92 lines
3.6 KiB
C++
92 lines
3.6 KiB
C++
/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <sys/types.h>
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#include "my_dbug.h"
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#include "my_inttypes.h"
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#include "storage/myisam/myisamdef.h"
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#include "storage/myisammrg/myrg_def.h"
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ulonglong myrg_position(MYRG_INFO *info) {
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MYRG_TABLE *current_table;
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if (!(current_table = info->current_table) &&
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info->open_tables != info->end_table)
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current_table = info->open_tables;
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return current_table
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? current_table->table->lastpos + current_table->file_offset
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: ~(ulonglong)0;
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}
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int myrg_status(MYRG_INFO *info, MYMERGE_INFO *x, int flag) {
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MYRG_TABLE *current_table;
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DBUG_TRACE;
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if (!(current_table = info->current_table) &&
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info->open_tables != info->end_table)
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current_table = info->open_tables;
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x->recpos = info->current_table ? info->current_table->table->lastpos +
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info->current_table->file_offset
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: (ulong)-1L;
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if (flag != HA_STATUS_POS) {
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MYRG_TABLE *file;
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info->records = info->del = info->data_file_length = 0;
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for (file = info->open_tables; file != info->end_table; file++) {
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file->file_offset = info->data_file_length;
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info->data_file_length += file->table->s->state.state.data_file_length;
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info->records += file->table->s->state.state.records;
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info->del += file->table->s->state.state.del;
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DBUG_PRINT("info2", ("table: %s, offset: %lu", file->table->filename,
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(ulong)file->file_offset));
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}
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x->records = info->records;
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x->deleted = info->del;
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x->data_file_length = info->data_file_length;
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x->reclength = info->reclength;
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x->options = info->options;
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if (current_table) {
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/*
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errkey is set to the index number of the myisam tables. But
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since the MERGE table can have less keys than the MyISAM
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tables, errkey cannot be be used as an index into the key_info
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on the server. This value will be overwritten with MAX_KEY by
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the MERGE engine.
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*/
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x->errkey = current_table->table->errkey;
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/*
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Calculate the position of the duplicate key to be the sum of the
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offset of the myisam file and the offset into the file at which
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the duplicate key is located.
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*/
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x->dupp_key_pos =
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current_table->file_offset + current_table->table->dupp_key_pos;
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} else {
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x->errkey = 0;
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x->dupp_key_pos = 0;
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}
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x->rec_per_key = info->rec_per_key_part;
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}
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return 0;
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}
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