diff options
Diffstat (limited to 'storage/xtradb/trx/trx0undo.c')
| -rw-r--r-- | storage/xtradb/trx/trx0undo.c | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/storage/xtradb/trx/trx0undo.c b/storage/xtradb/trx/trx0undo.c index dae0637f72c..3d794c69c8b 100644 --- a/storage/xtradb/trx/trx0undo.c +++ b/storage/xtradb/trx/trx0undo.c @@ -1,6 +1,6 @@ /***************************************************************************** -Copyright (c) 1996, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 1996, 2012, 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 @@ -11,8 +11,8 @@ 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 +this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA *****************************************************************************/ @@ -876,9 +876,9 @@ trx_undo_discard_latest_update_undo( #ifndef UNIV_HOTBACKUP /********************************************************************//** Tries to add a page to the undo log segment where the undo log is placed. -@return page number if success, else FIL_NULL */ +@return X-latched block if success, else NULL */ UNIV_INTERN -ulint +buf_block_t* trx_undo_add_page( /*==============*/ trx_t* trx, /*!< in: transaction */ @@ -888,11 +888,10 @@ trx_undo_add_page( the rollback segment mutex */ { page_t* header_page; + buf_block_t* new_block; page_t* new_page; trx_rseg_t* rseg; - ulint page_no; ulint n_reserved; - ibool success; ut_ad(mutex_own(&(trx->undo_mutex))); ut_ad(!mutex_own(&kernel_mutex)); @@ -902,37 +901,37 @@ trx_undo_add_page( if (rseg->curr_size == rseg->max_size) { - return(FIL_NULL); + return(NULL); } header_page = trx_undo_page_get(undo->space, undo->zip_size, undo->hdr_page_no, mtr); - success = fsp_reserve_free_extents(&n_reserved, undo->space, 1, - FSP_UNDO, mtr); - if (!success) { + if (!fsp_reserve_free_extents(&n_reserved, undo->space, 1, + FSP_UNDO, mtr)) { - return(FIL_NULL); + return(NULL); } - page_no = fseg_alloc_free_page_general(header_page + TRX_UNDO_SEG_HDR - + TRX_UNDO_FSEG_HEADER, - undo->top_page_no + 1, FSP_UP, - TRUE, mtr); + new_block = fseg_alloc_free_page_general( + TRX_UNDO_SEG_HDR + TRX_UNDO_FSEG_HEADER + + header_page, + undo->top_page_no + 1, FSP_UP, TRUE, mtr, mtr); fil_space_release_free_extents(undo->space, n_reserved); - if (page_no == FIL_NULL) { + if (new_block == NULL) { /* No space left */ - return(FIL_NULL); + return(NULL); } - undo->last_page_no = page_no; + ut_ad(rw_lock_get_x_lock_count(&new_block->lock) == 1); + buf_block_dbg_add_level(new_block, SYNC_TRX_UNDO_PAGE); + undo->last_page_no = buf_block_get_page_no(new_block); - new_page = trx_undo_page_get(undo->space, undo->zip_size, - page_no, mtr); + new_page = buf_block_get_frame(new_block); trx_undo_page_init(new_page, undo->type, mtr); @@ -941,7 +940,7 @@ trx_undo_add_page( undo->size++; rseg->curr_size++; - return(page_no); + return(new_block); } /********************************************************************//** |