minix/lib/liblwip/sys_arch.c
Thomas Cort e67fc5771d libc: add clock_getres()/clock_gettime() system calls.
In order to make it more clear that ticks should be used for timers
and realtime should be used for timestamps / displaying the date/time,
getuptime() was renamed to getticks() and getuptime2() was renamed to
getuptime().

Servers, drivers, libraries, tests, etc that use getuptime()/getuptime2()
have been updated. In instances where a realtime was calculated, the
calculation was changed to use realtime.

System calls clock_getres() and clock_gettime() were added to PM/libc.
2013-04-04 15:04:53 +02:00

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412 B
C

#include <sys/types.h>
#include <minix/sysutil.h>
#include <errno.h>
u32_t sys_jiffies(void)
{
clock_t ticks;
if (getticks(&ticks) == OK)
return ticks;
else
panic("getuptime() failed\n");
}
u32_t sys_now(void)
{
static u32_t hz;
u32_t jiffs;
if (!hz)
hz = sys_hz();
/* use ticks not realtime as sys_now() is used to calculate timers */
jiffs = sys_jiffies();
return jiffs * (1000 / hz);
}