forked from jbagg/QtZeroConf
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
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#ifndef footimevalhfoo
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#define footimevalhfoo
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/***
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This file is part of avahi.
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avahi is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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avahi is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with avahi; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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/** \file timeval.h Functions to facilitate timeval handling */
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#include <inttypes.h>
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#include <sys/time.h>
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#include <avahi-common/cdecl.h>
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AVAHI_C_DECL_BEGIN
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/** A numeric data type for storing microsecond values. (signed 64bit integer) */
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typedef int64_t AvahiUsec;
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/** Compare two timeval structures and return a negative value when a < b, 0 when a == b and a positive value otherwise */
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int avahi_timeval_compare(const struct timeval *a, const struct timeval *b);
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/** Calculate the difference between two timeval structures as microsecond value */
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AvahiUsec avahi_timeval_diff(const struct timeval *a, const struct timeval *b);
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/** Add a number of microseconds to the specified timeval structure and return it. *a is modified. */
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struct timeval* avahi_timeval_add(struct timeval *a, AvahiUsec usec);
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/** Return the difference between the current time and *a. Positive if *a was earlier */
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AvahiUsec avahi_age(const struct timeval *a);
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/** Fill *tv with the current time plus "ms" milliseconds plus an
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* extra jitter of "j" milliseconds. Pass 0 for j if you don't want
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* the jitter */
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struct timeval *avahi_elapse_time(struct timeval *tv, unsigned ms, unsigned j);
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AVAHI_C_DECL_END
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#endif
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