Import BSDDB 4.7.25 (as of svn r89086)

2017-09-04 13:40:25 -05:00
parent 4b29e0458f
commit 8f590873d0
4781 changed files with 2241032 additions and 6 deletions
--- a/dbinc/clock.h
+++ b/dbinc/clock.h
@@ -0,0 +1,127 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 2005,2008 Oracle.  All rights reserved.
+ *
+ * $Id: clock.h 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+/*
+ * 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.
+ *
+ *	@(#)time.h	8.5 (Berkeley) 5/4/95
+ * FreeBSD: src/sys/sys/time.h,v 1.65 2004/04/07 04:19:49 imp Exp
+ */
+
+#ifndef _DB_CLOCK_H_
+#define	_DB_CLOCK_H_
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*
+ * This declaration is POSIX-compatible.  Because there are lots of different
+ * time.h include file patterns out there, it's easier to declare our own name
+ * in all cases than to try and discover if a system has a struct timespec.
+ * For the same reason, and because we'd have to #include <sys/time.h> in db.h,
+ * we don't export any timespec structures in the DB API, even in places where
+ * it would make sense, like the replication statistics information.
+ */
+typedef struct {
+	time_t	tv_sec;				/* seconds */
+	long	tv_nsec;			/* nanoseconds */
+} db_timespec;
+
+/* Operations on timespecs */
+#undef	timespecclear
+#define	timespecclear(tvp)	((tvp)->tv_sec = (tvp)->tv_nsec = 0)
+#undef	timespecisset
+#define	timespecisset(tvp)	((tvp)->tv_sec || (tvp)->tv_nsec)
+#undef	timespeccmp
+#define	timespeccmp(tvp, uvp, cmp)					\
+	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
+	    ((tvp)->tv_nsec cmp (uvp)->tv_nsec) :			\
+	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
+#undef timespecadd
+/*
+ * Note that using timespecadd to add to yourself (i.e. doubling)
+ * must be supported.  
+ */
+#define	timespecadd(vvp, uvp)						\
+	do {								\
+		(vvp)->tv_sec += (uvp)->tv_sec;				\
+		(vvp)->tv_nsec += (uvp)->tv_nsec;			\
+		if ((vvp)->tv_nsec >= 1000000000) {			\
+			(vvp)->tv_sec++;				\
+			(vvp)->tv_nsec -= 1000000000;			\
+		}							\
+	} while (0)
+#undef timespecsub
+#define	timespecsub(vvp, uvp)						\
+	do {								\
+		(vvp)->tv_sec -= (uvp)->tv_sec;				\
+		(vvp)->tv_nsec -= (uvp)->tv_nsec;			\
+		if ((vvp)->tv_nsec < 0) {				\
+			(vvp)->tv_sec--;				\
+			(vvp)->tv_nsec += 1000000000;			\
+		}							\
+	} while (0)
+
+#undef timespecset
+#define	timespecset(vvp, sec, nsec)					\
+	do {								\
+		(vvp)->tv_sec = (time_t)(sec);				\
+		(vvp)->tv_nsec = (long)(nsec);				\
+	} while (0)
+
+#define	DB_TIMEOUT_TO_TIMESPEC(t, vvp)					\
+	do {								\
+		(vvp)->tv_sec = (time_t)((t) / 1000000);		\
+		(vvp)->tv_nsec = (long)(((t) % 1000000) * 1000);	\
+	} while (0)
+
+#define	DB_TIMESPEC_TO_TIMEOUT(t, vvp, prec)				\
+	do {								\
+		t = (u_long)((vvp)->tv_sec * 1000000);			\
+		t += (u_long)((vvp)->tv_nsec / 1000);			\
+		/* Add in 1 usec for lost nsec precision if wanted. */	\
+		if (prec)						\
+			t++;						\
+	} while (0)
+
+#define TIMESPEC_ADD_DB_TIMEOUT(vvp, t) 			        \
+	do {							        \
+		db_timespec __tmp;				        \
+		DB_TIMEOUT_TO_TIMESPEC(t, &__tmp);		        \
+		timespecadd((vvp), &__tmp);			        \
+	} while (0)
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* !_DB_CLOCK_H_ */