1 files changed, 108 insertions, 0 deletions
diff --git a/storage/xtradb/include/lock0priv.h b/storage/xtradb/include/lock0priv.h
new file mode 100644
index 00000000000..287c151b19f
--- /dev/null
+++ b/storage/xtradb/include/lock0priv.h
@@ -0,0 +1,108 @@
+/*****************************************************************************
+
+Copyright (c) 2007, 2009, Innobase Oy. All Rights Reserved.
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; version 2 of the License.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+
+*****************************************************************************/
+
+/**************************************************//**
+@file include/lock0priv.h
+Lock module internal structures and methods.
+
+Created July 12, 2007 Vasil Dimov
+*******************************************************/
+
+#ifndef lock0priv_h
+#define lock0priv_h
+
+#ifndef LOCK_MODULE_IMPLEMENTATION
+/* If you need to access members of the structures defined in this
+file, please write appropriate functions that retrieve them and put
+those functions in lock/ */
+#error Do not include lock0priv.h outside of the lock/ module
+#endif
+
+#include "univ.i"
+#include "dict0types.h"
+#include "hash0hash.h"
+#include "trx0types.h"
+#include "ut0lst.h"
+
+/** A table lock */
+typedef struct lock_table_struct	lock_table_t;
+/** A table lock */
+struct lock_table_struct {
+	dict_table_t*	table;		/*!< database table in dictionary
+					cache */
+	UT_LIST_NODE_T(lock_t)
+			locks;		/*!< list of locks on the same
+					table */
+};
+
+/** Record lock for a page */
+typedef struct lock_rec_struct		lock_rec_t;
+/** Record lock for a page */
+struct lock_rec_struct {
+	ulint	space;			/*!< space id */
+	ulint	page_no;		/*!< page number */
+	ulint	n_bits;			/*!< number of bits in the lock
+					bitmap; NOTE: the lock bitmap is
+					placed immediately after the
+					lock struct */
+};
+
+/** Lock struct */
+struct lock_struct {
+	trx_t*		trx;		/*!< transaction owning the
+					lock */
+	UT_LIST_NODE_T(lock_t)
+			trx_locks;	/*!< list of the locks of the
+					transaction */
+	ulint		type_mode;	/*!< lock type, mode, LOCK_GAP or
+					LOCK_REC_NOT_GAP,
+					LOCK_INSERT_INTENTION,
+					wait flag, ORed */
+	hash_node_t	hash;		/*!< hash chain node for a record
+					lock */
+	dict_index_t*	index;		/*!< index for a record lock */
+	union {
+		lock_table_t	tab_lock;/*!< table lock */
+		lock_rec_t	rec_lock;/*!< record lock */
+	} un_member;			/*!< lock details */
+};
+
+/*********************************************************************//**
+Gets the type of a lock.
+@return	LOCK_TABLE or LOCK_REC */
+UNIV_INLINE
+ulint
+lock_get_type_low(
+/*==============*/
+	const lock_t*	lock);	/*!< in: lock */
+
+/*********************************************************************//**
+Gets the previous record lock set on a record.
+@return	previous lock on the same record, NULL if none exists */
+UNIV_INTERN
+const lock_t*
+lock_rec_get_prev(
+/*==============*/
+	const lock_t*	in_lock,/*!< in: record lock */
+	ulint		heap_no);/*!< in: heap number of the record */
+
+#ifndef UNIV_NONINL
+#include "lock0priv.ic"
+#endif
+
+#endif /* lock0priv_h */