
42 if ((out)->tv_usec >= 1000000) { \
43 (out)->tv_sec++; \
44 (out)->tv_usec -= 1000000; \
45 } \
46 } while (0)
47#define timersub(a, b, out) \
48 do { \
49 (out)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
50 (out)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
51 if ((out)->tv_usec < 0) { \
52 (out)->tv_sec--; \
53 (out)->tv_usec += 1000000; \
54 } \
55 } while (0)
56
57struct timeval {
58 time_t tv_sec;
59 suseconds_t tv_usec;
60};
61
62struct timezone {
63 int tz_minuteswest;
64 int tz_dsttime;
65};
66
67int gettimeofday(struct timeval* __restrict__, void* __restrict__) __attribute__((nonnull(1)));
68
69__END_DECLS