Annotation of src/usr.bin/make/timestamp.h, Revision 1.12
1.1 espie 1: #ifndef TIMESTAMP_H
2: #define TIMESTAMP_H
3:
1.12 ! cheloha 4: /* $OpenBSD: timestamp.h,v 1.11 2023/08/19 04:21:06 guenther Exp $ */
1.1 espie 5:
6: /*
7: * Copyright (c) 2001 Marc Espie.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
19: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
22: * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: */
30:
31: /* This module handles time stamps on files in a relatively high-level way.
32: * Most of the interface is achieved through inlineable code.
33: *
34: * ts_set_out_of_date(t): set up t so that it is out-of-date.
35: * b = is_out_of_date(t): check whether t is out-of-date.
36: * ts_set_from_stat(s, t): grab date out of stat(2) buffer.
1.4 espie 37: * b = is_strictly_before(t1, t2):
1.1 espie 38: * check whether t1 is before t2.
39: * ts_set_from_time_t(d, t): create timestamp from time_t.
40: */
41:
1.10 espie 42: #define Init_Timestamp() clock_gettime(CLOCK_REALTIME, &starttime)
1.1 espie 43:
1.9 espie 44: #define TMIN (sizeof(time_t) == sizeof(int32_t) ? INT32_MIN : INT64_MIN)
45: #define ts_set_out_of_date(t) (t).tv_sec = TMIN, (t).tv_nsec = 0
46: #define is_out_of_date(t) ((t).tv_sec == TMIN && (t).tv_nsec == 0)
47:
1.1 espie 48: #define ts_set_from_stat(s, t) \
49: do { \
1.11 guenther 50: (t) = (s).st_mtim; \
1.1 espie 51: if (is_out_of_date(t)) \
52: (t).tv_nsec++; \
53: } while (0)
54: #define is_strictly_before(t1, t2) timespeccmp(&(t1), &(t2), <)
55: #define ts_set_from_time_t(d, t) \
56: do { \
57: (t).tv_sec = d; \
58: (t).tv_nsec = 0; \
59: if (is_out_of_date(t)) \
60: (t).tv_nsec++; \
61: } while (0)
62:
1.10 espie 63: extern struct timespec starttime; /* The time at the start
64: * of this whole process */
65: extern char *time_to_string(struct timespec *);
1.2 espie 66:
1.1 espie 67:
68: #endif