mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include <__config>
|
|
#include <chrono>
|
|
#include <filesystem>
|
|
#include <time.h>
|
|
|
|
#if defined(_LIBCPP_WIN32API)
|
|
# include "time_utils.h"
|
|
#endif
|
|
|
|
#if defined(_LIBCPP_WIN32API)
|
|
# define WIN32_LEAN_AND_MEAN
|
|
# define NOMINMAX
|
|
# include <windows.h>
|
|
#endif
|
|
|
|
#if __has_include(<unistd.h>)
|
|
# include <unistd.h> // _POSIX_TIMERS
|
|
#endif
|
|
|
|
#if __has_include(<sys/time.h>)
|
|
# include <sys/time.h> // for gettimeofday and timeval
|
|
#endif
|
|
|
|
#if defined(__APPLE__) || defined(__gnu_hurd__) || (defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0)
|
|
# define _LIBCPP_HAS_CLOCK_GETTIME
|
|
#endif
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
|
|
|
|
const bool _FilesystemClock::is_steady;
|
|
|
|
_FilesystemClock::time_point _FilesystemClock::now() noexcept {
|
|
typedef chrono::duration<rep> __secs;
|
|
#if defined(_LIBCPP_WIN32API)
|
|
typedef chrono::duration<rep, nano> __nsecs;
|
|
FILETIME time;
|
|
GetSystemTimeAsFileTime(&time);
|
|
detail::TimeSpec tp = detail::filetime_to_timespec(time);
|
|
return time_point(__secs(tp.tv_sec) + chrono::duration_cast<duration>(__nsecs(tp.tv_nsec)));
|
|
#elif defined(_LIBCPP_HAS_CLOCK_GETTIME)
|
|
typedef chrono::duration<rep, nano> __nsecs;
|
|
struct timespec tp;
|
|
if (0 != clock_gettime(CLOCK_REALTIME, &tp))
|
|
__throw_system_error(errno, "clock_gettime(CLOCK_REALTIME) failed");
|
|
return time_point(__secs(tp.tv_sec) + chrono::duration_cast<duration>(__nsecs(tp.tv_nsec)));
|
|
#else
|
|
typedef chrono::duration<rep, micro> __microsecs;
|
|
timeval tv;
|
|
gettimeofday(&tv, 0);
|
|
return time_point(__secs(tv.tv_sec) + __microsecs(tv.tv_usec));
|
|
#endif
|
|
}
|
|
|
|
_LIBCPP_END_NAMESPACE_FILESYSTEM
|