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66a99f619f
As c11 already provided timespec_get, to avoid symbol conflict, use c23_timespec_get as the function name and define timespec_get c23_timespec_get to achieve that Signed-off-by: Yonggang Luo <luoyonggang@gmail.com> Reviewed-by: Jesse Natalie <jenatali@microsoft.com> Acked-by: David Heidelberg <david.heidelberg@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23733>
138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/*
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* C11 <time.h> implementation
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*
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* (C) Copyright yohhoy 2012.
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* Copyright 2022 Yonggang Luo
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* Distributed under the Boost Software License, Version 1.0.
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*
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* Permission is hereby granted, free of charge, to any person or organization
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* obtaining a copy of the software and accompanying documentation covered by
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* this license (the "Software") to use, reproduce, display, distribute,
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* execute, and transmit the Software, and to prepare [[derivative work]]s of the
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* Software, and to permit third-parties to whom the Software is furnished to
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* do so, all subject to the following:
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*
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* The copyright notices in the Software and this entire statement, including
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* the above license grant, this restriction and the following disclaimer,
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* must be included in all copies of the Software, in whole or in part, and
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* all derivative works of the Software, unless such copies or derivative
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* works are solely in the form of machine-executable object code generated by
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* a source language processor.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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* FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "c11/time.h"
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#ifdef _TIMESPEC_GET_NEED_IMPL
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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#include "c11/threads.h"
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#include <windows.h>
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static LARGE_INTEGER frequency;
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static
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void
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c23_timespec_get_init(void)
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{
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QueryPerformanceFrequency(&frequency);
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}
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int
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c23_timespec_get(struct timespec *ts, int base)
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{
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/* difference between 1970 and 1601 */
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#define _TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS 116444736000000000ull
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/* 1 tick is 100 nanoseconds */
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#define _TIMESPEC_IMPL_TICKS_PER_SECONDS 10000000ull
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if (!ts)
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return 0;
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if (base == TIME_UTC) {
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FILETIME ft;
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ULARGE_INTEGER date;
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LONGLONG ticks;
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GetSystemTimeAsFileTime(&ft);
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date.HighPart = ft.dwHighDateTime;
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date.LowPart = ft.dwLowDateTime;
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ticks = (LONGLONG)(date.QuadPart - _TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS);
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ts->tv_sec = ticks / _TIMESPEC_IMPL_TICKS_PER_SECONDS;
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ts->tv_nsec = (ticks % _TIMESPEC_IMPL_TICKS_PER_SECONDS) * 100;
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return base;
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} else if (base == TIME_MONOTONIC || base == TIME_MONOTONIC_RAW) {
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if (frequency.QuadPart == 0) {
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static once_flag once = ONCE_FLAG_INIT;
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call_once(&once, c23_timespec_get_init);
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}
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if (frequency.QuadPart != 0) {
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LARGE_INTEGER now;
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LONGLONG sec;
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LONGLONG nsec;
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QueryPerformanceCounter(&now);
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sec = now.QuadPart / frequency.QuadPart;
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nsec = (now.QuadPart - sec * frequency.QuadPart)
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* 1000000000UL / frequency.QuadPart;
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ts->tv_sec = (time_t)sec;
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ts->tv_nsec = (long)nsec;
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return base;
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}
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/* Otherwise timespec_get with TIME_MONOTONIC or TIME_MONOTONIC_RAW failed */
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return 0;
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}
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return 0;
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#undef _TIMESPEC_IMPL_UNIX_EPOCH_IN_TICKS
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#undef _TIMESPEC_IMPL_TICKS_PER_SECONDS
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}
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#else
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int c23_timespec_get(struct timespec *ts, int base)
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{
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if (!ts)
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return 0;
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switch (base)
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{
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case TIME_UTC:
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if (clock_gettime(CLOCK_REALTIME, ts) == 0)
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return base;
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break;
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#ifdef CLOCK_MONOTONIC
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case TIME_MONOTONIC:
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if (clock_gettime(CLOCK_MONOTONIC, ts) == 0)
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return base;
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break;
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#endif
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#ifdef CLOCK_PROCESS_CPUTIME_ID
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case TIME_ACTIVE:
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if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, ts) == 0)
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return base;
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break;
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#endif
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#ifdef CLOCK_THREAD_CPUTIME_ID
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case TIME_THREAD_ACTIVE:
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if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, ts) == 0)
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return base;
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break;
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#endif
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#ifdef CLOCK_MONOTONIC_RAW
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case TIME_MONOTONIC_RAW:
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if (clock_gettime(CLOCK_MONOTONIC_RAW, ts) == 0)
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return base;
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break;
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#endif
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default:
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break;
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}
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return 0;
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}
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#endif
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#endif /* !HAVE_TIMESPEC_GET */
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