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https://github.com/jart/cosmopolitan.git
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6e6fc38935
Commit bc6c183 introduced a bunch of discrepancies between what files
look like in the repo and what clang-format says they should look like.
However, there were already a few discrepancies prior to that. Most of
these discrepancies seemed to be unintentional, but a few of them were
load-bearing (e.g., a #include that violated header ordering needing
something to have been #defined by a 'later' #include.)
I opted to take what I hope is a relatively smooth-brained approach: I
reverted the .clang-format change, ran clang-format on the whole repo,
reapplied the .clang-format change, reran clang-format again, and then
reverted the commit that contained the first run. Thus the full effect
of this PR should only be to apply the changed formatting rules to the
repo, and from skimming the results, this seems to be the case.
My work can be checked by applying the short, manual commits, and then
rerunning the command listed in the autogenerated commits (those whose
messages I have prefixed auto:) and seeing if your results agree.
It might be that the other diffs should be fixed at some point but I'm
leaving that aside for now.
fd '\.c(c|pp)?$' --print0| xargs -0 clang-format -i
85 lines
3.5 KiB
C
85 lines
3.5 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 2021 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/runtime/clktck.h"
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#include "libc/calls/calls.h"
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#include "libc/dce.h"
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#include "libc/fmt/wintime.internal.h"
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#include "libc/intrin/getauxval.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/auxv.h"
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struct clockinfo_netbsd {
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int32_t hz; // number of clock ticks per second
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int32_t tick; // µs per tick
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int32_t tickadj; // skew rate for adjtime()
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int32_t stathz; // statistics clock frequency
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int32_t profhz; // profiling clock frequency
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};
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static int clk_tck;
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static dontinline int __clk_tck_init(void) {
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int x;
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int cmd[2];
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size_t len;
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struct clockinfo_netbsd clock;
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if (IsWindows()) {
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// MSVC defines CLK_TCK as 1000 but 1ms is obviously not the
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// scheduling quantum Windows actually uses. If we define it
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// as 30 rather than 1000, then clock_nanosleep is much more
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// accurately able to predict the duration of its busy waits
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x = 30;
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} else if (IsXnu() || IsOpenbsd()) {
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x = 100;
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} else if (IsFreebsd()) {
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x = 128;
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} else if (IsNetbsd()) {
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cmd[0] = 1; // CTL_KERN
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cmd[1] = 12; // KERN_CLOCKRATE
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len = sizeof(clock);
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if (sys_sysctl(cmd, 2, &clock, &len, NULL, 0) != -1) {
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x = clock.hz;
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} else {
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x = -1;
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}
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} else {
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x = __getauxval(AT_CLKTCK).value;
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}
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if (x < 1)
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x = 100;
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clk_tck = x;
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return x;
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}
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/**
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* Returns system clock ticks per second.
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*
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* The returned value is memoized. This function is intended to be
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* used via the `CLK_TCK` macro wrapper.
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*
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* The returned value is always greater than zero. It's usually 100
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* hertz which means each clock tick is 10 milliseconds long.
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*/
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int __clk_tck(void) {
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if (clk_tck) {
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return clk_tck;
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} else {
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return __clk_tck_init();
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}
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}
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