src/compat/time.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (C) 2013 JP Ikaheimonen <jp_ikaheimonen@mentor.com>
   5  * Copyright (C) 2016 Michael Jeanson <mjeanson@efficios.com>
   6  */
   7
   8 #ifndef _BABELTRACE_INCLUDE_COMPAT_TIME_H
   9 #define _BABELTRACE_INCLUDE_COMPAT_TIME_H
  10
  11 #include <time.h>
  12 #include <stdlib.h>
  13
  14 #ifdef __MINGW32__
  15
  16 #include <string.h>
  17
  18 /*
  19  * The Windows version of the time functions use one common tm structure per
  20  * thread which makes them thread-safe. Implement the POSIX _r variants by
  21  * copying this to a user supplied struct.
  22  */
  23
  24 static inline
  25 struct tm *bt_gmtime_r(const time_t *timep, struct tm *result)
  26 {
  27         struct tm *local_res;
  28
  29         if (!result) {
  30                 goto error;
  31         }
  32
  33         local_res = gmtime(timep);
  34         if (!local_res) {
  35                 result = NULL;
  36                 goto error;
  37         }
  38
  39         memcpy(result, local_res, sizeof(struct tm));
  40
  41 error:
  42         return result;
  43 }
  44
  45 static inline
  46 struct tm *bt_localtime_r(const time_t *timep, struct tm *result)
  47 {
  48         struct tm *local_res;
  49
  50         if (!result) {
  51                 goto error;
  52         }
  53
  54         local_res = localtime(timep);
  55         if (!local_res) {
  56                 result = NULL;
  57                 goto error;
  58         }
  59
  60         memcpy(result, local_res, sizeof(struct tm));
  61
  62 error:
  63         return result;
  64 }
  65
  66 #else /* __MINGW32__ */
  67
  68 static inline
  69 struct tm *bt_gmtime_r(const time_t *timep, struct tm *result)
  70 {
  71         return gmtime_r(timep, result);
  72 }
  73
  74 static inline
  75 struct tm *bt_localtime_r(const time_t *timep, struct tm *result)
  76 {
  77         return localtime_r(timep, result);
  78 }
  79
  80 #endif /* __MINGW32__ */
  81 #endif /* _BABELTRACE_INCLUDE_COMPAT_TIME_H */