Annotation of src/usr.bin/make/timestamp.h, Revision 1.9
1.1 espie 1: #ifndef TIMESTAMP_H
2: #define TIMESTAMP_H
3:
1.9 ! espie 4: /* $OpenBSD: timestamp.h,v 1.8 2013/04/22 07:21:52 espie 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34: * ts_set_out_of_date(t): set up t so that it is out-of-date.
35: * b = is_out_of_date(t): check whether t is out-of-date.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: * stamp = timestamp2time_t(t): extract time_t from timestamp.
40: * ts_set_from_time_t(d, t): create timestamp from time_t.
41: * ts_set_from_now(n): grab current date.
42: */
43:
1.3 espie 44: /* sysresult = set_times(name): set modification times on a file.
1.1 espie 45: * system call results.
46: */
47:
48: #define Init_Timestamp() ts_set_from_now(now)
49:
1.9 ! espie 50: #define TMIN (sizeof(time_t) == sizeof(int32_t) ? INT32_MIN : INT64_MIN)
! 51: #define ts_set_out_of_date(t) (t).tv_sec = TMIN, (t).tv_nsec = 0
! 52: #define is_out_of_date(t) ((t).tv_sec == TMIN && (t).tv_nsec == 0)
! 53:
1.1 espie 54: #define ts_set_from_stat(s, t) \
55: do { \
56: (t).tv_sec = (s).st_mtime; \
57: (t).tv_nsec = (s).st_mtimensec; \
58: if (is_out_of_date(t)) \
59: (t).tv_nsec++; \
60: } while (0)
61: #define is_strictly_before(t1, t2) timespeccmp(&(t1), &(t2), <)
62: #define ts_set_from_time_t(d, t) \
63: do { \
64: (t).tv_sec = d; \
65: (t).tv_nsec = 0; \
66: if (is_out_of_date(t)) \
67: (t).tv_nsec++; \
68: } while (0)
1.7 guenther 69: #define ts_set_from_now(n) clock_gettime(CLOCK_REALTIME, &(n))
1.1 espie 70: #define timestamp2time_t(t) ((t).tv_sec)
71:
72: extern int set_times(const char *);
73:
1.9 ! espie 74: extern struct timespec now; /* The time at the start of this whole
1.1 espie 75: * process */
1.9 ! espie 76: extern char *time_to_string(struct timespec t);
1.2 espie 77:
1.1 espie 78:
79: #endif