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66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/******************************************************
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XtraBackup: hot backup tool for InnoDB
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(c) 2009-2012 Percona Inc.
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Originally Created 3/3/2009 Yasufumi Kinoshita
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Written by Alexey Kopytov, Aleksandr Kuzminsky, Stewart Smith, Vadim Tkachenko,
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Yasufumi Kinoshita, Ignacio Nin and Baron Schwartz.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*******************************************************/
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/* Data file read filter interface */
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#ifndef XB_READ_FILT_H
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#define XB_READ_FILT_H
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#include "changed_page_bitmap.h"
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typedef ulint space_id_t;
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struct xb_fil_cur_t;
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/* The read filter context */
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struct xb_read_filt_ctxt_t {
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ib_int64_t offset; /*!< current file offset */
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ib_int64_t data_file_size; /*!< data file size */
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size_t buffer_capacity;/*!< read buffer capacity */
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space_id_t space_id; /*!< space id */
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/* The following fields used only in bitmap filter */
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/* Move these to union if any other filters are added in future */
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xb_page_bitmap_range *bitmap_range; /*!< changed page bitmap range
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iterator for space_id */
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ulint page_size; /*!< page size */
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ulint filter_batch_end;/*!< the ending page id of the
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current changed page block in
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the bitmap */
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/** TODO: remove this default constructor */
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xb_read_filt_ctxt_t() : page_size(0) {}
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};
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/* The read filter */
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struct xb_read_filt_t {
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void (*init)(xb_read_filt_ctxt_t* ctxt,
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const xb_fil_cur_t* cursor,
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ulint space_id);
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void (*get_next_batch)(xb_read_filt_ctxt_t* ctxt,
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ib_int64_t* read_batch_start,
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ib_int64_t* read_batch_len);
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void (*deinit)(xb_read_filt_ctxt_t* ctxt);
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};
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extern xb_read_filt_t rf_pass_through;
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extern xb_read_filt_t rf_bitmap;
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#endif
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