branches/zip: Add some const qualifiers, mainly to upd_t*.

upd_get_n_fields(), upd_get_nth_field(): Add const qualifiers.

btr/btr0cur.c

@@ -106,7 +106,7 @@ btr_rec_free_updated_extern_fields(
 	page_zip_des_t*	page_zip,/* in: compressed page whose uncompressed
 				part will be updated, or NULL */
 	const ulint*	offsets,/* in: rec_get_offsets(rec, index) */
-	upd_t*		update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	mtr_t*		mtr);	/* in: mini-transaction handle which contains
 				an X-latch to record page and to the tree */
 /***************************************************************
@@ -1468,7 +1468,7 @@ btr_cur_upd_lock_and_undo(
 				number */
 	ulint		flags,	/* in: undo logging and locking flags */
 	btr_cur_t*	cursor,	/* in: cursor on record to update */
-	upd_t*		update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	ulint		cmpl_info,/* in: compiler info on secondary index
 				updates */
 	que_thr_t*	thr,	/* in: query thread */
@@ -1531,7 +1531,7 @@ btr_cur_update_in_place_log(
 	ulint		flags,		/* in: flags */
 	rec_t*		rec,		/* in: record */
 	dict_index_t*	index,		/* in: index where cursor positioned */
-	upd_t*		update,		/* in: update vector */
+	const upd_t*	update,		/* in: update vector */
 	trx_t*		trx,		/* in: transaction */
 	dulint		roll_ptr,	/* in: roll ptr */
 	mtr_t*		mtr)		/* in: mtr */
@@ -1717,7 +1717,7 @@ btr_cur_update_in_place(
 	btr_cur_t*	cursor,	/* in: cursor on the record to update;
 				cursor stays valid and positioned on the
 				same record */
-	upd_t*		update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	ulint		cmpl_info,/* in: compiler info on secondary index
 				updates */
 	que_thr_t*	thr,	/* in: query thread */
@@ -1844,7 +1844,7 @@ btr_cur_optimistic_update(
 	btr_cur_t*	cursor,	/* in: cursor on the record to update;
 				cursor stays valid and positioned on the
 				same record */
-	upd_t*		update,	/* in: update vector; this must also
+	const upd_t*	update,	/* in: update vector; this must also
 				contain trx id and roll ptr fields */
 	ulint		cmpl_info,/* in: compiler info on secondary index
 				updates */
@@ -3513,7 +3513,7 @@ btr_cur_mark_dtuple_inherited_extern(
 	const ulint*	ext_vec,	/* in: array of extern fields in the
 					original record */
 	ulint		n_ext_vec,	/* in: number of elements in ext_vec */
-	upd_t*		update)		/* in: update vector */
+	const upd_t*	update)		/* in: update vector */
 {
 	dfield_t*	dfield;
 	ulint		byte_val;
@@ -3636,7 +3636,7 @@ btr_push_update_extern_fields(
 				to have twice the space for all fields
 				in rec */
 	const ulint*	offsets,/* in: array returned by rec_get_offsets() */
-	upd_t*		update)	/* in: update vector or NULL */
+	const upd_t*	update)	/* in: update vector or NULL */
 {
 	ulint	n_pushed	= 0;
 	ulint	n;
@@ -4340,11 +4340,10 @@ btr_rec_free_updated_extern_fields(
 	page_zip_des_t*	page_zip,/* in: compressed page whose uncompressed
 				part will be updated, or NULL */
 	const ulint*	offsets,/* in: rec_get_offsets(rec, index) */
-	upd_t*		update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	mtr_t*		mtr)	/* in: mini-transaction handle which contains
 				an X-latch to record page and to the tree */
 {
-	upd_field_t*	ufield;
 	ulint	n_fields;
 	ulint	i;
 
@@ -4356,7 +4355,7 @@ btr_rec_free_updated_extern_fields(
 	n_fields = upd_get_n_fields(update);
 
 	for (i = 0; i < n_fields; i++) {
-		ufield = upd_get_nth_field(update, i);
+		const upd_field_t* ufield = upd_get_nth_field(update, i);
 
 		if (rec_offs_nth_extern(offsets, ufield->field_no)) {
 			ulint	len;

include/btr0cur.h

@@ -224,7 +224,7 @@ btr_cur_update_in_place(
 	btr_cur_t*	cursor,	/* in: cursor on the record to update;
 				cursor stays valid and positioned on the
 				same record */
-	upd_t*		update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	ulint		cmpl_info,/* in: compiler info on secondary index
 				updates */
 	que_thr_t*	thr,	/* in: query thread */
@@ -248,7 +248,7 @@ btr_cur_optimistic_update(
 	btr_cur_t*	cursor,	/* in: cursor on the record to update;
 				cursor stays valid and positioned on the
 				same record */
-	upd_t*		update,	/* in: update vector; this must also
+	const upd_t*	update,	/* in: update vector; this must also
 				contain trx id and roll ptr fields */
 	ulint		cmpl_info,/* in: compiler info on secondary index
 				updates */
@@ -461,7 +461,7 @@ btr_cur_mark_dtuple_inherited_extern(
 	const ulint*	ext_vec,	/* in: array of extern fields in the
 					original record */
 	ulint		n_ext_vec,	/* in: number of elements in ext_vec */
-	upd_t*		update);	/* in: update vector */
+	const upd_t*	update);	/* in: update vector */
 /***********************************************************************
 Marks all extern fields in a dtuple as owned by the record. */
 
@@ -573,8 +573,7 @@ btr_push_update_extern_fields(
 				to have twice the space for all fields
 				in rec */
 	const ulint*	offsets,/* in: array returned by rec_get_offsets() */
-	upd_t*		update);/* in: update vector or NULL */
-
+	const upd_t*	update);/* in: update vector or NULL */
 
 /*######################################################################*/
 

include/row0upd.h

@@ -36,7 +36,8 @@ ulint
 upd_get_n_fields(
 /*=============*/
 					/* out: number of fields */
-	upd_t*	update);	/* in: update vector */
+	const upd_t*	update);	/* in: update vector */
+#ifdef UNIV_DEBUG
 /*************************************************************************
 Returns the nth field of an update vector. */
 UNIV_INLINE
@@ -44,8 +45,11 @@ upd_field_t*
 upd_get_nth_field(
 /*==============*/
 				/* out: update vector field */
-	upd_t*	update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	ulint		n);	/* in: field position in update vector */
+#else
+# define upd_get_nth_field(update, n) ((update)->fields + (n))
+#endif
 /*************************************************************************
 Sets an index field number to be updated by an update vector field. */
 UNIV_INLINE
@@ -112,10 +116,11 @@ Writes to the redo log the new values of the fields occurring in the index. */
 void
 row_upd_index_write_log(
 /*====================*/
-	upd_t*	update,	/* in: update vector */
-	byte*	log_ptr,/* in: pointer to mlog buffer: must contain at least
-			MLOG_BUF_MARGIN bytes of free space; the buffer is
-			closed within this function */
+	const upd_t*	update,	/* in: update vector */
+	byte*		log_ptr,/* in: pointer to mlog buffer: must
+				contain at least MLOG_BUF_MARGIN bytes
+				of free space; the buffer is closed
+				within this function */
 	mtr_t*		mtr);	/* in: mtr into whose log to write */
 /***************************************************************
 Returns TRUE if row update changes size of some field in index or if some
@@ -129,7 +134,7 @@ row_upd_changes_field_size_or_external(
 				in rec or update */
 	dict_index_t*	index,	/* in: index */
 	const ulint*	offsets,/* in: rec_get_offsets(rec, index) */
-	upd_t*		update);/* in: update vector */
+	const upd_t*	update);/* in: update vector */
 /***************************************************************
 Replaces the new column values stored in the update vector to the record
 given. No field size changes are allowed. */
@@ -140,7 +145,7 @@ row_upd_rec_in_place(
 	rec_t*		rec,	/* in/out: record where replaced */
 	dict_index_t*	index,	/* in: the index the record belongs to */
 	const ulint*	offsets,/* in: array returned by rec_get_offsets() */
-	upd_t*		update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	page_zip_des_t*	page_zip);/* in: compressed page with enough space
 				available, or NULL */
 /*******************************************************************
@@ -173,7 +178,7 @@ row_upd_build_difference_binary(
 	const ulint*	ext_vec,/* in: array containing field numbers of
 				externally stored fields in entry, or NULL */
 	ulint		n_ext_vec,/* in: number of fields in ext_vec */
-	rec_t*		rec,	/* in: clustered index record */
+	const rec_t*	rec,	/* in: clustered index record */
 	trx_t*		trx,	/* in: transaction */
 	mem_heap_t*	heap);	/* in: memory heap from which allocated */
 /***************************************************************
@@ -186,7 +191,7 @@ row_upd_index_replace_new_col_vals_index_pos(
 	dtuple_t*	entry,	/* in/out: index entry where replaced */
 	dict_index_t*	index,	/* in: index; NOTE that this may also be a
 				non-clustered index */
-	upd_t*		update,	/* in: an update vector built for the index so
+	const upd_t*	update,	/* in: an update vector built for the index so
 				that the field number in an upd_field is the
 				index position */
 	ibool		order_only,
@@ -225,12 +230,12 @@ row_upd_changes_ord_field_binary(
 				an ordering field in the index record;
 				NOTE: the fields are compared as binary
 				strings */
-	dtuple_t*	row,	/* in: old value of row, or NULL if the
+	const dtuple_t*	row,	/* in: old value of row, or NULL if the
 				row and the data values in update are not
 				known when this function is called, e.g., at
 				compile time */
 	dict_index_t*	index,	/* in: index of the record */
-	upd_t*		update);/* in: update vector for the row; NOTE: the
+	const upd_t*	update);/* in: update vector for the row; NOTE: the
 				field numbers in this MUST be clustered index
 				positions! */
 /***************************************************************

include/row0upd.ic

@@ -47,13 +47,14 @@ ulint
 upd_get_n_fields(
 /*=============*/
 				/* out: number of fields */
-	upd_t*	update)	/* in: update vector */
+	const upd_t*	update)	/* in: update vector */
 {
 	ut_ad(update);
 
 	return(update->n_fields);
 }
 
+#ifdef UNIV_DEBUG
 /*************************************************************************
 Returns the nth field of an update vector. */
 UNIV_INLINE
@@ -61,14 +62,15 @@ upd_field_t*
 upd_get_nth_field(
 /*==============*/
 				/* out: update vector field */
-	upd_t*	update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	ulint		n)	/* in: field position in update vector */
 {
 	ut_ad(update);
 	ut_ad(n < update->n_fields);
 
-	return(update->fields + n);
+	return((upd_field_t*) update->fields + n);
 }
+#endif /* UNIV_DEBUG */
 
 /*************************************************************************
 Sets an index field number to be updated by an update vector field. */

include/trx0rec.h

@@ -201,7 +201,7 @@ trx_undo_report_row_operation(
 	const dtuple_t*	clust_entry,	/* in: in the case of an insert,
 					index entry to insert into the
 					clustered index, otherwise NULL */
-	upd_t*		update,		/* in: in the case of an update,
+	const upd_t*	update,		/* in: in the case of an update,
 					the update vector, otherwise NULL */
 	ulint		cmpl_info,	/* in: compiler info on secondary
 					index updates */

row/row0upd.c

@@ -376,10 +376,10 @@ row_upd_changes_field_size_or_external(
 				in rec or update */
 	dict_index_t*	index,	/* in: index */
 	const ulint*	offsets,/* in: rec_get_offsets(rec, index) */
-	upd_t*		update)	/* in: update vector */
+	const upd_t*	update)	/* in: update vector */
 {
-	upd_field_t*	upd_field;
-	dfield_t*	new_val;
+	const upd_field_t*	upd_field;
+	const dfield_t*		new_val;
 	ulint			old_len;
 	ulint			new_len;
 	ulint			n_fields;
@@ -449,12 +449,12 @@ row_upd_rec_in_place(
 	rec_t*		rec,	/* in/out: record where replaced */
 	dict_index_t*	index,	/* in: the index the record belongs to */
 	const ulint*	offsets,/* in: array returned by rec_get_offsets() */
-	upd_t*		update,	/* in: update vector */
+	const upd_t*	update,	/* in: update vector */
 	page_zip_des_t*	page_zip)/* in: compressed page with enough space
 				available, or NULL */
 {
-	upd_field_t*	upd_field;
-	dfield_t*	new_val;
+	const upd_field_t*	upd_field;
+	const dfield_t*		new_val;
 	ulint			n_fields;
 	ulint			i;
 
@@ -551,14 +551,15 @@ Writes to the redo log the new values of the fields occurring in the index. */
 void
 row_upd_index_write_log(
 /*====================*/
-	upd_t*	update,	/* in: update vector */
-	byte*	log_ptr,/* in: pointer to mlog buffer: must contain at least
-			MLOG_BUF_MARGIN bytes of free space; the buffer is
-			closed within this function */
+	const upd_t*	update,	/* in: update vector */
+	byte*		log_ptr,/* in: pointer to mlog buffer: must
+				contain at least MLOG_BUF_MARGIN bytes
+				of free space; the buffer is closed
+				within this function */
 	mtr_t*		mtr)	/* in: mtr into whose log to write */
 {
-	upd_field_t*	upd_field;
-	dfield_t*	new_val;
+	const upd_field_t*	upd_field;
+	const dfield_t*		new_val;
 	ulint			len;
 	ulint			n_fields;
 	byte*			buf_end;
@@ -808,7 +809,7 @@ row_upd_build_difference_binary(
 	const ulint*	ext_vec,/* in: array containing field numbers of
 				externally stored fields in entry, or NULL */
 	ulint		n_ext_vec,/* in: number of fields in ext_vec */
-	rec_t*		rec,	/* in: clustered index record */
+	const rec_t*	rec,	/* in: clustered index record */
 	trx_t*		trx,	/* in: transaction */
 	mem_heap_t*	heap)	/* in: memory heap from which allocated */
 {
@@ -888,7 +889,7 @@ row_upd_index_replace_new_col_vals_index_pos(
 	dtuple_t*	entry,	/* in/out: index entry where replaced */
 	dict_index_t*	index,	/* in: index; NOTE that this may also be a
 				non-clustered index */
-	upd_t*		update,	/* in: an update vector built for the index so
+	const upd_t*	update,	/* in: an update vector built for the index so
 				that the field number in an upd_field is the
 				index position */
 	ibool		order_only,
@@ -1049,12 +1050,12 @@ row_upd_changes_ord_field_binary(
 				an ordering field in the index record;
 				NOTE: the fields are compared as binary
 				strings */
-	dtuple_t*	row,	/* in: old value of row, or NULL if the
+	const dtuple_t*	row,	/* in: old value of row, or NULL if the
 				row and the data values in update are not
 				known when this function is called, e.g., at
 				compile time */
 	dict_index_t*	index,	/* in: index of the record */
-	upd_t*		update)	/* in: update vector for the row; NOTE: the
+	const upd_t*	update)	/* in: update vector for the row; NOTE: the
 				field numbers in this MUST be clustered index
 				positions! */
 {
@@ -1084,7 +1085,7 @@ row_upd_changes_ord_field_binary(
 
 		for (j = 0; j < n_upd_fields; j++) {
 
-			upd_field_t*	upd_field
+			const upd_field_t*	upd_field
 				= upd_get_nth_field(update, j);
 
 			/* Note that if the index field is a column prefix

trx/trx0rec.c

@@ -650,7 +650,7 @@ trx_undo_page_report_modify(
 	const rec_t*	rec,		/* in: clustered index record which
 					has NOT yet been modified */
 	const ulint*	offsets,	/* in: rec_get_offsets(rec, index) */
-	upd_t*		update,		/* in: update vector which tells the
+	const upd_t*	update,		/* in: update vector which tells the
 					columns to be updated; in the case of
 					a delete, this should be set to NULL */
 	ulint		cmpl_info,	/* in: compiler info on secondary
@@ -1223,7 +1223,7 @@ trx_undo_report_row_operation(
 	const dtuple_t*	clust_entry,	/* in: in the case of an insert,
 					index entry to insert into the
 					clustered index, otherwise NULL */
-	upd_t*		update,		/* in: in the case of an update,
+	const upd_t*	update,		/* in: in the case of an update,
 					the update vector, otherwise NULL */
 	ulint		cmpl_info,	/* in: compiler info on secondary
 					index updates */