added time functions
This commit is contained in:
192
stio/lib/stio-tim.c
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192
stio/lib/stio-tim.c
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/*
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* $Id$
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*
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Copyright (c) 2015-2016 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "stio-tim.h"
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#include "stio-prv.h"
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#if defined(_WIN32)
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# include <windows.h>
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# include <time.h>
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#elif defined(__OS2__)
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# define INCL_DOSDATETIME
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# define INCL_DOSERRORS
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# include <os2.h>
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# include <time.h>
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#elif defined(__DOS__)
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# include <dos.h>
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# include <time.h>
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#else
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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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# if defined(HAVE_TIME_H)
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# include <time.h>
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# endif
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# include <errno.h>
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#endif
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#if defined(_WIN32)
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#define EPOCH_DIFF_YEARS (STIO_EPOCH_YEAR-STIO_EPOCH_YEAR_WIN)
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#define EPOCH_DIFF_DAYS ((stio_intptr_t)EPOCH_DIFF_YEARS*365+EPOCH_DIFF_YEARS/4-3)
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#define EPOCH_DIFF_SECS ((stio_intptr_t)EPOCH_DIFF_DAYS*24*60*60)
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#endif
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int stio_gettime (stio_ntime_t* t)
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{
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#if defined(_WIN32)
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SYSTEMTIME st;
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FILETIME ft;
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ULARGE_INTEGER li;
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/*
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* MSDN: The FILETIME structure is a 64-bit value representing the
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* number of 100-nanosecond intervals since January 1, 1601 (UTC).
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*/
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GetSystemTime (&st);
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if (SystemTimeToFileTime (&st, &ft) == FALSE) return -1;
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li.LowPart = ft.dwLowDateTime;
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li.HighPart = ft.dwHighDateTime;
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/* li.QuadPart is in the 100-nanosecond intervals */
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t->sec = (li.QuadPart / (STIO_NSECS_PER_SEC / 100)) - EPOCH_DIFF_SECS;
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t->nsec = (li.QuadPart % (STIO_NSECS_PER_SEC / 100)) * 100;
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return 0;
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#elif defined(__OS2__)
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APIRET rc;
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DATETIME dt;
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stio_btime_t bt;
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/* Can I use DosQuerySysInfo(QSV_TIME_LOW) and
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* DosQuerySysInfo(QSV_TIME_HIGH) for this instead?
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* Maybe, resolution too low as it returns values
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* in seconds. */
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rc = DosGetDateTime (&dt);
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if (rc != NO_ERROR) return -1;
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bt.year = dt.year - STIO_BTIME_YEAR_BASE;
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bt.mon = dt.month - 1;
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bt.mday = dt.day;
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bt.hour = dt.hours;
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bt.min = dt.minutes;
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bt.sec = dt.seconds;
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/*bt.msec = dt.hundredths * 10;*/
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bt.isdst = -1; /* determine dst for me */
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if (stio_timelocal (&bt, t) <= -1) return -1;
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t->nsec = STIO_MSEC_TO_NSEC(dt.hundredths * 10);
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return 0;
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#elif defined(__DOS__)
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struct dostime_t dt;
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struct dosdate_t dd;
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stio_btime_t bt;
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_dos_gettime (&dt);
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_dos_getdate (&dd);
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bt.year = dd.year - STIO_BTIME_YEAR_BASE;
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bt.mon = dd.month - 1;
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bt.mday = dd.day;
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bt.hour = dt.hour;
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bt.min = dt.minute;
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bt.sec = dt.second;
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/*bt.msec = dt.hsecond * 10; */
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bt.isdst = -1; /* determine dst for me */
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if (stio_timelocal (&bt, t) <= -1) return -1;
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t->nsec = STIO_MSEC_TO_NSEC(dt.hsecond * 10);
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return 0;
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#elif defined(macintosh)
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unsigned long tv;
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GetDateTime (&tv);
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t->sec = tv;
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tv->nsec = 0;
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return 0;
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#elif defined(HAVE_GETTIMEOFDAY)
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struct timeval tv;
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int n;
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/* TODO: consider using clock_gettime() if it's avaialble.. -lrt may be needed */
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n = gettimeofday (&tv, STIO_NULL);
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if (n == -1)
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{
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/* TODO: set stio->errnum using errno... */
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return -1;
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}
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t->sec = tv.tv_sec;
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t->nsec = STIO_USEC_TO_NSEC(tv.tv_usec);
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return 0;
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#else
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t->sec = STIO_TIME (STIO_NULL);
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t->nsec = 0;
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return 0;
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#endif
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}
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void stio_addtime (const stio_ntime_t* x, const stio_ntime_t* y, stio_ntime_t* z)
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{
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STIO_ASSERT (x->nsec >= 0 && x->nsec < STIO_NSECS_PER_SEC);
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STIO_ASSERT (y->nsec >= 0 && y->nsec < STIO_NSECS_PER_SEC);
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z->sec = x->sec + y->sec;
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z->nsec = x->nsec + y->nsec;
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if (z->nsec >= STIO_NSECS_PER_SEC)
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{
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z->sec = z->sec + 1;
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z->nsec = z->nsec - STIO_NSECS_PER_SEC;
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}
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}
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void stio_subtime (const stio_ntime_t* x, const stio_ntime_t* y, stio_ntime_t* z)
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{
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STIO_ASSERT (x->nsec >= 0 && x->nsec < STIO_NSECS_PER_SEC);
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STIO_ASSERT (y->nsec >= 0 && y->nsec < STIO_NSECS_PER_SEC);
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z->sec = x->sec - y->sec;
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z->nsec = x->nsec - y->nsec;
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if (z->nsec < 0)
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{
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z->sec = z->sec - 1;
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z->nsec = z->nsec + STIO_NSECS_PER_SEC;
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}
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}
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135
stio/lib/stio-tim.h
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135
stio/lib/stio-tim.h
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@ -0,0 +1,135 @@
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/*
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* $Id$
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*
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Copyright (c) 2015-2016 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STIO_TIME_H_
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#define _STIO_TIME_H_
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#include <stio.h>
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#define STIO_EPOCH_YEAR (1970)
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#define STIO_EPOCH_MON (1)
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#define STIO_EPOCH_DAY (1)
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#define STIO_EPOCH_WDAY (4)
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/* windows specific epoch time */
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#define STIO_EPOCH_YEAR_WIN (1601)
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#define STIO_EPOCH_MON_WIN (1)
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#define STIO_EPOCH_DAY_WIN (1)
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#define STIO_DAYS_PER_WEEK (7)
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#define STIO_MONS_PER_YEAR (12)
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#define STIO_HOURS_PER_DAY (24)
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#define STIO_MINS_PER_HOUR (60)
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#define STIO_MINS_PER_DAY (STIO_MINS_PER_HOUR*STIO_HOURS_PER_DAY)
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#define STIO_SECS_PER_MIN (60)
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#define STIO_SECS_PER_HOUR (STIO_SECS_PER_MIN*STIO_MINS_PER_HOUR)
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#define STIO_SECS_PER_DAY (STIO_SECS_PER_MIN*STIO_MINS_PER_DAY)
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#define STIO_MSECS_PER_SEC (1000)
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#define STIO_MSECS_PER_MIN (STIO_MSECS_PER_SEC*STIO_SECS_PER_MIN)
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#define STIO_MSECS_PER_HOUR (STIO_MSECS_PER_SEC*STIO_SECS_PER_HOUR)
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#define STIO_MSECS_PER_DAY (STIO_MSECS_PER_SEC*STIO_SECS_PER_DAY)
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#define STIO_USECS_PER_MSEC (1000)
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#define STIO_NSECS_PER_USEC (1000)
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#define STIO_NSECS_PER_MSEC (STIO_NSECS_PER_USEC*STIO_USECS_PER_MSEC)
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#define STIO_USECS_PER_SEC (STIO_USECS_PER_MSEC*STIO_MSECS_PER_SEC)
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#define STIO_NSECS_PER_SEC (STIO_NSECS_PER_USEC*STIO_USECS_PER_MSEC*STIO_MSECS_PER_SEC)
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#define STIO_SECNSEC_TO_MSEC(sec,nsec) \
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(((stio_intptr_t)(sec) * STIO_MSECS_PER_SEC) + ((stio_intptr_t)(nsec) / STIO_NSECS_PER_MSEC))
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#define STIO_SECNSEC_TO_USEC(sec,nsec) \
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(((stio_intptr_t)(sec) * STIO_USECS_PER_SEC) + ((stio_intptr_t)(nsec) / STIO_NSECS_PER_USEC))
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#define STIO_SEC_TO_MSEC(sec) ((sec) * STIO_MSECS_PER_SEC)
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#define STIO_MSEC_TO_SEC(sec) ((sec) / STIO_MSECS_PER_SEC)
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#define STIO_USEC_TO_NSEC(usec) ((usec) * STIO_NSECS_PER_USEC)
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#define STIO_NSEC_TO_USEC(nsec) ((nsec) / STIO_NSECS_PER_USEC)
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#define STIO_MSEC_TO_NSEC(msec) ((msec) * STIO_NSECS_PER_MSEC)
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#define STIO_NSEC_TO_MSEC(nsec) ((nsec) / STIO_NSECS_PER_MSEC)
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#define STIO_SEC_TO_NSEC(sec) ((sec) * STIO_NSECS_PER_SEC)
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#define STIO_NSEC_TO_SEC(nsec) ((nsec) / STIO_NSECS_PER_SEC)
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#define STIO_SEC_TO_USEC(sec) ((sec) * STIO_USECS_PER_SEC)
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#define STIO_USEC_TO_SEC(usec) ((usec) / STIO_USECS_PER_SEC)
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/**
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* The stio_ntime_t type defines a numeric time type expressed in the
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* number of milliseconds since the Epoch (00:00:00 UTC, Jan 1, 1970).
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*/
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typedef struct stio_ntime_t stio_ntime_t;
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struct stio_ntime_t
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{
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stio_intptr_t sec;
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stio_int32_t nsec; /* nanoseconds */
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};
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#define stio_inittime(x,s,ns) (((x)->sec = (s)), ((x)->nsec = (ns)))
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#define stio_cleartime(x) stio_inittime(x,0,0)
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/*#define stio_cleartime(x) ((x)->sec = (x)->nsec = 0)*/
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#define stio_cmptime(x,y) \
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(((x)->sec == (y)->sec)? ((x)->nsec - (y)->nsec): \
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((x)->sec - (y)->sec))
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#define stio_iszerotime(x) ((x)->sec == 0 && (x)->nsec == 0)
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* The stio_gettime() function gets the current time.
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*/
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STIO_EXPORT int stio_gettime (
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stio_ntime_t* nt
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);
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/**
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* The stio_addtime() function adds x and y and stores the result in z
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*/
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STIO_EXPORT void stio_addtime (
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const stio_ntime_t* x,
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const stio_ntime_t* y,
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stio_ntime_t* z
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);
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/**
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* The stio_subtime() function subtract y from x and stores the result in z.
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*/
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STIO_EXPORT void stio_subtime (
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const stio_ntime_t* x,
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const stio_ntime_t* y,
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stio_ntime_t* z
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);
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#if defined(__cplusplus)
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}
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#endif
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#endif
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