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Merge pull request #1925 from qgyhd1234/gmtime_r

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[kernel][kservice] add rt_gmtime_r api
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Bernard Xiong 2018-10-27 14:28:40 +08:00 committed by GitHub
commit 125195c870
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4 changed files with 102 additions and 0 deletions
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1
components/libc/compilers/armlibc/sys/time.h
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@ -45,6 +45,7 @@ struct timezone {
};
int gettimeofday(struct timeval *tp, void *ignore);
struct tm *gmtime_r(const time_t *timep, struct tm *r);
#ifdef __cplusplus
}

12
components/libc/compilers/common/SConscript Normal file
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@ -0,0 +1,12 @@
from building import *
Import('rtconfig')
src = Glob('*.c')
cwd = GetCurrentDir()
group = []
CPPPATH = [cwd]
group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
Return('group')

88
components/libc/compilers/common/gmtime_r.c Normal file
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@ -0,0 +1,88 @@
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-10-26 zylx first version
*/
#if defined(__CC_ARM) || defined(__CLANG_ARM) || defined (__IAR_SYSTEMS_ICC__)
#include <sys/time.h>
/* seconds per day */
#define SPD 24*60*60
/* 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),
};
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;
}
#endif /* end of __CC_ARM or __CLANG_ARM or __IAR_SYSTEMS_ICC__ */

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
}