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[Libc][dlib][armlibc] add gmtime_r api

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zylx
2018-10-26 11:03:55 +08:00
parent 86ad69032f
commit 3bf68f2f42
6 changed files with 150 additions and 63 deletions
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1
components/libc/compilers/dlib/sys/time.h
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@@ -52,6 +52,7 @@ struct timezone {
};
int gettimeofday(struct timeval *tp, void *ignore);
struct tm *gmtime_r(const time_t *timep, struct tm *r);
#ifdef __cplusplus
}

74
components/libc/compilers/dlib/time.c
View File

@@ -9,6 +9,27 @@
#include <sys/time.h>
#include <rtthread.h>
/* days per month -- nonleap! */
const short __spm[13] =
{
0,
(31),
(31 + 28),
(31 + 28 + 31),
(31 + 28 + 31 + 30),
(31 + 28 + 31 + 30 + 31),
(31 + 28 + 31 + 30 + 31 + 30),
(31 + 28 + 31 + 30 + 31 + 30 + 31),
(31 + 28 + 31 + 30 + 31 + 30 + 31 + 31),
(31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30),
(31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31),
(31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30),
(31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31),
};
/* seconds per day */
#define SPD 24*60*60
#ifdef RT_USING_DEVICE
int gettimeofday(struct timeval *tp, void *ignore)
{
@@ -78,6 +99,59 @@ __time32_t __time32(__time32_t *t)
return time_now;
}
static int __isleap(int year)
{
/* every fourth year is a leap year except for century years that are
* not divisible by 400. */
/* return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
return (!(year % 4) && ((year % 100) || !(year % 400)));
}
/**
* This function will convert Time (Restartable)
*
* @param timep the timestamp
* @param the structure to stores information
*
* @return the structure to stores information
*
*/
struct tm *gmtime_r(const time_t *timep, struct tm *r)
{
time_t i;
register time_t work = *timep % (SPD);
r->tm_sec = work % 60;
work /= 60;
r->tm_min = work % 60;
r->tm_hour = work / 60;
work = *timep / (SPD);
r->tm_wday = (4 + work) % 7;
for (i = 1970;; ++i)
{
register time_t k = __isleap(i) ? 366 : 365;
if (work >= k)
work -= k;
else
break;
}
r->tm_year = i - 1900;
r->tm_yday = work;
r->tm_mday = 1;
if (__isleap(i) && (work > 58))
{
if (work == 59)
r->tm_mday = 2; /* 29.2. */
work -= 1;
}
for (i = 11; i && (__spm[i] > work); --i)
;
r->tm_mon = i;
r->tm_mday += work - __spm[i];
return r;
}
RT_WEAK clock_t clock(void)
{
return rt_tick_get();