~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems

 *  Copyright (C) 2010 Joseph Daly 

 *

 *  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 St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#ifndef DRIZZLED_STATISTICS_VARIABLES_H

#define DRIZZLED_STATISTICS_VARIABLES_H

namespace drizzled

{

extern struct global_counters current_global_counters;

/* 

 * These statistics are global and are not per session

 * they are not reset once initialized. 

 */

typedef struct global_counters

{

  uint64_t aborted_threads;

  uint64_t aborted_connects;

  uint64_t max_used_connections;

  uint64_t locks_immediate;

  uint64_t locks_waited;

} global_counters;

/* 

 * These statistics are per session and are reset at the end

 * of each session, after being copied into a global 

 * system_status_var

 */

typedef struct system_status_var

{

  uint64_t bytes_received;

  uint64_t bytes_sent;

  uint64_t com_other;

  uint64_t created_tmp_disk_tables;

  uint64_t created_tmp_tables;

  uint64_t ha_commit_count;

  uint64_t ha_delete_count;

  uint64_t ha_read_first_count;

  uint64_t ha_read_last_count;

  uint64_t ha_read_key_count;

  uint64_t ha_read_next_count;

  uint64_t ha_read_prev_count;

  uint64_t ha_read_rnd_count;

  uint64_t ha_read_rnd_next_count;

  uint64_t ha_rollback_count;

  uint64_t ha_update_count;

  uint64_t ha_write_count;

  uint64_t ha_prepare_count;

  uint64_t ha_savepoint_count;

  uint64_t ha_savepoint_rollback_count;

  /* KEY_CACHE parts. These are copies of the original */

  uint64_t key_blocks_changed;

  uint64_t key_blocks_used;

  uint64_t key_cache_r_requests;

  uint64_t key_cache_read;

  uint64_t key_cache_w_requests;

  uint64_t key_cache_write;

  /* END OF KEY_CACHE parts */

  uint64_t select_full_join_count;

  uint64_t select_full_range_join_count;

  uint64_t select_range_count;

  uint64_t select_range_check_count;

  uint64_t select_scan_count;

  uint64_t long_query_count;

  uint64_t filesort_merge_passes;

  uint64_t filesort_range_count;

  uint64_t filesort_rows;

  uint64_t filesort_scan_count;

  /*

    Number of statements sent from the client

  */

  uint64_t questions;

  /*

    IMPORTANT!

    SEE last_system_status_var DEFINITION BELOW.

    Below 'last_system_status_var' are all variables which doesn't make any

    sense to add to the /global/ status variable counter.

  */

  double last_query_cost;

} system_status_var;

#define last_system_status_var questions

} /* namespace drizzled */

#endif /* DRIZZLED_STATISTICS_VARIABLES_H */