97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
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/* @(#)getnstimeofday.c 1.2 13/09/30 Copyright 2007-2013 J. Schilling */
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#include <schily/mconfig.h>
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#ifndef lint
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static UConst char sccsid[] =
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"@(#)getnstimeofday.c 1.2 13/09/30 Copyright 2007-2013 J. Schilling";
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#endif
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/*
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* getnstimeofday() a nanosecond enabled version of gettimeofday()
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*
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* Copyright (c) 2007-2013 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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* A copy of the CDDL is also available via the Internet at
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* http://www.opensource.org/licenses/cddl1.txt
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#if (defined(_MSC_VER) || defined(__MINGW32__))
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#include <schily/windows.h>
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#include <schily/time.h>
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#include <schily/utypes.h>
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#include <schily/standard.h>
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#ifdef _MSC_VER
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const __int64 MS_FTIME_ADD = 0x2b6109100i64;
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const __int64 MS_FTIME_SECS = 10000000i64;
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#else
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const Int64_t MS_FTIME_ADD = 0x2b6109100LL;
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const Int64_t MS_FTIME_SECS = 10000000LL;
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#endif
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EXPORT int
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getnstimeofday(tp)
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struct timespec *tp;
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{
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FILETIME ft;
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Int64_t T;
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if (tp == 0)
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return (0);
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GetSystemTimeAsFileTime(&ft); /* 100ns time since 1601 */
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T = ft.dwHighDateTime;
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T <<= 32;
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T += ft.dwLowDateTime;
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/*
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* Cast to avoid a loss of data warning
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* MSVC uses long instead of time_t for tv_sec
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*/
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tp->tv_sec = (long) (T / MS_FTIME_SECS - MS_FTIME_ADD);
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tp->tv_nsec = (long) (T % MS_FTIME_SECS) * 100;
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return (0);
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}
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#else /* (defined(_MSC_VER) || defined(__MINGW32__)) */
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#include <schily/time.h>
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#include <schily/standard.h>
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#include <schily/schily.h>
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EXPORT int
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getnstimeofday(tp)
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struct timespec *tp;
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{
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struct timeval tv;
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int ret;
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#if defined(HAVE_CLOCK_GETTIME) && defined(HAVE_CLOCK_GETTIME_IN_LIBC)
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#ifdef __CLOCK_REALTIME0
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/*
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* Use fasttrap on Solaris
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*/
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if (clock_gettime(__CLOCK_REALTIME0, tp) == 0)
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return (0);
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#else
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if (clock_gettime(CLOCK_REALTIME, tp) == 0)
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return (0);
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#endif
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#endif
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ret = gettimeofday(&tv, (void *)0);
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tp->tv_sec = tv.tv_sec;
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tp->tv_nsec = tv.tv_usec * 1000;
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return (ret);
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}
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#endif /* (defined(_MSC_VER) || defined(__MINGW32__)) */
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