diff options
Diffstat (limited to 'storage/innobase/include/buf0rea.h')
| -rw-r--r-- | storage/innobase/include/buf0rea.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/storage/innobase/include/buf0rea.h b/storage/innobase/include/buf0rea.h index cd5eff66ee8..b98ff121209 100644 --- a/storage/innobase/include/buf0rea.h +++ b/storage/innobase/include/buf0rea.h @@ -1,6 +1,6 @@ /***************************************************************************** -Copyright (c) 1995, 2009, Innobase Oy. All Rights Reserved. +Copyright (c) 1995, 2009, 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 *****************************************************************************/ @@ -43,6 +43,18 @@ buf_read_page( ulint zip_size,/*!< in: compressed page size in bytes, or 0 */ ulint offset);/*!< in: page number */ /********************************************************************//** +High-level function which reads a page asynchronously from a file to the +buffer buf_pool if it is not already there. Sets the io_fix flag and sets +an exclusive lock on the buffer frame. The flag is cleared and the x-lock +released by the i/o-handler thread. +@return TRUE if page has been read in, FALSE in case of failure */ +UNIV_INTERN +ibool +buf_read_page_async( +/*================*/ + ulint space, /*!< in: space id */ + ulint offset);/*!< in: page number */ +/********************************************************************//** Applies a random read-ahead in buf_pool if there are at least a threshold value of accessed pages from the random read-ahead area. Does not read any page, not even the one at the position (space, offset), if the read-ahead @@ -157,6 +169,9 @@ invoked */ #define BUF_READ_IBUF_PAGES_ONLY 131 /** read any page */ #define BUF_READ_ANY_PAGE 132 +/** read any page, but ignore (return an error) if a page does not exist +instead of crashing like BUF_READ_ANY_PAGE does */ +#define BUF_READ_IGNORE_NONEXISTENT_PAGES 1024 /* @} */ #endif |