libs/rt-thread-official
libs/rt-thread-official
4
0
Fork 0
mirror of https://github.com/RT-Thread/rt-thread.git synced 2025-01-18 21:03:32 +08:00
Code Issues Releases Wiki Activity

Merge pull request #4653 from mysterywolf/fixed-timezone

Browse Source 
[libc][time]增加手动设置固定时区的功能
This commit is contained in:
Bernard Xiong 2021-05-01 10:58:24 +08:00 committed by GitHub
commit be3b5a950f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 13 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
components/libc/Kconfig
View File

@ -55,8 +55,14 @@ endif
if RT_USING_LIBC != y
config RT_LIBC_USING_TIME
bool "Enable TIME FUNCTIONS WITHOUT COMPILER'S LIBC"
bool "Enable time functions without compiler's libc"
default y
endif
config RT_LIBC_FIXED_TIMEZONE
depends on (RT_LIBC_USING_TIME || RT_USING_LIBC)
int "Manually set a fixed time zone (UTC+)"
range -12 12
default 8
endmenu

14
components/libc/compilers/common/time.c
View File

@ -30,6 +30,10 @@
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#ifndef RT_LIBC_FIXED_TIMEZONE
#define RT_LIBC_FIXED_TIMEZONE 8 /* UTC+8 */
#endif
/* seconds per day */
#define SPD 24*60*60
@ -208,14 +212,11 @@ struct tm* gmtime(const time_t* t)
}
RTM_EXPORT(gmtime);
/*TODO: timezone */
struct tm* localtime_r(const time_t* t, struct tm* r)
{
time_t local_tz;
int utc_plus;
utc_plus = 8; /* GMT: UTC+8 */
local_tz = *t + utc_plus * 3600;
local_tz = *t + RT_LIBC_FIXED_TIMEZONE * 3600;
return gmtime_r(&local_tz, r);
}
RTM_EXPORT(localtime_r);
@ -227,15 +228,12 @@ struct tm* localtime(const time_t* t)
}
RTM_EXPORT(localtime);
/* TODO: timezone */
time_t mktime(struct tm * const t)
{
time_t timestamp;
int utc_plus;
utc_plus = 8; /* GMT: UTC+8 */
timestamp = timegm(t);
timestamp = timestamp - 3600 * utc_plus;
timestamp = timestamp - 3600 * RT_LIBC_FIXED_TIMEZONE;
return timestamp;
}
RTM_EXPORT(mktime);