76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*
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* ZeroTier SDK - Network Virtualization Everywhere
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* Copyright (C) 2011-2017 ZeroTier, Inc. https://www.zerotier.com/
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* You can be released from the requirements of the license by purchasing
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* a commercial license. Buying such a license is mandatory as soon as you
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* develop commercial closed-source software that incorporates or links
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* directly against ZeroTier software without disclosing the source code
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* of your own application.
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*/
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/**
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* @file
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*
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* Platform-specific implementations of common functions
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*/
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#ifndef LIBZT_SYSUTILS_H
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#define LIBZT_SYSUTILS_H
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#include <sys/time.h>
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#include <stdint.h>
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/**
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* @brief Returns the thread-id. Used in debug traces.
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*
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* @usage For internal use only.
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* @return
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*/
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inline unsigned int gettid();
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/**
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* @brief Current time in milliseconds since epoch, platform-aware convenience function.
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*
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* @usage For internal use only.
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* @return Current time in integer form
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*/
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inline uint64_t time_now()
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{
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#ifdef __WINDOWS__
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FILETIME ft;
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SYSTEMTIME st;
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ULARGE_INTEGER tmp;
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GetSystemTime(&st);
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SystemTimeToFileTime(&st,&ft);
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tmp.LowPart = ft.dwLowDateTime;
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tmp.HighPart = ft.dwHighDateTime;
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return (uint64_t)( ((tmp.QuadPart - 116444736000000000LL) / 10000L) + st.wMilliseconds );
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#else
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struct timeval tv;
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#ifdef __LINUX__
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syscall(SYS_gettimeofday,&tv,0); /* fix for musl libc broken gettimeofday bug */
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#else
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gettimeofday(&tv,(struct timezone *)0);
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#endif
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return ( (1000LL * (uint64_t)tv.tv_sec) + (uint64_t)(tv.tv_usec / 1000) );
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#endif
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}
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#endif // _H
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