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/*
Copyright (c) 2015 MariaDB Corporation Ab
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifdef USE_PRAGMA_IMPLEMENTATION
#pragma implementation // gcc: Class implementation
#endif
#include <my_global.h>
#include "sql_priv.h"
#include "sql_select.h"
#include "my_json_writer.h"
void Filesort_tracker::print_json_members(Json_writer *writer)
{
const char *varied_str= "(varied across executions)";
writer->add_member("r_loops").add_ll(r_loops);
if (r_limit != HA_POS_ERROR)
{
writer->add_member("r_limit");
if (r_limit == 0)
writer->add_str(varied_str);
else
writer->add_ll(rint(r_limit/r_loops));
}
writer->add_member("r_used_priority_queue");
if (r_used_pq == r_loops)
writer->add_bool(true);
else if (r_used_pq == 0)
writer->add_bool(false);
else
writer->add_str(varied_str);
writer->add_member("r_output_rows").add_ll(rint(r_output_rows / r_loops));
if (sort_passes)
writer->add_member("r_sort_passes").add_ll(rint(sort_passes / r_loops));
if (sort_buffer_size != 0)
{
writer->add_member("r_buffer_size");
if (sort_buffer_size == ulonglong(-1))
writer->add_str(varied_str);
else
writer->add_size(sort_buffer_size);
}
}
/*
Report that we are doing a filesort.
@return
Tracker object to be used with filesort
*/
Filesort_tracker *Sort_and_group_tracker::report_sorting()
{
DBUG_ASSERT(cur_action < MAX_QEP_ACTIONS);
if (total_actions)
{
/* This is not the first execution. Check */
if (qep_actions[cur_action] != EXPL_ACTION_FILESORT)
{
varied_executions= true;
cur_action++;
if (!dummy_fsort_tracker)
dummy_fsort_tracker= new (current_thd->mem_root) Filesort_tracker();
return dummy_fsort_tracker;
}
return qep_actions_data[cur_action++].filesort_tracker;
}
Filesort_tracker *fs_tracker= new(current_thd->mem_root)Filesort_tracker();
qep_actions_data[cur_action].filesort_tracker= fs_tracker;
qep_actions[cur_action++]= EXPL_ACTION_FILESORT;
return fs_tracker;
}
void Sort_and_group_tracker::report_tmp_table(TABLE *tbl)
{
DBUG_ASSERT(cur_action < MAX_QEP_ACTIONS);
if (total_actions)
{
/* This is not the first execution. Check if the steps match. */
// todo: should also check that tmp.table kinds are the same.
if (qep_actions[cur_action] != EXPL_ACTION_TEMPTABLE)
varied_executions= true;
}
if (!varied_executions)
{
qep_actions[cur_action]= EXPL_ACTION_TEMPTABLE;
// qep_actions_data[cur_action]= ....
}
cur_action++;
}
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