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Make fixes and improvements

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- Introduce __assert_disable global
- Improve strsignal() thread safety
- Make system call tracing thread safe
- Fix SO_RCVTIMEO / SO_SNDTIMEO on Windows
- Refactor DescribeFoo() functions into one place
- Fix fork() on Windows when TLS and MAP_STACK exist
- Round upwards in setsockopt(SO_RCVTIMEO) on Windows
- Disable futexes on OpenBSD which seem extremely broken
- Implement a better kludge for monotonic time on Windows
This commit is contained in:
Justine Tunney 2022-06-25 18:17:31 -07:00
parent 5d837c4e7c
commit fbc053e018
186 changed files with 1836 additions and 1325 deletions
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62
libc/intrin/describesigset.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2021 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/popcnt.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/kprintf.h"
#include "libc/str/str.h"
const char *(DescribeSigset)(char buf[64], int rc, const sigset_t *ss) {
bool gotsome;
int i, n, sig;
sigset_t sigset;
if (rc == -1) return "n/a";
if (!ss) return "NULL";
if ((!IsAsan() && kisdangerous(ss)) ||
(IsAsan() && !__asan_is_valid(ss, sizeof(*ss)))) {
ksnprintf(buf, 64, "%p", ss);
return buf;
}
i = 0;
n = 64;
sigset = *ss;
gotsome = false;
if (popcnt(sigset.__bits[0]) + popcnt(sigset.__bits[1]) > 64) {
i += ksnprintf(buf + i, n - i, "~");
sigset.__bits[0] = ~sigset.__bits[0];
sigset.__bits[1] = ~sigset.__bits[1];
}
i += ksnprintf(buf + i, n - i, "{");
for (sig = 1; sig < 128; ++sig) {
if (sigismember(&sigset, sig)) {
if (gotsome) {
sig += ksnprintf(buf + sig, n - sig, ", ");
} else {
gotsome = true;
}
sig += ksnprintf(buf + sig, n - sig, "%s", strsignal(sig));
}
}
i += ksnprintf(buf + i, n - i, "}");
return buf;
}