epoc32/include/stdapis/sys/time.h
branchSymbian2
changeset 2 2fe1408b6811
parent 0 061f57f2323e
child 4 837f303aceeb
--- a/epoc32/include/stdapis/sys/time.h	Tue Nov 24 13:55:44 2009 +0000
+++ b/epoc32/include/stdapis/sys/time.h	Tue Mar 16 16:12:26 2010 +0000
@@ -1,1 +1,178 @@
-time.h
+/*-
+ * Copyright (c) 1982, 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved.
+ *	@(#)time.h	8.5 (Berkeley) 5/4/95
+ * $FreeBSD: src/sys/sys/time.h,v 1.69 2005/04/02 12:33:27 das Exp $
+ */
+
+#ifndef _SYS_TIME_H_
+#define _SYS_TIME_H_
+
+#include <sys/_timeval.h>
+#include <sys/types.h>
+#include <sys/timespec.h>
+
+struct timezone {
+	int	tz_minuteswest;	/* minutes west of Greenwich */
+	int	tz_dsttime;	/* type of dst correction */
+};
+#define	DST_NONE	0	/* not on dst */
+#define	DST_USA		1	/* USA style dst */
+#define	DST_AUST	2	/* Australian style dst */
+#define	DST_WET		3	/* Western European dst */
+#define	DST_MET		4	/* Middle European dst */
+#define	DST_EET		5	/* Eastern European dst */
+#define	DST_CAN		6	/* Canada */
+
+#if __BSD_VISIBLE
+struct bintime {
+	time_t	sec;
+	uint64_t frac;
+};
+
+static __inline void
+bintime_addx(struct bintime *bt, uint64_t x)
+{
+	uint64_t u;
+
+	u = bt->frac;
+	bt->frac += x;
+	if (u > bt->frac)
+		bt->sec++;
+}
+
+static __inline void
+bintime_add(struct bintime *bt, const struct bintime *bt2)
+{
+	uint64_t u;
+
+	u = bt->frac;
+	bt->frac += bt2->frac;
+	if (u > bt->frac)
+		bt->sec++;
+	bt->sec += bt2->sec;
+}
+
+static __inline void
+bintime_sub(struct bintime *bt, const struct bintime *bt2)
+{
+	uint64_t u;
+
+	u = bt->frac;
+	bt->frac -= bt2->frac;
+	if (u < bt->frac)
+		bt->sec--;
+	bt->sec -= bt2->sec;
+}
+
+/*-
+ * Background information:
+ *
+ * When converting between timestamps on parallel timescales of differing
+ * resolutions it is historical and scientific practice to round down rather
+ * than doing 4/5 rounding.
+ *
+ *   The date changes at midnight, not at noon.
+ *
+ *   Even at 15:59:59.999999999 it's not four'o'clock.
+ *
+ *   time_second ticks after N.999999999 not after N.4999999999
+ */
+
+static __inline void
+bintime2timespec(const struct bintime *bt, struct timespec *ts)
+{
+
+	ts->tv_sec = bt->sec;
+	ts->tv_nsec = ((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32;
+}
+
+static __inline void
+timespec2bintime(const struct timespec *ts, struct bintime *bt)
+{
+
+	bt->sec = ts->tv_sec;
+	/* 18446744073 = int(2^64 / 1000000000) */
+	bt->frac = ts->tv_nsec * (uint64_t)18446744073LL; 
+}
+
+static __inline void
+bintime2timeval(const struct bintime *bt, struct timeval *tv)
+{
+
+	tv->tv_sec = bt->sec;
+	tv->tv_usec = ((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32;
+}
+
+static __inline void
+timeval2bintime(const struct timeval *tv, struct bintime *bt)
+{
+
+	bt->sec = tv->tv_sec;
+	/* 18446744073709 = int(2^64 / 1000000) */
+	bt->frac = tv->tv_usec * (uint64_t)18446744073709LL;
+}
+#endif /* __BSD_VISIBLE */
+
+/*
+ * Names of the interval timers, and structure
+ * defining a timer setting.
+ */
+#define	ITIMER_REAL	0
+#define	ITIMER_VIRTUAL	1
+#define	ITIMER_PROF	2
+
+struct itimerval {
+	struct	timeval it_interval;	/* timer interval */
+	struct	timeval it_value;	/* current value */
+};
+
+/*
+ * Getkerninfo clock information structure
+ */
+struct clockinfo {
+	int	hz;		/* clock frequency */
+	int	tick;		/* micro-seconds per hz tick */
+	int	spare;
+	int	stathz;		/* statistics clock frequency */
+	int	profhz;		/* profiling clock frequency */
+};
+
+#include <time.h>
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+IMPORT_C int	adjtime(const struct timeval *, struct timeval *);
+IMPORT_C int	gettimeofday(struct timeval *, struct timezone *);
+int	settimeofday(const struct timeval *, const struct timezone *);
+IMPORT_C int	utimes(const char *, const struct timeval *);
+__END_DECLS
+
+
+#endif /* !_SYS_TIME_H_ */