mirror of
https://github.com/jart/cosmopolitan.git
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b0df6c1fce
Cosmopolitan now supports 104 time zones. They're embedded inside any binary that links the localtime() function. Doing so adds about 100kb to the binary size. This change also gets time zones working properly on Windows for the first time. It's not needed to have /etc/localtime exist on Windows, since we can get this information from WIN32. We're also now updated to the latest version of Paul Eggert's TZ library.
65 lines
3.1 KiB
C
65 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/assert.h"
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#include "libc/calls/blockcancel.internal.h"
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#include "libc/calls/struct/timespec.h"
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#include "libc/errno.h"
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#include "libc/limits.h"
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#include "libc/sysv/consts/clock.h"
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#include "libc/thread/posixthread.internal.h"
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#include "libc/thread/thread.h"
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#include "libc/time.h"
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/**
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* Sleeps for particular number of seconds.
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*
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* This function may be canceled except when using masked mode in which
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* case cancelation is temporarily disabled, because there is no way to
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* report the ECANCELED state.
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*
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* @return 0 if the full time elapsed, otherwise we assume an interrupt
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* was delivered, in which case the errno condition is ignored, and
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* this function shall return the number of unslept seconds rounded
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* using the ceiling function
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* @see clock_nanosleep()
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* @cancelationpoint
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* @asyncsignalsafe
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* @norestart
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*/
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unsigned sleep(unsigned seconds) {
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int cs = -1;
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errno_t err;
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unsigned unslept;
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struct timespec tv = {seconds};
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if (_pthread_self()->pt_flags & PT_MASKED) {
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cs = _pthread_block_cancelation();
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}
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err = clock_nanosleep(CLOCK_REALTIME, 0, &tv, &tv);
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if (cs != -1) {
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_pthread_allow_cancelation(cs);
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}
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if (!err)
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return 0;
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unassert(err == EINTR);
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unslept = tv.tv_sec;
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if (tv.tv_nsec && unslept < UINT_MAX) {
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++unslept;
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}
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return unslept;
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}
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