Port: Add time.h compat for mingw
[babeltrace.git] / include / babeltrace / compat / time-internal.h
CommitLineData
58a2480d
MJ
1#ifndef _BABELTRACE_INCLUDE_COMPAT_TIME_H
2#define _BABELTRACE_INCLUDE_COMPAT_TIME_H
3
4/*
5 * babeltrace/compat/time.h
6 *
7 * Copyright (C) 2013 JP Ikaheimonen <jp_ikaheimonen@mentor.com>
8 * 2016 Michael Jeanson <mjeanson@efficios.com>
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * SOFTWARE.
27 */
28
29
30#include <time.h>
31#include <stdlib.h>
32
33#ifdef __MINGW32__
34
35#include <string.h>
36
37/*
38 * The Windows version of the time functions use one common tm structure per
39 * thread which makes them thread-safe. Implement the POSIX _r variants by
40 * copying this to a user supplied struct.
41 */
42
43static inline
44struct tm *bt_gmtime_r(const time_t *timep, struct tm *result)
45{
46 struct tm *local_res;
47
48 if (!result) {
49 goto error;
50 }
51
52 local_res = gmtime(timep);
53 if (!local_res) {
54 result = NULL;
55 goto error;
56 }
57
58 memcpy(result, local_res, sizeof(struct tm));
59
60error:
61 return result;
62}
63
64static inline
65struct tm *bt_localtime_r(const time_t *timep, struct tm *result)
66{
67 struct tm *local_res;
68
69 if (!result) {
70 goto error;
71 }
72
73 local_res = localtime(timep);
74 if (!local_res) {
75 result = NULL;
76 goto error;
77 }
78
79 memcpy(result, local_res, sizeof(struct tm));
80
81error:
82 return result;
83}
84
85#else /* __MINGW32__ */
86
87static inline
88struct tm *bt_gmtime_r(const time_t *timep, struct tm *result)
89{
90 return gmtime_r(timep, result);
91}
92
93static inline
94struct tm *bt_localtime_r(const time_t *timep, struct tm *result)
95{
96 return localtime_r(timep, result);
97}
98
99#endif /* __MINGW32__ */
100#endif /* _BABELTRACE_INCLUDE_COMPAT_TIME_H */
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