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//===----------------------------------------------------------------------===//
//
// 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
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