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author | Jonathan McCrohan <jmccrohan@gmail.com> | 2012-04-14 12:56:48 +0100 |
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committer | Jonathan McCrohan <jmccrohan@gmail.com> | 2012-04-14 12:56:48 +0100 |
commit | 0b624384cd52be20e61284551d832b499d7b7707 (patch) | |
tree | 6f95a4bbef47abc9720b96c0722e8f632aef228a /linux/avahi-common/timeval.h | |
download | libphidget21-0b624384cd52be20e61284551d832b499d7b7707.tar.gz |
Imported Upstream version 2.1.8.20120216upstream/2.1.8.20120216
Diffstat (limited to 'linux/avahi-common/timeval.h')
-rw-r--r-- | linux/avahi-common/timeval.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/linux/avahi-common/timeval.h b/linux/avahi-common/timeval.h new file mode 100644 index 0000000..718b49e --- /dev/null +++ b/linux/avahi-common/timeval.h @@ -0,0 +1,56 @@ +#ifndef footimevalhfoo +#define footimevalhfoo + +/* $Id: timeval.h 1244 2006-08-06 11:53:01Z lennart $ */ + +/*** + This file is part of avahi. + + avahi is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + avahi is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General + Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with avahi; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +/** \file timeval.h Functions to facilitate timeval handling */ + +#include <inttypes.h> +#include <sys/time.h> + +#include <avahi-common/cdecl.h> + +AVAHI_C_DECL_BEGIN + +/** A numeric data type for storing microsecond values. (signed 64bit integer) */ +typedef int64_t AvahiUsec; + +/** Compare two timeval structures and return a negative value when a < b, 0 when a == b and a positive value otherwise */ +int avahi_timeval_compare(const struct timeval *a, const struct timeval *b); + +/** Calculate the difference between two timeval structures as microsecond value */ +AvahiUsec avahi_timeval_diff(const struct timeval *a, const struct timeval *b); + +/** Add a number of microseconds to the specified timeval structure and return it. *a is modified. */ +struct timeval* avahi_timeval_add(struct timeval *a, AvahiUsec usec); + +/** Return the difference between the current time and *a. Positive if *a was earlier */ +AvahiUsec avahi_age(const struct timeval *a); + +/** Fill *tv with the current time plus "ms" milliseconds plus an + * extra jitter of "j" milliseconds. Pass 0 for j if you don't want + * the jitter */ +struct timeval *avahi_elapse_time(struct timeval *tv, unsigned ms, unsigned j); + +AVAHI_C_DECL_END + +#endif |