dc5e1d05bf
There was no flag added for llvm-libc when picolibc and newlib were
provided in https://github.com/llvm/llvm-project/pull/147956 - the
missing flag breaks libc++ iostream support now because this check
9a8421fa61/libcxx/include/__config (L719)
fails unless an LLVM libc header is included.
80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
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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 <__config>
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#include <__system_error/throw_system_error.h>
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#include <cerrno>
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#include <chrono>
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#include <filesystem>
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#include <ratio>
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#include <time.h>
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#if defined(_LIBCPP_WIN32API)
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# include "time_utils.h"
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#endif
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#if defined(_LIBCPP_WIN32API)
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# define WIN32_LEAN_AND_MEAN
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# define NOMINMAX
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# include <windows.h>
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#endif
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#if __has_include(<unistd.h>)
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# include <unistd.h> // _POSIX_TIMERS
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#endif
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#if __has_include(<sys/time.h>)
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# include <sys/time.h> // for gettimeofday and timeval
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#endif
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#if _LIBCPP_LIBC_LLVM_LIBC
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# define _LIBCPP_HAS_TIMESPEC_GET
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#endif
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#if defined(__APPLE__) || defined(__gnu_hurd__) || defined(__AMDGPU__) || defined(__NVPTX__) || \
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(defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0)
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# define _LIBCPP_HAS_CLOCK_GETTIME
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#endif
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_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
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_LIBCPP_DIAGNOSTIC_PUSH
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated")
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const bool _FilesystemClock::is_steady;
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_LIBCPP_DIAGNOSTIC_POP
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_FilesystemClock::time_point _FilesystemClock::now() noexcept {
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typedef chrono::duration<rep> __secs;
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#if defined(_LIBCPP_WIN32API)
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typedef chrono::duration<rep, nano> __nsecs;
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FILETIME time;
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GetSystemTimeAsFileTime(&time);
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detail::TimeSpec tp = detail::filetime_to_timespec(time);
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return time_point(__secs(tp.tv_sec) + chrono::duration_cast<duration>(__nsecs(tp.tv_nsec)));
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#elif defined(_LIBCPP_HAS_TIMESPEC_GET)
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typedef chrono::duration<rep, nano> __nsecs;
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struct timespec ts;
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if (timespec_get(&ts, TIME_UTC) != TIME_UTC)
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std::__throw_system_error(errno, "timespec_get(TIME_UTC) failed");
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return time_point(__secs(ts.tv_sec) + chrono::duration_cast<duration>(__nsecs(ts.tv_nsec)));
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#elif defined(_LIBCPP_HAS_CLOCK_GETTIME)
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typedef chrono::duration<rep, nano> __nsecs;
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struct timespec tp;
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if (0 != clock_gettime(CLOCK_REALTIME, &tp))
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std::__throw_system_error(errno, "clock_gettime(CLOCK_REALTIME) failed");
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return time_point(__secs(tp.tv_sec) + chrono::duration_cast<duration>(__nsecs(tp.tv_nsec)));
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#else
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typedef chrono::duration<rep, micro> __microsecs;
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timeval tv;
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gettimeofday(&tv, 0);
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return time_point(__secs(tv.tv_sec) + __microsecs(tv.tv_usec));
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#endif
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}
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_LIBCPP_END_NAMESPACE_FILESYSTEM
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