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Improve quality of our ANSI C clock() function

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It now works most excellently across all supported operating
sytsems (earlier it didn't work on NT and XNU). Demo code is
available in examples/clock.c and this change also adds some
of the newer ANSI C time functions like timespec_get(), plus
timespec_getres() which hasn't even come out yet as it's C23
This commit is contained in:
Justine Tunney 2022-09-05 21:43:49 -07:00
parent 7ff0ea8c13
commit 12d9e1e128
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GPG key ID: BE714B4575D6E328
24 changed files with 254 additions and 76 deletions
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5
libc/calls/clock_getres.c
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@ -25,8 +25,6 @@
#include "libc/sysv/errfuns.h"
#include "libc/time/time.h"
int sys_clock_getres(int, struct timespec *) hidden;
static int sys_clock_getres_poly(int clock, struct timespec *ts, int64_t real) {
if (clock == CLOCK_REALTIME) {
ts->tv_sec = 0;
@ -65,6 +63,7 @@ int clock_getres(int clock, struct timespec *ts) {
} else {
rc = sys_clock_getres(clock, ts);
}
STRACE("clock_getres(%d, [%s]) → %d% m", clock, DescribeTimespec(rc, ts), rc);
STRACE("clock_getres(%s, [%s]) → %d% m", DescribeClockName(clock),
DescribeTimespec(rc, ts), rc);
return rc;
}