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84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/* posixtime.h -- wrapper for time.h, sys/times.h mess. */
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/* Copyright (C) 1999-2021 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash 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 3 of the License, or
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(at your option) any later version.
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Bash 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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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _POSIXTIME_H_
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#define _POSIXTIME_H_
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/* include this after config.h */
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/* Some systems require this, mostly for the definition of `struct timezone'.
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For example, Dynix/ptx has that definition in <time.h> rather than
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sys/time.h */
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#if defined (HAVE_SYS_TIME_H)
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# include <sys/time.h>
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#endif
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#include <time.h>
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#if !defined (HAVE_SYSCONF) || !defined (_SC_CLK_TCK)
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# if !defined (CLK_TCK)
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# if defined (HZ)
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# define CLK_TCK HZ
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# else
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# define CLK_TCK 60 /* 60HZ */
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# endif
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# endif /* !CLK_TCK */
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#endif /* !HAVE_SYSCONF && !_SC_CLK_TCK */
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#if !HAVE_TIMEVAL
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struct timeval
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{
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time_t tv_sec;
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long int tv_usec;
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};
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#endif
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#if !HAVE_GETTIMEOFDAY
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extern int gettimeofday PARAMS((struct timeval *, void *));
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#endif
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/* These exist on BSD systems, at least. */
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#if !defined (timerclear)
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# define timerclear(tvp) do { (tvp)->tv_sec = 0; (tvp)->tv_usec = 0; } while (0)
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#endif
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#if !defined (timerisset)
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# define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#endif
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#if !defined (timercmp)
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# define timercmp(a, b, CMP) \
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(((a)->tv_sec == (b)->tv_sec) ? ((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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/* These are non-standard. */
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#if !defined (timerisunset)
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# define timerisunset(tvp) ((tvp)->tv_sec == 0 && (tvp)->tv_usec == 0)
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#endif
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#if !defined (timerset)
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# define timerset(tvp, s, u) do { tvp->tv_sec = s; tvp->tv_usec = u; } while (0)
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#endif
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#ifndef TIMEVAL_TO_TIMESPEC
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# define TIMEVAL_TO_TIMESPEC(tv, ts) \
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do { \
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(ts)->tv_sec = (tv)->tv_sec; \
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(ts)->tv_nsec = (tv)->tv_usec * 1000; \
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} while (0)
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#endif
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#endif /* _POSIXTIME_H_ */
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