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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.
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
//===------------------------- chrono.cpp ---------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "third_party/libcxx/chrono"
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#include "third_party/libcxx/cerrno" // errn"
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#include "libc/sysv/consts/clock.h"
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#include "libc/time.h"
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#include "libc/sysv/consts/clock.h"
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#include "third_party/libcxx/system_error" // __throw_system_erro"
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#define _LIBCPP_USE_CLOCK_GETTIME
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace chrono
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{
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// system_clock
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const bool system_clock::is_steady;
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system_clock::time_point
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system_clock::now() _NOEXCEPT
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{
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struct timespec tp;
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if (0 != clock_gettime(CLOCK_REALTIME, &tp))
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__throw_system_error(errno, "clock_gettime(CLOCK_REALTIME) failed");
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return time_point(seconds(tp.tv_sec) + microseconds(tp.tv_nsec / 1000));
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}
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time_t
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system_clock::to_time_t(const time_point& t) _NOEXCEPT
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{
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return time_t(duration_cast<seconds>(t.time_since_epoch()).count());
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}
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system_clock::time_point
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system_clock::from_time_t(time_t t) _NOEXCEPT
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{
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return system_clock::time_point(seconds(t));
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}
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// steady_clock
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//
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// Warning: If this is not truly steady, then it is non-conforming. It is
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// better for it to not exist and have the rest of libc++ use system_clock
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// instead.
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const bool steady_clock::is_steady;
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steady_clock::time_point
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steady_clock::now() _NOEXCEPT
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{
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struct timespec tp;
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if (0 != clock_gettime(CLOCK_MONOTONIC, &tp))
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__throw_system_error(errno, "clock_gettime(CLOCK_MONOTONIC) failed");
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return time_point(seconds(tp.tv_sec) + nanoseconds(tp.tv_nsec));
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}
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} // namespace chrono
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_LIBCPP_END_NAMESPACE_STD
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