74 lines
3.1 KiB
C
74 lines
3.1 KiB
C
/*
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* Copyright (c) 2015 The TCPDUMP project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef netdissect_timeval_operations_h
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#define netdissect_timeval_operations_h
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/* Operations on timevals. */
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#define ND_MICRO_PER_SEC 1000000
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#define ND_NANO_PER_SEC 1000000000
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#define netdissect_timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
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#define netdissect_timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#define netdissect_timevalcmp(tvp, uvp, cmp) \
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(((tvp)->tv_sec == (uvp)->tv_sec) ? \
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((tvp)->tv_usec cmp (uvp)->tv_usec) : \
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((tvp)->tv_sec cmp (uvp)->tv_sec))
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#define netdissect_timevaladd(tvp, uvp, vvp, nano_prec) \
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do { \
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(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
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(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
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if (nano_prec) { \
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if ((vvp)->tv_usec >= ND_NANO_PER_SEC) { \
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(vvp)->tv_sec++; \
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(vvp)->tv_usec -= ND_NANO_PER_SEC; \
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} \
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} else { \
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if ((vvp)->tv_usec >= ND_MICRO_PER_SEC) { \
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(vvp)->tv_sec++; \
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(vvp)->tv_usec -= ND_MICRO_PER_SEC; \
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} \
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} \
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} while (0)
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#define netdissect_timevalsub(tvp, uvp, vvp, nano_prec) \
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do { \
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(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
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(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
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if ((vvp)->tv_usec < 0) { \
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(vvp)->tv_sec--; \
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(vvp)->tv_usec += (nano_prec ? ND_NANO_PER_SEC : \
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ND_MICRO_PER_SEC); \
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} \
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} while (0)
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#endif /* netdissect_timeval_operations_h */
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