Clean up some sleep code

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Justine Tunney 2022-10-08 02:40:44 -07:00
parent 9849b4c7ba
commit 672ccda37c
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35 changed files with 310 additions and 598 deletions

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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 2022 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/assert.h"
#include "libc/calls/struct/timespec.h"
#include "libc/errno.h"
#include "libc/sysv/consts/clock.h"
/**
* Sleeps for specified delay.
*
* @return unslept time which may be non-zero if the call was interrupted
*/
struct timespec _timespec_sleep(struct timespec delay) {
int rc;
struct timespec remain;
if (!(rc = clock_nanosleep(CLOCK_REALTIME, 0, &delay, &remain))) {
return (struct timespec){0};
} else {
_npassert(rc == EINTR);
return remain;
}
}