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Add *NSYNC unit test suite

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This change also fixes the clock_nanosleep() api and polyfills futexes
on Windows, Mac, and NetBSD using exponential backoff.
This commit is contained in:
Justine Tunney 2022-10-07 21:29:40 -07:00
parent 3421b9a580
commit 9849b4c7ba
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GPG key ID: BE714B4575D6E328
51 changed files with 5505 additions and 1060 deletions
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68
third_party/nsync/testing/time_extra.c vendored Normal file
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/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
│vi: set et ft=c ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2016 Google Inc. │
│ │
│ Licensed under the Apache License, Version 2.0 (the "License"); │
│ you may not use this file except in compliance with the License. │
│ You may obtain a copy of the License at │
│ │
│ http://www.apache.org/licenses/LICENSE-2.0 │
│ │
│ Unless required by applicable law or agreed to in writing, software │
│ distributed under the License is distributed on an "AS IS" BASIS, │
│ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │
│ See the License for the specific language governing permissions and │
│ limitations under the License. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/weirdtypes.h"
#include "libc/errno.h"
#include "third_party/nsync/testing/smprintf.h"
#include "third_party/nsync/testing/time_extra.h"
#include "third_party/nsync/time.h"
// clang-format off
char *nsync_time_str (nsync_time t, int decimals) {
static const struct {
const char *suffix;
double multiplier;
} scale[] = {
{ "ns", 1.0e-9, },
{ "us", 1e-6, },
{ "ms", 1e-3, },
{ "s", 1.0, },
{ "hr", 3600.0, },
};
double s = nsync_time_to_dbl (t);
int i = 0;
while (i + 1 != sizeof (scale) / sizeof (scale[0]) && scale[i + 1].multiplier <= s) {
i++;
}
return (smprintf ("%.*f%s", decimals, s/scale[i].multiplier, scale[i].suffix));
}
int nsync_time_sleep_until (nsync_time abs_deadline) {
int result = 0;
nsync_time now;
now = nsync_time_now ();
if (nsync_time_cmp (abs_deadline, now) > 0) {
nsync_time remaining;
remaining = nsync_time_sleep (nsync_time_sub (abs_deadline, now));
if (nsync_time_cmp (remaining, nsync_time_zero) > 0) {
result = EINTR;
}
}
return (result);
}
double nsync_time_to_dbl (nsync_time t) {
return (((double) NSYNC_TIME_SEC (t)) + ((double) NSYNC_TIME_NSEC (t) * 1e-9));
}
nsync_time nsync_time_from_dbl (double d) {
time_t s = (time_t) d;
if (d < s) {
s--;
}
return (nsync_time_s_ns (s, (unsigned) ((d - (double) s) * 1e9)));
}