mirror of https://gerrit.osmocom.org/libosmocore
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*! \file timer_compat.h
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* Compatibility header with some helpers
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*/
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/*
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* (C) 2011 Sylvain Munaut <tnt@246tNt.com>
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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/*! \defgroup timer Osmocom timers
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* @{
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* \file timer_compat.h */
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#pragma once
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/* Convenience macros for operations on timevals.
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NOTE: `timercmp' does not work for >= or <=. */
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#ifndef timerisset
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# define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#endif
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#ifndef timerclear
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# define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
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#endif
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#ifndef timercmp
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# define timercmp(a, b, CMP) \
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(((a)->tv_sec == (b)->tv_sec) ? \
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((a)->tv_usec CMP (b)->tv_usec) : \
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((a)->tv_sec CMP (b)->tv_sec))
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#endif
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#ifndef timeradd
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# define timeradd(a, b, result) \
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do { \
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(result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
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(result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
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if ((result)->tv_usec >= 1000000) \
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{ \
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++(result)->tv_sec; \
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(result)->tv_usec -= 1000000; \
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} \
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} while (0)
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#endif
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#ifndef timersub
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# define timersub(a, b, result) \
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do { \
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(result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
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(result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
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if ((result)->tv_usec < 0) { \
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--(result)->tv_sec; \
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(result)->tv_usec += 1000000; \
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} \
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} while (0)
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#endif
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/*! @} */
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