mirror of
https://github.com/aaru-dps/libaaruformat.git
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55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/*
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* This file is part of the Aaru Data Preservation Suite.
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* Copyright (c) 2019-2025 Natalia Portillo.
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stddef.h>
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#include <stdint.h>
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#ifdef _WIN32
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#include <windows.h>
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uint64_t get_filetime_uint64()
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{
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FILETIME ft;
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SYSTEMTIME st;
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GetSystemTime(&st); // UTC time
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SystemTimeToFileTime(&st, &ft);
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return ((uint64_t)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
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}
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#else
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#include <sys/time.h>
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/**
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* @brief Gets the current time as a 64-bit FILETIME value.
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*
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* Returns the current system time as a 64-bit value compatible with Windows FILETIME (number of 100-nanosecond
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* intervals since January 1, 1601 UTC).
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*
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* @return The current time as a 64-bit FILETIME value.
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*/
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uint64_t get_filetime_uint64()
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{
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struct timeval tv;
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gettimeofday(&tv, NULL); // seconds + microseconds since 1970
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const uint64_t epoch_diff = 11644473600ULL; // seconds between 1601 and 1970
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uint64_t ft = (tv.tv_sec + epoch_diff) * 10000000ULL + tv.tv_usec * 10;
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return ft;
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}
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#endif
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