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92f87f2cf0
The innodb_changed_pages plugin only was part of XtraDB, never InnoDB. It would be useful for incremental backups. We will remove the code from mariadb-backup for now, because it cannot serve any useful purpose until the server part has been implemented.
73 lines
2.4 KiB
C++
73 lines
2.4 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 implementation */
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#include "read_filt.h"
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#include "common.h"
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#include "fil_cur.h"
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#include "xtrabackup.h"
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/****************************************************************//**
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Perform read filter context initialization that is common to all read
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filters. */
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static
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void
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rf_pass_through_init(
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xb_read_filt_ctxt_t* ctxt, /*!<in/out: read filter context */
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const xb_fil_cur_t* cursor) /*!<in: file cursor */
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{
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ctxt->offset = 0;
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ctxt->data_file_size = cursor->statinfo.st_size;
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ctxt->buffer_capacity = cursor->buf_size;
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}
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/****************************************************************//**
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Get the next batch of pages for the pass-through read filter. */
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static
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void
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rf_pass_through_get_next_batch(
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/*===========================*/
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xb_read_filt_ctxt_t* ctxt, /*!<in/out: read filter
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context */
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int64_t* read_batch_start, /*!<out: starting read
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offset in bytes for the
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next batch of pages */
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int64_t* read_batch_len) /*!<out: length in
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bytes of the next batch
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of pages */
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{
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*read_batch_start = ctxt->offset;
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*read_batch_len = ctxt->data_file_size - ctxt->offset;
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if (*read_batch_len > (int64_t)ctxt->buffer_capacity) {
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*read_batch_len = ctxt->buffer_capacity;
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}
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ctxt->offset += *read_batch_len;
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}
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/* The pass-through read filter */
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xb_read_filt_t rf_pass_through = {
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&rf_pass_through_init,
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&rf_pass_through_get_next_batch,
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};
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