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Improve time/sleep accuracy on Windows

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It's now almost as good as Linux thanks to a Windows 8+ API.
This commit is contained in:
Justine Tunney 2023-11-18 01:57:44 -08:00
parent 72ac5f18d9
commit 8caf1b48a9
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GPG key ID: BE714B4575D6E328
9 changed files with 76 additions and 31 deletions
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18
libc/calls/clock_getres.c
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@ -25,14 +25,20 @@
#include "libc/sysv/errfuns.h"
#include "libc/time/time.h"
static int sys_clock_getres_poly(int clock, struct timespec *ts, int64_t real) {
static int sys_clock_getres_poly(int clock, struct timespec *ts, int64_t real,
int64_t real_coarse, int64_t boot) {
ts->tv_sec = 0;
if (clock == CLOCK_REALTIME) {
ts->tv_sec = 0;
ts->tv_nsec = real;
return 0;
} else if (clock == CLOCK_REALTIME_COARSE) {
ts->tv_nsec = real_coarse;
return 0;
} else if (clock == CLOCK_MONOTONIC) {
ts->tv_sec = 0;
ts->tv_nsec = 1;
ts->tv_nsec = 10;
return 0;
} else if (clock == CLOCK_BOOTTIME) {
ts->tv_nsec = boot;
return 0;
} else {
return einval();
@ -40,11 +46,11 @@ static int sys_clock_getres_poly(int clock, struct timespec *ts, int64_t real) {
}
static int sys_clock_getres_nt(int clock, struct timespec *ts) {
return sys_clock_getres_poly(clock, ts, 100);
return sys_clock_getres_poly(clock, ts, 100, 1000000, 1000000);
}
static int sys_clock_getres_xnu(int clock, struct timespec *ts) {
return sys_clock_getres_poly(clock, ts, 1000);
return sys_clock_getres_poly(clock, ts, 1000, 1000, 1000);
}
/**