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    ut0mem.c Merge changes in InnoDB-3.23.43b · 1904897b
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    ut0ut.c 	Merge changes in InnoDB-3.23.43b
    trx0purge.c	Merge changes in InnoDB-3.23.43b
    trx0rec.c	Merge changes in InnoDB-3.23.43b
    trx0trx.c	Merge changes in InnoDB-3.23.43b
    trx0undo.c	Merge changes in InnoDB-3.23.43b
    thr0loc.c	Merge changes in InnoDB-3.23.43b
    sync0arr.c	Merge changes in InnoDB-3.23.43b
    sync0rw.c	Merge changes in InnoDB-3.23.43b
    sync0sync.c	Merge changes in InnoDB-3.23.43b
    srv0srv.c	Merge changes in InnoDB-3.23.43b
    srv0start.c	Merge changes in InnoDB-3.23.43b
    row0ins.c	Merge changes in InnoDB-3.23.43b
    row0mysql.c	Merge changes in InnoDB-3.23.43b
    row0purge.c	Merge changes in InnoDB-3.23.43b
    row0sel.c	Merge changes in InnoDB-3.23.43b
    row0umod.c	Merge changes in InnoDB-3.23.43b
    row0upd.c	Merge changes in InnoDB-3.23.43b
    row0vers.c	Merge changes in InnoDB-3.23.43b
    rem0cmp.c	Merge changes in InnoDB-3.23.43b
    que0que.c	Merge changes in InnoDB-3.23.43b
    pars0opt.c	Merge changes in InnoDB-3.23.43b
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    os0file.c	Merge changes in InnoDB-3.23.43b
    mtr0log.c	Merge changes in InnoDB-3.23.43b
    mem0pool.c	Merge changes in InnoDB-3.23.43b
    log0log.c	Merge changes in InnoDB-3.23.43b
    log0recv.c	Merge changes in InnoDB-3.23.43b
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    ibuf0ibuf.c	Merge changes in InnoDB-3.23.43b
    fil0fil.c	Merge changes in InnoDB-3.23.43b
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    dict0dict.c	Merge changes in InnoDB-3.23.43b
    dict0load.c	Merge changes in InnoDB-3.23.43b
    dict0mem.c	Merge changes in InnoDB-3.23.43b
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    btr0cur.c	Merge changes in InnoDB-3.23.43b
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    btr0sea.c	Merge changes in InnoDB-3.23.43b
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    srv0srv.h	Merge changes in InnoDB-3.23.43b
    sync0arr.h	Merge changes in InnoDB-3.23.43b
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    sync0sync.h	Merge changes in InnoDB-3.23.43b
    trx0trx.h	Merge changes in InnoDB-3.23.43b
    ut0mem.h	Merge changes in InnoDB-3.23.43b
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    db0err.h	Merge changes in InnoDB-3.23.43b
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    log0log.h	Merge changes in InnoDB-3.23.43b
    mtr0mtr.h	Merge changes in InnoDB-3.23.43b
    rem0cmp.h	Merge changes in InnoDB-3.23.43b
    row0ins.h	Merge changes in InnoDB-3.23.43b
    row0mysql.h	Merge changes in InnoDB-3.23.43b
    btr0cur.h	Merge changes in InnoDB-3.23.43b
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    btr0sea.h	Merge changes in InnoDB-3.23.43b
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    sql_table.cc	Merge changes in InnoDB-3.23.43b
    sql_db.cc	Merge changes in InnoDB-3.23.43b
    ha_innobase.cc	Merge changes in InnoDB-3.23.43b
    handler.cc	Merge changes in InnoDB-3.23.43b
    ha_innobase.h	Merge changes in InnoDB-3.23.43b
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    innobase/include/mtr0mtr.h:
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    innobase/include/rem0cmp.h:
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    innobase/include/row0ins.h:
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    innobase/include/row0mysql.h:
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    innobase/include/row0upd.h:
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    innobase/include/srv0srv.h:
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    innobase/include/sync0arr.h:
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    innobase/include/sync0rw.h:
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    innobase/include/sync0sync.h:
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    innobase/include/trx0trx.h:
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    innobase/include/btr0pcur.ic:
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    innobase/log/log0log.c:
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    innobase/log/log0recv.c:
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    innobase/mem/mem0pool.c:
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    innobase/mtr/mtr0log.c:
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    innobase/row/row0ins.c:
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    innobase/row/row0mysql.c:
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    innobase/row/row0purge.c:
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    innobase/row/row0umod.c:
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    innobase/row/row0upd.c:
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    innobase/row/row0vers.c:
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    innobase/trx/trx0rec.c:
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    innobase/trx/trx0trx.c:
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    innobase/trx/trx0undo.c:
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    innobase/ut/ut0mem.c:
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    innobase/ut/ut0ut.c:
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    BitKeeper/etc/logging_ok:
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    1904897b
row0upd.ic 2.97 KB
/******************************************************
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;
	ulint	i;

	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);

	for (i = 0; i < n; i++) {
		update->fields[i].extern_storage = 0;
	}
	
	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 an 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: index */
{	
	upd_field->field_no = field_no;

	if (field_no >= dict_index_get_n_fields(index)) {
		fprintf(stderr,
		"InnoDB: Error: trying to access field %lu in table %s\n"
		"InnoDB: index %s, but index has only %lu fields\n",
		field_no, index->table_name, index->name,
		dict_index_get_n_fields(index));
	}

	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);
}