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47 lines
2.5 KiB
C
47 lines
2.5 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 2020 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/time/time.h"
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#include "libc/calls/struct/timeval.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Returns time as seconds from UNIX epoch.
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*
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* @param opt_out_ret can receive return value on success
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* @return seconds since epoch, or -1 w/ errno
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* @asyncsignalsafe
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*/
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int64_t time(int64_t *opt_out_ret) {
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int64_t secs;
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struct timeval tv;
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if (IsAsan() && opt_out_ret &&
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!__asan_is_valid(opt_out_ret, sizeof(*opt_out_ret))) {
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secs = efault();
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} else if (gettimeofday(&tv, 0) != -1) {
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secs = tv.tv_sec;
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if (opt_out_ret) {
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*opt_out_ret = secs;
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}
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} else {
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secs = -1;
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}
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return secs;
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}
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