unbound/util/timeval_func.h
W.C.A. Wijngaards 144f29638c - Fix for #882: small changes, date updated in Copyright for
util/timeval_func.c and util/timeval_func.h. Man page entries and
  example entry.
2023-04-26 13:49:33 +02:00

54 lines
2.3 KiB
C

/*
* util/timeval_func.h - definitions of helpers for struct timeval values.
*
* Copyright (c) 2023, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NLNET LABS nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file
*
* This file contains definitions of helpers to manipulate struct timeval
* values, implemented in the corresponding C file.
*/
#include <sys/time.h>
#ifndef timeval_isset
#define timeval_isset(tv) ((tv)->tv_sec || (tv)->tv_usec)
#endif
#ifndef timeval_clear
#define timeval_clear(tv) ((tv)->tv_sec = (tv)->tv_usec = 0)
#endif
void timeval_subtract(struct timeval* d, const struct timeval* end, const struct timeval* start);
void timeval_add(struct timeval* d, const struct timeval* add);
void timeval_divide(struct timeval* avg, const struct timeval* sum, long long d);
int timeval_smaller(const struct timeval* x, const struct timeval* y);