Added Innobase to source distribution

innobase/include/row0upd.ic

@@ -0,0 +1,105 @@
+/******************************************************
+Update of a row
+
+(c) 1996 Innobase Oy
+
+Created 12/27/1996 Heikki Tuuri
+*******************************************************/
+
+#include "mtr0log.h"
+#include "trx0trx.h"
+#include "trx0undo.h"
+#include "row0row.h"
+#include "btr0sea.h"
+
+/*************************************************************************
+Creates an update vector object. */
+UNIV_INLINE
+upd_t*
+upd_create(
+/*=======*/
+				/* out, own: update vector object */
+	ulint		n,	/* in: number of fields */
+	mem_heap_t*	heap)	/* in: heap from which memory allocated */
+{
+	upd_t*	update;
+
+	update = mem_heap_alloc(heap, sizeof(upd_t));
+
+	update->info_bits = 0;
+	update->n_fields = n;
+	update->fields = mem_heap_alloc(heap, sizeof(upd_field_t) * n);
+
+	return(update);
+}
+
+/*************************************************************************
+Returns the number of fields in the update vector == number of columns
+to be updated by an update vector. */
+UNIV_INLINE
+ulint
+upd_get_n_fields(
+/*=============*/
+			/* out: number of fields */
+	upd_t*	update)	/* in: update vector */
+{
+	ut_ad(update);
+
+	return(update->n_fields);
+}
+
+/*************************************************************************
+Returns the nth field of an update vector. */
+UNIV_INLINE
+upd_field_t*
+upd_get_nth_field(
+/*==============*/
+			/* out: update vector field */
+	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);
+}
+
+/*************************************************************************
+Sets the clustered index field number to be updated by an update vector
+field. */
+UNIV_INLINE
+void
+upd_field_set_field_no(
+/*===================*/
+	upd_field_t*	upd_field,	/* in: update vector field */
+	ulint		field_no,	/* in: field number in a clustered
+					index */
+	dict_index_t*	index)		/* in: clustered index */
+{
+	ut_ad(index->type & DICT_CLUSTERED);
+	
+	upd_field->field_no = field_no;
+
+	dtype_copy(dfield_get_type(&(upd_field->new_val)),
+				dict_index_get_nth_type(index, field_no));
+}
+
+/*************************************************************************
+Updates the trx id and roll ptr field in a clustered index record when
+a row is updated or marked deleted. */
+UNIV_INLINE
+void
+row_upd_rec_sys_fields(
+/*===================*/
+	rec_t*		rec,	/* in: record */
+	dict_index_t*	index,	/* in: clustered index */
+	trx_t*		trx,	/* in: transaction */
+	dulint		roll_ptr)/* in: roll ptr of the undo log record */
+{
+	ut_ad(index->type & DICT_CLUSTERED);
+	ut_ad(!buf_block_align(rec)->is_hashed
+			|| rw_lock_own(&btr_search_latch, RW_LOCK_EX));
+
+	row_set_rec_trx_id(rec, index, trx->id);
+	row_set_rec_roll_ptr(rec, index, roll_ptr);
+}