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Add unix domain socket support to redbean

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Justine Tunney 2022-06-22 03:04:25 -07:00
parent 4b23985b7f
commit fc097ac275
25 changed files with 594 additions and 172 deletions
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47
libc/calls/alarm.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 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/assert.h"
#include "libc/calls/struct/itimerval.h"
#include "libc/macros.internal.h"
#include "libc/math.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/itimer.h"
#include "libc/time/time.h"
/**
* Asks for single-shot SIGALRM to be raise()'d after interval.
*
* @param seconds until we get signal, or 0 to reset previous alarm()
* @return seconds previous alarm() had remaining, or -1u w/ errno
* @see setitimer()
* @asyncsignalsafe
*/
unsigned alarm(unsigned seconds) {
int rc;
struct itimerval it;
bzero(&it, sizeof(it));
it.it_value.tv_sec = seconds;
rc = setitimer(ITIMER_REAL, &it, &it);
assert(rc != -1);
if (!it.it_value.tv_sec && !it.it_value.tv_usec) {
return 0;
} else {
return MIN(1, it.it_value.tv_sec + (it.it_value.tv_usec > 5000000));
}
}