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/******************************************************
XtraBackup: hot backup tool for InnoDB
(c) 2009-2012 Percona Inc.
Originally Created 3/3/2009 Yasufumi Kinoshita
Written by Alexey Kopytov, Aleksandr Kuzminsky, Stewart Smith, Vadim Tkachenko,
Yasufumi Kinoshita, Ignacio Nin and Baron Schwartz.
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 Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*******************************************************/
/* Data file read filter interface */
#ifndef XB_READ_FILT_H
#define XB_READ_FILT_H
#include "changed_page_bitmap.h"
typedef uint32_t space_id_t;
struct xb_fil_cur_t;
/* The read filter context */
struct xb_read_filt_ctxt_t {
ib_int64_t offset; /*!< current file offset */
ib_int64_t data_file_size; /*!< data file size */
size_t buffer_capacity;/*!< read buffer capacity */
space_id_t space_id; /*!< space id */
/* The following fields used only in bitmap filter */
/* Move these to union if any other filters are added in future */
xb_page_bitmap_range *bitmap_range; /*!< changed page bitmap range
iterator for space_id */
ulint page_size; /*!< page size */
ulint filter_batch_end;/*!< the ending page id of the
current changed page block in
the bitmap */
/** TODO: remove this default constructor */
xb_read_filt_ctxt_t() : page_size(0) {}
};
/* The read filter */
struct xb_read_filt_t {
void (*init)(xb_read_filt_ctxt_t* ctxt,
const xb_fil_cur_t* cursor,
ulint space_id);
void (*get_next_batch)(xb_read_filt_ctxt_t* ctxt,
ib_int64_t* read_batch_start,
ib_int64_t* read_batch_len);
void (*deinit)(xb_read_filt_ctxt_t* ctxt);
};
extern xb_read_filt_t rf_pass_through;
extern xb_read_filt_t rf_bitmap;
#endif
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