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/db_dispatch.h
+++ b/dbinc/db_dispatch.h
@@ -0,0 +1,97 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996,2008 Oracle.  All rights reserved.
+ */
+/*
+ * Copyright (c) 1995, 1996
+ *	The President and Fellows of Harvard University.  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.
+ * 3. 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.
+ *
+ * $Id: db_dispatch.h 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#ifndef _DB_DISPATCH_H_
+#define	_DB_DISPATCH_H_
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*
+ * Declarations and typedefs for the list of transaction IDs used during
+ * recovery.  This is a generic list used to pass along whatever information
+ * we need during recovery.
+ */
+typedef enum {
+	TXNLIST_DELETE,
+	TXNLIST_LSN,
+	TXNLIST_TXNID
+} db_txnlist_type;
+
+#define	DB_TXNLIST_MASK(hp, n)  (n % hp->nslots)
+struct __db_txnhead {
+	void *td;		/* If abort, the detail for the txn. */
+	DB_THREAD_INFO *thread_info;	/* Thread information. */
+	u_int32_t maxid;	/* Maximum transaction id. */
+	DB_LSN maxlsn;		/* Maximum commit lsn. */
+	DB_LSN ckplsn;		/* LSN of last retained checkpoint. */
+	DB_LSN trunc_lsn;	/* Lsn to which we are going to truncate;
+				 * make sure we abort anyone after this. */
+	u_int32_t generation;	/* Current generation number. */
+	u_int32_t gen_alloc;	/* Number of generations allocated. */
+	struct {
+		u_int32_t generation;
+		u_int32_t txn_min;
+		u_int32_t txn_max;
+	} *gen_array;		/* Array of txnids associated with a gen. */
+	u_int nslots;
+	LIST_HEAD(__db_headlink, __db_txnlist) head[1];
+};
+
+#define	DB_LSN_STACK_SIZE 4
+struct __db_txnlist {
+	db_txnlist_type type;
+	LIST_ENTRY(__db_txnlist) links;
+	union {
+		struct {
+			u_int32_t txnid;
+			u_int32_t generation;
+			u_int32_t status;
+		} t;
+		struct {
+			u_int32_t stack_size;
+			u_int32_t stack_indx;
+			DB_LSN *lsn_stack;
+		} l;
+	} u;
+};
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* !_DB_DISPATCH_H_ */