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[kernel][kservice] add rt_gmtime_r api

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zylx 2018-10-24 11:11:17 +08:00
parent fbaa86933d
commit ab5f1d49ce
2 changed files with 56 additions and 0 deletions
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1
include/rtthread.h
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@ -473,6 +473,7 @@ rt_int32_t rt_vsprintf(char *dest, const char *format, va_list arg_ptr);
rt_int32_t rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args); rt_int32_t rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args);
rt_int32_t rt_sprintf(char *buf, const char *format, ...); rt_int32_t rt_sprintf(char *buf, const char *format, ...);
rt_int32_t rt_snprintf(char *buf, rt_size_t size, const char *format, ...); rt_int32_t rt_snprintf(char *buf, rt_size_t size, const char *format, ...);
struct tm *rt_gmtime_r(const time_t *timep, struct tm *result);
#if defined(RT_USING_DEVICE) && defined(RT_USING_CONSOLE) #if defined(RT_USING_DEVICE) && defined(RT_USING_CONSOLE)
rt_device_t rt_console_set_device(const char *name); rt_device_t rt_console_set_device(const char *name);

55
src/kservice.c
View File

@ -1177,6 +1177,61 @@ void rt_kprintf(const char *fmt, ...)
RTM_EXPORT(rt_kprintf); RTM_EXPORT(rt_kprintf);
#endif #endif
struct tm *rt_gmtime_r(const time_t *timep, struct tm *result)
{
#define IS_LEAP_YEAR(year) (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0))
const rt_uint32_t mon_table[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
rt_uint32_t year = 1970, month = 0;
rt_uint32_t daycount = 0, second = 0, number = 0;
second = *timep % (24 * 60 * 60);
result->tm_hour = second / 3600;
result->tm_min = (second % 3600) / 60;
result->tm_sec = (second % 3600) % 60;
daycount = *timep / (24 * 60 * 60);
result->tm_wday = (daycount + 4) % 7;
if (daycount != 0)
{
while (daycount >= 365)
{
number = IS_LEAP_YEAR(year) ? 366 : 365;
if (daycount >= number)
{
daycount -= number;
year++;
}
else
break;
}
result->tm_year = year - 1900;
while (daycount >= 28)
{
if (month == 1 && IS_LEAP_YEAR(year))
{
if (daycount >= 29)
daycount -= 29;
else
break;
}
else
{
if (daycount >= mon_table[month])
daycount -= mon_table[month];
else
break;
}
month++;
}
result->tm_mon = month + 1;
result->tm_mday = daycount + 1;
}
return result;
}
RTM_EXPORT(rt_gmtime_r);
#ifdef RT_USING_HEAP #ifdef RT_USING_HEAP
/** /**
* This function allocates a memory block, which address is aligned to the * This function allocates a memory block, which address is aligned to the