diff options
Diffstat (limited to 'storage/innodb_plugin/include/row0row.ic')
| -rw-r--r-- | storage/innodb_plugin/include/row0row.ic | 45 |
1 files changed, 36 insertions, 9 deletions
diff --git a/storage/innodb_plugin/include/row0row.ic b/storage/innodb_plugin/include/row0row.ic index 05c007641af..0b9ca982af8 100644 --- a/storage/innodb_plugin/include/row0row.ic +++ b/storage/innodb_plugin/include/row0row.ic @@ -1,6 +1,6 @@ /***************************************************************************** -Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 1996, 2011, Oracle and/or its affiliates. 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 @@ -28,15 +28,42 @@ Created 4/20/1996 Heikki Tuuri #include "trx0undo.h" /*********************************************************************//** +Gets the offset of the DB_TRX_ID field, in bytes relative to the origin of +a clustered index record. +@return offset of DATA_TRX_ID */ +UNIV_INLINE +ulint +row_get_trx_id_offset( +/*==================*/ + const dict_index_t* index, /*!< in: clustered index */ + const ulint* offsets)/*!< in: record offsets */ +{ + ulint pos; + ulint offset; + ulint len; + + ut_ad(dict_index_is_clust(index)); + ut_ad(rec_offs_validate(NULL, index, offsets)); + + pos = dict_index_get_sys_col_pos(index, DATA_TRX_ID); + + offset = rec_get_nth_field_offs(offsets, pos, &len); + + ut_ad(len == DATA_TRX_ID_LEN); + + return(offset); +} + +/*********************************************************************//** Reads the trx id field from a clustered index record. @return value of the field */ UNIV_INLINE trx_id_t row_get_rec_trx_id( /*===============*/ - const rec_t* rec, /*!< in: record */ - dict_index_t* index, /*!< in: clustered index */ - const ulint* offsets)/*!< in: rec_get_offsets(rec, index) */ + const rec_t* rec, /*!< in: record */ + const dict_index_t* index, /*!< in: clustered index */ + const ulint* offsets)/*!< in: rec_get_offsets(rec, index) */ { ulint offset; @@ -46,7 +73,7 @@ row_get_rec_trx_id( offset = index->trx_id_offset; if (!offset) { - offset = row_get_trx_id_offset(rec, index, offsets); + offset = row_get_trx_id_offset(index, offsets); } return(trx_read_trx_id(rec + offset)); @@ -59,9 +86,9 @@ UNIV_INLINE roll_ptr_t row_get_rec_roll_ptr( /*=================*/ - const rec_t* rec, /*!< in: record */ - dict_index_t* index, /*!< in: clustered index */ - const ulint* offsets)/*!< in: rec_get_offsets(rec, index) */ + const rec_t* rec, /*!< in: record */ + const dict_index_t* index, /*!< in: clustered index */ + const ulint* offsets)/*!< in: rec_get_offsets(rec, index) */ { ulint offset; @@ -71,7 +98,7 @@ row_get_rec_roll_ptr( offset = index->trx_id_offset; if (!offset) { - offset = row_get_trx_id_offset(rec, index, offsets); + offset = row_get_trx_id_offset(index, offsets); } return(trx_read_roll_ptr(rec + offset + DATA_TRX_ID_LEN)); |