cosmopolitan/libc/calls/nanosleep.c
Justine Tunney e7611a8476 Make improvements
- Get threads working on NetBSD
- Get threads working on OpenBSD
- Fix Emacs config for Emacs v28
- Improve --strace logging of sigset_t
- Improve --strace logging of struct stat
- Improve memory safety of DescribeThing functions
- Refactor auto stack allocation into LIBC_RUNTIME
- Introduce shell.com example which works on Windows
- Refactor __strace_thing into DescribeThing functions
- Document the CHECK macros and improve them in NDEBUG mode
- Rewrite MAP_STACK so it uses FreeBSD behavior across platforms
- Deprecate and discourage the use of MAP_GROWSDOWN (it's weird)
2022-05-12 06:45:36 -07:00

53 lines
2.8 KiB
C

/*-*- 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 2020 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/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/dce.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/sysv/errfuns.h"
/**
* Sleeps for a particular amount of time.
* @norestart
*/
noinstrument int nanosleep(const struct timespec *req, struct timespec *rem) {
int rc;
char buf[2][45];
if (!req) {
rc = efault();
} else if (req->tv_sec < 0 ||
!(0 <= req->tv_nsec && req->tv_nsec <= 999999999)) {
rc = einval();
} else if (!IsWindows() && !IsMetal() && !IsXnu()) {
rc = sys_nanosleep(req, rem);
} else if (IsXnu()) {
rc = sys_nanosleep_xnu(req, rem);
} else if (IsMetal()) {
rc = enosys(); /* TODO: Sleep on Metal */
} else {
rc = sys_nanosleep_nt(req, rem);
}
if (!__time_critical) {
STRACE("nanosleep(%s, [%s]) → %d% m",
DescribeTimespec(buf[0], sizeof(buf[0]), rc, req),
DescribeTimespec(buf[1], sizeof(buf[1]), rc, rem), rc);
}
return rc;
}