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/*
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* Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org>
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* Copyright (c) 2004 Darren Tucker <dtucker at zip com au>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/time.h>
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#ifdef HAVE_ADJTIMEX
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#include <sys/timex.h>
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#endif
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int
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clock_getres(clockid_t clk_id, struct timespec *tp)
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{
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# ifdef HAVE_ADJTIMEX
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struct timex tmx;
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# endif
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if (clk_id != CLOCK_REALTIME)
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return -1; /* not implemented */
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tp->tv_sec = 0;
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# ifdef HAVE_ADJTIMEX
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tmx.modes = 0;
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if (adjtimex(&tmx) == -1)
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return -1;
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else
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tp->tv_nsec = tmx.precision * 1000; /* usec -> nsec */
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# else
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/* assume default 10ms tick */
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tp->tv_nsec = 10000000;
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# endif
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return 0;
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}
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