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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
80 lines
3.6 KiB
C
80 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/asan.internal.h"
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#include "libc/calls/struct/timespec.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/sysv/consts/clock.h"
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#include "libc/sysv/errfuns.h"
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#include "libc/time/time.h"
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static int sys_clock_getres_poly(int clock, struct timespec *ts, int64_t real,
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int64_t real_coarse, int64_t boot) {
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ts->tv_sec = 0;
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if (clock == CLOCK_REALTIME) {
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ts->tv_nsec = real;
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return 0;
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} else if (clock == CLOCK_REALTIME_COARSE) {
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ts->tv_nsec = real_coarse;
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return 0;
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} else if (clock == CLOCK_MONOTONIC) {
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ts->tv_nsec = 10;
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return 0;
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} else if (clock == CLOCK_BOOTTIME) {
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ts->tv_nsec = boot;
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return 0;
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} else {
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return einval();
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}
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}
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static int sys_clock_getres_nt(int clock, struct timespec *ts) {
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return sys_clock_getres_poly(clock, ts, 100, 1000000, 1000000);
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}
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static int sys_clock_getres_xnu(int clock, struct timespec *ts) {
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return sys_clock_getres_poly(clock, ts, 1000, 1000, 1000);
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}
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/**
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* Returns granularity of clock.
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*
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* @return 0 on success, or -1 w/ errno
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* @error EPERM if pledge() is in play without stdio promise
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* @error EINVAL if `clock` isn't supported on this system
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* @error EFAULT if `ts` points to bad memory
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*/
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int clock_getres(int clock, struct timespec *ts) {
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int rc;
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if (!ts || (IsAsan() && !__asan_is_valid_timespec(ts))) {
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rc = efault();
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} else if (clock == 127) {
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rc = einval(); // 127 is used by consts.sh to mean unsupported
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} else if (IsWindows()) {
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rc = sys_clock_getres_nt(clock, ts);
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} else if (IsXnu()) {
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rc = sys_clock_getres_xnu(clock, ts);
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} else {
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rc = sys_clock_getres(clock, ts);
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}
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STRACE("clock_getres(%s, [%s]) → %d% m", DescribeClockName(clock),
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DescribeTimespec(rc, ts), rc);
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return rc;
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}
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