mirror of
https://github.com/jart/cosmopolitan.git
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2046c0d2ae
- Expand redbean UNIX module - Expand redbean documentation - Ensure Lua copyright is embedded in binary - Increase the PATH_MAX limit especially on NT - Use column major sorting for linenoise completions - Fix some suboptimalities in redbean's new UNIX API - Figured out right flags for Multics newline in raw mode
79 lines
3.3 KiB
C
79 lines
3.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net 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/calls/internal.h"
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#include "libc/calls/sig.internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/errno.h"
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#include "libc/limits.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/errors.h"
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#include "libc/nt/nt/time.h"
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#include "libc/nt/synchronization.h"
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#include "libc/sysv/errfuns.h"
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textwindows noinstrument int sys_nanosleep_nt(const struct timespec *req,
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struct timespec *rem) {
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int rc;
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bool alertable;
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uint32_t slice;
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int64_t ms, sec, nsec;
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if (__builtin_mul_overflow(req->tv_sec, 1000, &ms) ||
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__builtin_add_overflow(ms, req->tv_nsec / 1000000, &ms)) {
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ms = INT64_MAX;
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}
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if (!ms && (req->tv_sec || req->tv_nsec)) {
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ms = 1;
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}
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rc = 0;
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do {
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if (!__time_critical && _check_interrupts(false, g_fds.p)) {
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rc = eintr();
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break;
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}
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slice = MIN(__SIG_POLLING_INTERVAL_MS, ms);
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if (__time_critical) {
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alertable = false;
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} else {
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alertable = true;
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POLLTRACE("sys_nanosleep_nt polling for %'ldms of %'ld");
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}
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if (SleepEx(slice, alertable) == kNtWaitIoCompletion) {
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POLLTRACE("IOCP EINTR");
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continue;
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}
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ms -= slice;
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} while (ms > 0);
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ms = MAX(ms, 0);
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if (rem) {
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sec = ms / 1000;
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nsec = ms % 1000 * 1000000000;
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rem->tv_nsec -= nsec;
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if (rem->tv_nsec < 0) {
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--rem->tv_sec;
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rem->tv_nsec = 1000000000 - rem->tv_nsec;
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}
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rem->tv_sec -= sec;
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if (rem->tv_sec < 0) {
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rem->tv_sec = 0;
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rem->tv_nsec = 0;
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}
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}
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return rc;
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}
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