59 lines
3.0 KiB
C
59 lines
3.0 KiB
C
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/*-*- 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 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/internal.h"
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#include "libc/calls/struct/timespec.h"
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#include "libc/calls/struct/timeval.h"
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#include "libc/conv/conv.h"
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#include "libc/dce.h"
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#include "libc/macros.h"
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#include "libc/nt/enum/status.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/sock/internal.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Sleeps for a particular amount of time.
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*/
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int nanosleep(const struct timespec *req, struct timespec *rem) {
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long res, millis, hectonanos;
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if (!IsWindows()) {
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if (!IsXnu()) {
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return nanosleep$sysv(req, rem);
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} else {
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return select$sysv(0, 0, 0, 0, /* lool */
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&(struct timeval){req->tv_sec, req->tv_nsec / 1000});
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}
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} else {
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if (req->tv_sec && req->tv_nsec) {
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hectonanos = MAX(1, req->tv_sec * 10000000L + req->tv_nsec / 100L);
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} else {
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hectonanos = 1;
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}
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if (NtError(NtDelayExecution(true, &hectonanos))) {
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millis = hectonanos / 10000;
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res = SleepEx(millis, true);
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if (res == kNtWaitIoCompletion) return eintr();
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}
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return 0;
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}
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}
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